# Guide
Advice and answers from the Base.meme team
## 1. Getting Started on Base.meme
* [Learn the basics to get yourself started on Base.meme](/getting-started)
## 2. Using Base.meme
* [How to create and manage your coins on Base.meme?](https://github.com/freeedevs/basememe-docs/blob/main/using-base.meme)
## 3. Account
* [Learn about account on Base.meme](#id-3.-account)
## 4. Vaults
* [Tax-token vault strategies (SnowBall, BurnDividend, Gift, Split)](/vaults)
## 5. Fees & Rewards
* [Learn more about how fees and rewards work on Base.meme, including the Tax Token](/fees-rewards)
## 6. For Developers
* [Learn more about the implementation on Base.meme (V4 + Tax factory)](/for-developers)
## 7. Legal
* [Read our terms and conditions](/legal)
# Getting Started
Base.meme is a streamlined, low-cost pathway to introduce even more meme tokens into the world. Create anything. Any meme you want to put out into the Base ecosystem. We’re here to be your canvas and your logistical minion. We’ll help you get the most traction possible with users. All we’re asking is you create the best viral memes that can potentially make you famous.
This guide will help you get started with Base.meme and answer some of the most common questions we get from new users.
## 1. Fair Launch
[A guide on how to participate in the fair launch](/getting-started/fair-launch).
## 2. Start here!
[A guide on how to connect your wallet to Base.meme](/getting-started/connect-wallet).
## 3. How to Create and Trade on Base.meme
[A guide on how to create and trade on Base.meme](/getting-started/create-and-trade).
## 4. How do I earn on Base.meme?
[How do I earn on Base.meme?](/getting-started/earn)
## 5. Gas Fees
[What is gas and why do we need to pay it?](/getting-started/gas-fees)
# Fair Launch
Base.meme is a cutting-edge platform designed for memecoin creators and traders, streamlining the token creation and trading process. With just a small amount of gas, users can launch a new token by simply entering a name and uploading an image—no coding or complex setup required.
Tokens follow a pricing curve, allowing users to buy and sell seamlessly in a fair and transparent market. Once a token reaches its funding target (Bonding Curve completion), Base.meme automatically injects liquidity into Uniswap V4 for coins created on or after December 5, 2025 whereas for coins created before December 5, 2025 will be migrated to Uniswap V3. Both pool type will be permanently lock to ensuring safety and long-term liquidity.
Base.meme supports two creation modes:
1. **Standard mode**: uses the platform defaults (fixed supply and default allocations).
2. **Advanced mode**: lets creators customize the **funding target** (`Raised`) and token allocation for **Bonding Curve** and **Vesting**. **Pool Migration** allocation remains fixed at 20%. Additionally, create is able to assign a recipient for vested token and claim it gradually over time after graduation. These parameters are fixed once the coin is created.
**On Base.meme, creators can earn rewards both during the Bonding Curve phase and from trading activity on DEX platforms.** This provides ongoing incentives for creators throughout the token's lifecycle. For detailed information about the reward mechanisms and how to claim them, please refer to the [rewards section](/fees-rewards/rewards-on-base-meme).
Base.meme implement a two-phase process for every token launch:
1. **Bonding Curve Phase (Token Sale)**
2. **Liquidity Pool (LP) Phase (DEX Trading)**
***
## How it Works: Step by Step
### Phase 1: Bonding Curve (Token Sale Mechanism)
Base.meme’s token pricing system is built on a bonding curve, ensuring a gradual and predictable price increase as more tokens are purchased. Each token launched on the platform follows a fixed total supply of 1,000,000,000 tokens, all adhering to the same economic model.
* **Standard mode token allocation:**
* Total token supply = 1,000,000,000 (1 billion)
* 80% of tokens (800 million) are allocated to sell through the bonding curve phase
* 20% of tokens (200 million) are reserved for liquidity pools
* **Advanced mode**\
The funding target and token allocations may differ from the defaults (while Pool Migration remains fixed at 20%). Creator decide their desire allocation during token creation and not changeable afterward.
Through the bonding curve mechanism, users can mint tokens at a fair, market-driven price. The price is determined by a mathematical formula, not arbitrary listings, ensuring transparency and fairness for all participants.
To complete this phase, a certain amount of collateral (Base ETH / USDC / SOL) is required to reach the coin’s funding target. Once the target is reached, the process moves to the next phase.
### Phase 2: Liquidity Pool (LP Creation)
Once the bonding curve phase is completed, the remaining tokens and accumulated collateral are used to establish a liquidity pool (LP), enabling seamless trading while ensuring price stability and long-term liquidity. In **Standard mode**, after 80% of the tokens are sold, the remaining 20% (200M tokens) are used to create an LP on Uniswap. In **Advanced mode**, the exact amounts depend on the coin’s configuration.
* The collected collateral (after deducting platform and network fees) is paired with the remaining 200M tokens to create the initial liquidity pool.
* The final LP consists of the paired assets, allowing open-market trading on Uniswap.
* Once in the LP, token price follows a constant product formula, with supply and demand determining price movements.
* At this stage, the token is now traded on Uniswap.
***
## Why Choose Bonding Curve Fair Launch?
* **No pre-sale, no insiders, no team reserves:** Truly community-driven.
* **Market-driven pricing:** Prevents manipulation and dumping risks.
* **Permanently locked liquidity:** Eliminates rug pull risks.
* **Low entry barrier:** Anyone can launch a token with a single click.
***
## Summary
Base.meme ensures a transparent, fair, and decentralized launch process for every new token. By leveraging the bonding curve and automated liquidity injection, it provides a level playing field for all participants and long-term security for every project.
# Connect Wallet
How to create your account with email/socials or connect a Web3 wallet on Base.meme.
Before you start on Base.meme, you'll need to have an wallet account either by connecting a crypto wallet or login with email or social where associated wallet account will be created automatically.
You can follow these steps to create your Base.meme account with a self-custodial crypto wallet using your email or social accounts. The email login experience is powered by a third-party partner, Privy.
If you're looking to bring your existing crypto wallet to log in, learn more in the [Use a Web3 wallet](#use-a-web3-wallet) section below.
## Create your account with email or social
1. Navigate to Base.meme.
2. Click **Login** in the upper right corner of the site.
3. Choose "**Login with email or socials**" to create an account using an email address or social account (Google, X, or Farcaster).
Login with email or socials
4. **For email**: Input your email address and enter the verification code sent to your email. **For social accounts**: Complete the authorization with Google or X.
Choose your log in or sign up method
5. After login, an embedded wallet will be created for you inside Base.meme (powered by Privy).
⚠️ **Important**: This email address or social account is tied to your account. If you lose access to your login method, you will lose access to your wallet, so be sure to keep your login information accessible and secure.
In the future, when you visit Base.meme, you'll need to sign in using the same email address or social account. Any item you purchase will be tied to this specific account, so you'll need to be signed in to see your items.
You can link multiple sign-in methods to the same account. Any of them will take you back to the same account and wallet.
> **When you log into Base.meme with an email, Base.meme doesn't have control over your items or funds. Instead, you control your wallet!**
>
> For your security, Base.meme will never have access to your private key, which means we aren't able to access your wallet on your behalf. The private key is what gives only you access to your items and funds, so it's important to never share it with anyone.
## Use a Web3 wallet
Base.meme currently supports wallets such as [Metamask](https://metamask.io/), [Rainbow](https://rainbow.me/), [Coinbase Wallet](https://wallet.coinbase.com/) and any [WalletConnect-compatible wallet](https://explorer.walletconnect.com/?type=wallet). Once your wallet is ready to connect, you can do this via the Base.meme homepage.
1. Click **Connect** at the upper right of the page.
2. Select "**Connect Wallet**".
3. You can choose your provider and follow the instructions in your wallet.
4. Your wallet will require you to "**Sign**" a signature request. This permits your wallet to connect to Base.meme and secure your account. This step is similar to a password, as Base.meme verifies you are the owner of the wallet you're connecting.
**🎉 Your account has now been connected with Base.meme! 🎉**
## Connecting your wallet to Base.meme for the first time?
If this is your first time connecting your wallet to Base.meme. You can add some basic details and select your notification preferences. Continue with our guide below:
1. Add your **profile picture**.\
\&#xNAN;***Please note that the file cannot exceed 2 MB.***
2. You can choose your **username**. This is a unique, personalized identifier you can choose to represent your profile.
* Username requirements are:
* Minimum 3 characters
* Maximum 38 characters
* No special characters, spaces or symbols
3. Enter your **display name**. It is purely aesthetic and can be anything from a pseudonym to your real name or even just the same as your username.
4. Add a **bio** to your page and tell us a bit about yourself.
***Max 250 character limit***
5. Toggle your notification settings.
***These can be changed and updated anytime in your profile settings.***
6. Select "Finish"
**🎉 Your profile and wallet are now complete! 🎉**\
You are ready to create, trade and enjoy on Base.meme. To learn how to create a coin on Base.meme, follow our guide here.
***
Need help connecting your wallet? Contact us here through our help centre or join our [DISCORD](https://discord.gg/basememe) for further assistance.
# Earn
Base.meme’s mission is to make tokenizing and trading coins easy, fun, and rewarding.
Our Rewards enable creators and developers on Base.meme to earn from trading activity through two distinct reward systems: Trade Rewards and Market Rewards.
These are the following ways you can earn rewards on Base.meme:
* **Create**: You automatically receive this reward whenever someone trades (buys or sells) your coin on Base.meme.
* **Refer**: Earn rewards when someone trades through a link you shared.
* **Invite**: This reward is earned on each trade by those who have invited users to Base.meme.
You can check out our in-depth article on earning rewards on Base.meme here: [Understanding Rewards on Base.meme](/fees-rewards/rewards-on-base-meme).
# Gas Fees
What is gas and why do we need to pay it?
## Why do I pay gas?
Base.meme is a portal that creates blockchain transactions to create, buy & sell tokens using your connected wallet. Your wallet is used to pay the gas fee in the native currency of the respective chain, which is ETH on Base Chain.
## What is gas?
Gas is essential to blockchain networks. It is the fuel that allows them to operate in the same way that a car needs gasoline to run. Gas is a fee required to successfully conduct a transaction on the blockchain and keeps the network secure.
## Do gas fees go to Base.meme?
No, gas fees do not go to Base.meme.
## Why does gas change?
Gas fluctuates with increased/decreased demand and the price of the native token. Due to gas price fluctuation, the cost of transactions will differ depending on the transaction type and token price. When the networks are experiencing a high volume of transactions, the fee will be higher. Users can wait for the gas price to come down or submit a price they are willing to pay and wait for the transaction to be confirmed; however, if the gas price limit is too low, validators can ignore such transactions.
# Create & Trade
Every coin (ERC-20 token) on Base.meme is instantly trade-able from the moment it goes live. Every one have equal access to buy and sell at any time. Whether you're supporting your favorite creator, enjoying creating, or trading meme on Base.meme has never been easier.
## Create Your First Coin
**Quick creation steps:**
1. Click the + button on the left-hand side of the screen to open the create modal.
2. Add your coin name and ticker symbol.
3. Upload your image or video file (JPG, PNG, GIF, MP4. Max size: 2GB).
4. Write a description (optional).
5. Add social links (optional).
6. Select a Payment Token to pair with your token. Available options: ETH, USDC, and SOL.
7. Optionally purchase some of your own tokens to protect against snipers.
8. Click Create Coin.
🎉 **Created!** 🎉 Your coin is now live and ready to trade!
## Basic Trading
Begin by setting up all the necessary information for your meme token. This includes defining the token name, symbol, and other key details. Base.meme launchpad provides a user-friendly interface to help you configure these settings efficiently.
### Buying Coins
1. Navigate to the coin you want to buy
2. Select the "Buy" option
3. Enter a custom amount or select from preset amounts
**Reminder**: Review the “You’ll receive” amount before continuing
4. Select "Place Trade" to confirm your purchase
5. Your new balance will update automatically once the transaction is confirmed
### Selling Coins
1. Navigate to the coin you want to sell
2. Select the "Sell" option
3. Enter a custom amount or select from preset percentages (25%, 50%, 75%, or 100%)\
**Reminder**: Review the “You’ll receive” amount before continuing.
4. Select "Place Trade" to confirm your sale
5. Your balance will update automatically once the transaction is confirmed
## Next Steps
* [Explore](/using-base.meme/explore) other creators and their content
* Learn about [fees and rewards](/fees-rewards)
* [Edit your profile](/account/edit-profile) to personalize your account
> **Want to learn more about trading?** Check out our [comprehensive trading guide](/using-base.meme/trade) for advanced strategies and tips.
## Need Help?
If you need more help, don't hesitate to contact us via X (formerly Twitter) and Discord.
**Legal disclaimer**: Coins are ERC-20 representations of user creation on Base.meme and are for entertainment and social engagement purposes only.
# Using Base.meme
How to create and manage your coins on Base.meme.
## Creating on Base.meme
[Creation guide (Standard vs Advanced)](/using-base.meme/detailed-creation)
* [Standard mode creation](/using-base.meme/detailed-creation/standard-creation)
* [Advanced mode creation](/using-base.meme/detailed-creation/advanced-creation)
## Explore on Base.meme
[How to explore on Base.meme?](/using-base.meme/explore)
## Trading on Base.meme
[How to trade on Base.meme?](/using-base.meme/trade)
# Creation Guide
Base.meme supports two creation modes:
* **Standard mode**: a simple one-step flow using platform defaults.
* **Advanced mode**: a two-step flow that lets you customize `Raised` (funding target) and token distribution, including an optional vesting allocation to lock tokens and release them over time after graduation.
> **New to Base.meme?** Check out our [quick start guide](/getting-started/create-and-trade) for a simplified creation process.
## Getting started
1. Ensure you are logged in to Base.meme.
2. Click the **Create** button to open the create page.
## Choose Your Mode
* [Standard mode creation](/using-base.meme/detailed-creation/standard-creation)
* [Advanced mode creation](/using-base.meme/detailed-creation/advanced-creation)
## Next Steps
* Learn about [trading your coins](/using-base.meme/trade)
* Explore [advanced trading strategies](/using-base.meme/trade#advanced-trading-tips)
* Check out the [explore page](/using-base.meme/explore) to discover other creators
# Standard Mode Creation
Standard mode is the default, simplest way to create a coin on Base.meme. It uses the platform defaults for funding target and token distribution.
## Step-by-step guide
1. Keep **Standard** selected.
2. Fill in the coin details (see field reference below).
3. Select a **Payment Token** (ETH / USDC / SOL).
4. Configure **Tax** settings (optional).
5. **Initial token purchase** (optional)
* You have the opportunity to purchase a portion of the token supply in the same transaction to help protect your launch from snipers.
6. When you're finished, click **Create Coin** and approve the transaction prompt from your wallet.
Note: Coin details can’t be changed or edited after creation, choose carefully.
Your coin is now live once creation completes. After your upload has been processed, your coin will be ready to trade and share with your community.
## Field reference
### Coin Name
The name of your coin as displayed across Base.meme.
### Ticker Symbol
Your coin’s ticker (for example, `PEPE`). This is used to identify your coin when trading.
### Description (optional)
A short description of the coin. This is shown on the coin page and helps traders understand what the coin is about.
### Social links (optional)
Links to your project’s social accounts (for example X / Telegram / Website). These appear on the coin page to help your community find the official channels.
### Media
Upload a cover image or video for your coin.
* Supported formats: JPG, PNG, GIF, MP4
* Max size: 2GB
### Payment Token
The token used as the backing currency during the Bonding Curve phase (for example ETH, USDC, or SOL). It also determines the denomination shown for fees and rewards.
### Tax Configuration (optional)
Configure a token tax that is charged on every transfer and trade. Tax is optional — setting the rate to 0% disables it.
* **Tax Rate**: The percentage charged on each transfer and trade (default 0%).
* **Distribution Split**: Allocate the collected tax across four channels:
* **Funds Recipient** — direct revenue to a designated wallet (or to a Vault, see below).
* **Holder Dividend** — proportional distribution to all token holders.
* **Token Burn** — buyback and burn to reduce circulating supply.
* **Add to Liquidity** — routes tax back into the Uniswap V2 liquidity pool.
* **Funds Recipient Address**: The wallet that receives the Funds Recipient share. Defaults to the creator wallet.
Tax parameters are fixed at creation and cannot be changed afterward. For full details, see the [Tax Token](/fees-rewards/tax-token) page.
### Vault Type (optional)
When Tax is enabled, you can optionally select a **Vault** in place of the Funds Recipient address. The Vault is a strategy contract that automatically manages the tax revenue routed to the Funds Recipient channel. The available Vault types are:
* **SnowBall** — All tax revenue is used for continuous buyback & burn, creating pure deflation. [Learn more](/vaults/snowball)
* **BurnDividend** — Starts with buyback & burn, then transitions to a dividend model when the first holder burns tokens. Burners earn a proportional share of future tax revenue. [Learn more](/vaults/burndividend)
* **Gift** — A designated X (Twitter) account controls where tax revenue goes. Requires posting a management tweet at least once every 7 days; otherwise falls back to buyback & burn. [Learn more](/vaults/gift)
* **Split** — Tax revenue is automatically distributed among up to 10 recipients based on pre-configured percentage shares. [Learn more](/vaults/splitvault)
Vault selection requires **ETH** as the payment token. The Vault type is fixed at creation and cannot be changed afterward. For a full overview, see the [Vaults](/vaults) page.
### Initial token purchase (optional)
If available in your flow, you can optionally buy a portion of the supply in the same transaction to help protect the launch from snipers.
# Advanced Mode Creation
Advanced mode is a two-step creation flow for creators who want more control over the launch parameters. All advanced settings are fixed once the coin is created and can’t be edited later.
## Step-by-step guide
### Step 1: Basic info
Fill in the coin details (name, ticker, description, media), then click **Next Step**.
On the right side, **Bonding Curve Preview** shows an estimated `Starting MC` and `Graduation MC` (Market Cap) for reference.
### Step 2: Advanced options
Configure the launch parameters, then click **Create Coin**.
You can also use **Reset all values** to revert the advanced settings back to the defaults for the selected payment token.
As you adjust `Raised` and the token distribution, the **Bonding Curve Preview** will update (including `Starting MC` and `Graduation MC`) to help you visualize the launch.
Note: Coin details and advanced settings can’t be changed or edited after creation, choose carefully.
## Field reference
### Coin Name
The name of your coin as displayed across Base.meme.
### Ticker Symbol
Your coin’s ticker (for example, `PEPE`). This is used to identify your coin when trading.
### Description (optional)
A short description of the coin. This is shown on the coin page and helps traders understand what the coin is about.
### Social links (optional)
Links to your project’s social accounts (for example X / Telegram / Website). These appear on the coin page to help your community find the official channels.
### Media
Upload a cover image or video for your coin.
* Supported formats: JPG, PNG, GIF, MP4
* Max size: 2GB
### Advanced options
#### Payment Token
Select the payment token that backs the coin (for example ETH, USDC, or SOL). The `Raising Goal` value is denominated in this token.
#### Raising Goal (Funding Target)
`Raising Goal` is the amount of the selected payment token that must be collected before triggering graduation and migrating liquidity to the AMM.
* **Range:** must be between **50%** and **100×** of the default `Raising Goal` value for the selected payment token.
* **Example (ETH):** minimum is **1.25 ETH**.
#### Token distribution
Token distribution controls how the total token supply is split between the sale and post-graduation liquidity, with an optional vesting option.
* `Bonding Curve`: set the amount of tokens sold on the bonding curve (**min 50%**, **max 80%**).
* `Pool Migration`: fixed at **20%**. Remaining tokens (after vesting, if any) will be migrated to the Uniswap pool upon graduation.
* `Creator Vault`: allocate a portion of the supply to be locked and released over time after graduation (**0% to 30%**). Vested tokens are not sold on the bonding curve.
Note: The percentages must add up to 100%. Since `Pool Migration` is fixed at 20%, the `Bonding Curve` + `Creator Vault` total must equal 80%.
Vesting lets you lock a portion of the token supply and release it gradually over time. Vested tokens are reserved for the vesting recipient and are not sold on the bonding curve. After the coin graduates and migrates liquidity, vesting begins (optionally after lockup duration) and continues until the full vesting duration completes.
#### Creator Vault settings
Vesting settings are only shown when `Creator Vault` is greater than 0%. If `Creator Vault` is set to 0%, the Vault & Vesting Setup fields will be hidden.
When vesting is enabled, configure:
* `Vault Recipient`: the address that will receive the vested tokens. Defaults to the creator wallet address.
* `Vesting Period`: The number of days it takes for locked tokens to be released linearly after the lockup period ends.
* `Lockup Period` (optional): The number of days tokens remain locked after migration before vesting start.
Vesting starts after graduation (migration) and any configured lockup period, then releases tokens gradually over the vesting duration.
#### Tax Configuration (optional)
Configure an optional token tax that is charged on every transfer and trade. Tax parameters are fixed at creation and cannot be changed afterward.
* **Tax Rate**: The percentage charged on each transfer and trade (default 0%). Setting this to 0% disables the tax feature.
* **Distribution Split**: Allocate the collected tax across four channels:
* **Funds Recipient** — direct revenue to a designated wallet (or to a Vault, see below).
* **Holder Dividend** — proportional distribution to all token holders.
* **Token Burn** — buyback and burn to reduce circulating supply.
* **Add to Liquidity** — routes tax back into the Uniswap V2 liquidity pool.
* **Funds Recipient Address**: The wallet that receives the Funds Recipient share. Defaults to the creator wallet.
For full details on how Tax works, see the [Tax Token](/fees-rewards/tax-token) page.
#### Vault Type
When Tax is enabled, you can optionally select a **Vault** to automatically manage the tax revenue routed to the **Funds Recipient** channel. Instead of sending those funds to a single wallet, the Vault deploys a strategy contract that takes the Funds Recipient's place. The available Vault types are:
* **SnowBall** — All tax revenue is used for continuous buyback & burn, creating pure deflation. [Learn more](/vaults/snowball)
* **BurnDividend** — Starts with buyback & burn, then transitions to a dividend model when the first holder burns tokens. Burners earn a proportional share of future tax revenue. [Learn more](/vaults/burndividend)
* **Gift** — A designated X (Twitter) account controls where tax revenue goes. Requires posting a management tweet at least once every 7 days; otherwise falls back to buyback & burn. [Learn more](/vaults/gift)
* **Split** — Tax revenue is automatically distributed among up to 10 recipients based on pre-configured percentage shares. [Learn more](/vaults/splitvault)
The Vault type is fixed at creation and cannot be changed afterward. For a full overview, see the [Vaults](/vaults) page.
# Explore
Discover new and trending coins on Base.meme! The platform offers 2 browsing experiences to help you find and interact with content.
## Browsing Methods
### 1. Traditional Browsing (Home Page)
The traditional browsing experience provides a comprehensive overview with watchlist functionality:
#### Features:
* **Now Trending Section**: Showcases the hottest coins with detailed information
* **Filtering Options**:
* Use the Sort dropdown to sort by Featured🔥, Last Trade, Creation Time, Progress, or Market Cap
* Use the Pair dropdown to filter tokens that are paired with ETH, USDC, or SOL.
* **Display Toggles**:
* "Listed on Uniswap" - Show only coins transferred and launched on Uniswap
* "Show animations" - Enable/disable animated previews
* **Watchlist Integration**: Add coins to your watchlist for easy tracking
#### How to Use:
1. Browse the "Now Trending" section to see popular coins
2. Use filters to find coins that match your interests
3. Click the star icon to add coins to your watchlist
4. Switch to the **Watchlist** tab to view your marked coins
### 2. Advanced Browsing
The Advanced browsing mode offers a streamlined, data-focused experience for quick trading:
#### Features:
* **3 Column Layout**:
* **Newly Created**: Recently launched coins with real-time data
* **About to Launch**: Coins approaching Uniswap launch with progress indicators
* **Trading Volume**: High-activity coins with volume metrics
* **Quick Buy Integration**: Fast trading directly from the browse interface
* **Real-time Data**: Live market cap, volume, and percentage changes
* **Compact View**: More coins visible at once for efficient scanning
#### How to Use:
1. Access Advanced mode from the sidebar navigation
2. Scan the 3 columns to quickly identify opportunities
3. Use the integrated buy buttons for immediate trading
4. Monitor real-time price changes and volume data
## Choosing Your Browsing Style
### Use traditional browsing when:
* You want to explore and discover new content leisurely
* You prefer to organize coins in watchlists
* You want detailed information and visual previews
* You're building a long-term portfolio
### Use advanced browsing when:
* You're actively trading and need quick access
* You want to monitor multiple metrics simultaneously
* You prefer a data-dense, efficient interface
* You're looking for immediate trading opportunities
Both browsing methods give you access to the same coins and trading functionality - choose the one that best fits your trading style and preferences!
# Trading Guide
Every coin (ERC-20 token) on Base.meme is instantly trade-able from the moment it goes live. Every one have equal access to buy and sell at any time. Whether you're supporting your favorite creator, enjoying creating, or trading meme on Base.meme has never been easier.
> **New to trading?** Check out our [quick start guide](/getting-started/create-and-trade#trading-on-freeefun) for basic trading instructions.
## What am I trading?
When you trade on Base.meme, you buy and sell a coin (ERC-20 Token) via bonding curve or Uniswap liquidity pool. These coins can be freely traded anytime, giving you the flexibility to:
* Buy coins that you want to collect
* Sell coins when you want to exit a position
* Build a portfolio of content you believe in
## Buying
1. Navigate to the coin you want to buy
2. Select the "Buy" option
3. Enter a custom amount or select from preset amounts
**Reminder**: Review the “You’ll receive” amount before continuing
4. Select "Place Trade" to confirm your purchase.
5. Your new balance will update automatically once the transaction is confirmed.
## Selling
1. Navigate to the coin you want to sell
2. Select the "Sell" option
3. Enter a custom amount or select from preset percentages (25%, 50%, 75%, or 100%)\
**Reminder**: Review the “You’ll receive” amount before continuing
4. Select "Place Trade" to confirm your sale
5. Your balance (in the selected payment token, e.g. ETH / USDC / SOL) will update automatically once the transaction is confirmed
## Advanced Trading Tips
### Portfolio Management
* Diversify your holdings across different creators and content types
* Monitor your positions regularly through your profile
* Consider the long-term potential of creators you support
### Trading Strategy
* Start with small amounts to get familiar with the platform
* Pay attention to community engagement and creator activity
* Use the preset amounts for quick trades
* Always review transaction details before confirming
## Need help or have questions?
If you need more help, don't hesitate to contact us via X (formerly Twitter) and Discord.
**Legal disclaimer**: Coins are ERC-20 representations of user creation on Base.meme and are for entertainment and social engagement purposes only.
# Account
## Your Profile
### Edit Profile
[How to update your profile information?](/account/edit-profile)
## Your Account
### Connect Wallet
[How to connect your wallet to Base.meme?](/getting-started/connect-wallet)
### Edit Email
[How to update your email address?](/account/edit-email)
### Username
[How to update your username?](/account/username)
# Edit Email
In your account settings, you have the option to update and change the email address connected to your account. The new address will be where you receive all notifications and the verification code, so please be mindful when making this change.
To change the email connected to your account:
1. Navigate to your account settings
2. Scroll to "Email"
3. Enter your new email address, and select submit.
4. Confirm your change by entering your verification code.
5. Updated! Your email has now been updated.
# Edit Profile
Editing your profile allows you to update your **profile picture**, **display name** and **bio**. To make these changes, you must have verified your email address. This is a great way to add a personal touch to your profile.
To update your profile, navigate to your profile from the left-hand menu and select then "**Edit profile**" at the top of the page.
# Username
We've introduced username to improve your experience on our platform by allowing for easier identification and adding a personal touch to your interactions on Base.meme.
## How do I change my username?
1. Navigate to your Settings
2. Ensure that the Account tab is selected
3. Edit your username
* Minimum 3 characters
* Maximum 38 characters
* No special characters, spaces or symbols
4. Click on “Save”
***
## How can my profile on Base.meme be identified?
There are multiple ways that your account can be identified on Base.meme:
* **Display Name**: This is a way to personalize your profile. It is purely aesthetic and can be anything from a pseudonym to your real name or even just the same as your username.
* **Username**: This is a unique, personalized identifier you can choose to represent your profile.
* Your profile will be discoverable with @YourUsername
* **Wallet Address**: Your wallet address is a unique identifier starting with “0x” followed by a string of 42 hexadecimal characters.
* For example 0xEdC703C1Aa50332Bd29A9597F2BE05A2321Ba7Da
# Vaults
Vaults are smart contracts that automatically manage the tax revenue collected from a token's trades and transfers. When a creator enables the **Tax Token** feature, they can optionally attach a Vault to control how a portion of that tax is used — whether for buyback & burn, dividends, social gifting, or multi-party revenue sharing.
Each Vault type offers a different strategy for managing the collected tax:
| Vault Type | Strategy | Summary |
| ------------------------------------ | --------------- | ---------------------------------------------------------------------------------------------------------------------------------------- |
| [SnowBall](/vaults/snowball) | Buyback & Burn | All tax revenue is used to buy back and permanently burn tokens, creating continuous deflation. |
| [BurnDividend](/vaults/burndividend) | Burn-to-Earn | Starts with buyback & burn, then transitions to a dividend model where holders burn tokens to earn a share of future tax revenue. |
| [Gift](/vaults/gift) | Social Gifting | A designated X (Twitter) account controls where tax revenue is directed. If inactive for 7 days, the vault falls back to buyback & burn. |
| [Split](/vaults/splitvault) | Revenue Sharing | Tax revenue is automatically distributed among up to 10 recipients based on pre-configured percentage shares. |
***
## How Vaults Are Created
Vaults are created automatically when a token is launched with the appropriate tax configuration. The Vault type is selected during token creation in both **Standard** and **Advanced** modes.
Once created, the Vault type and its parameters cannot be changed.
***
## Common Concepts
### Buyback & Burn
Several Vault types use a buyback & burn mechanism:
1. Tax revenue (in the payment token, e.g. ETH) accumulates in the Vault.
2. A Keeper Bot periodically triggers a buyback — purchasing the token from Uniswap V2.
3. The purchased tokens are sent to `0x...dEaD` and permanently removed from circulation.
This creates a deflationary pressure: the more trading activity, the more tokens are burned.
### Keeper Bots
Keeper Bots are automated services that trigger Vault operations (buybacks, distributions, state transitions). They run in the background and require no action from creators or holders.
### Emergency Safeguards
All Vaults include safety mechanisms:
* **Reentrancy protection** to prevent exploits.
* **Slippage protection** on buyback operations.
* **Emergency withdrawal** for the platform to recover stuck funds without affecting user balances.
* **Token rescue** to recover mistakenly sent ERC-20 tokens (the Vault's own token cannot be rescued).
# SnowBall Vault
The SnowBall Vault is the simplest Vault type — it takes all tax revenue and uses it to buy back and burn tokens. No dividends, no complexity. Just continuous deflation.
***
## How It Works
```
Tax Revenue (ETH) → Vault → Buyback on Uniswap V2 → Burn to 0x...dEaD
```
1. Every trade and transfer on the token generates tax (configured by the creator).
2. The tax revenue flows into the SnowBall Vault.
3. A Keeper Bot periodically calls the Vault to execute a buyback — purchasing the token from Uniswap V2 using the accumulated funds.
4. The purchased tokens are sent to the dead address (`0x...dEaD`) and permanently destroyed.
This cycle repeats as long as the token is being traded. More activity means more tax, more buybacks, and more tokens burned.
***
## Key Characteristics
* **Pure deflation** — 100% of the tax revenue allocated to this Vault is used for buyback and burn. There are no dividends or other distributions.
* **Automatic execution** — Keeper Bots handle all buyback operations. No manual action is needed from the creator or holders.
* **Transparent tracking** — The Vault tracks cumulative statistics including total funds spent on buybacks and total tokens burned.
* **Slippage protection** — Each buyback includes a minimum output check to prevent unfavorable trades.
***
## Who Benefits
All token holders benefit equally from the SnowBall Vault. As the circulating supply decreases over time, each remaining token represents a larger share of the total supply.
***
## When to Use SnowBall
SnowBall is ideal for creators who want a straightforward, set-and-forget deflationary mechanism. It works best for tokens where:
* The community values long-term supply reduction.
* The creator wants a simple, transparent tokenomics model.
* No dividend or reward distribution is needed.
# BurnDividend Vault
The BurnDividend Vault combines two mechanisms in a single lifecycle: it starts with automatic buyback & burn (like SnowBall), then transitions into a dividend model where holders can burn their tokens to earn a proportional share of future tax revenue.
***
## Two-Phase Lifecycle
### Phase 1: Buyback Mode (Automatic)
```
Tax Revenue (ETH) → Vault → Auto Buyback & Burn
```
When the Vault is first created, it operates in **Buyback mode**:
* Tax revenue flows into the Vault.
* When the balance reaches the threshold (0.025 ETH), the Vault automatically executes a buyback — purchasing and burning tokens.
* Buybacks are triggered automatically as ETH arrives, with no Keeper Bot intervention needed.
* If a buyback fails, the funds stay in the Vault and the next incoming deposit will retry.
This phase reduces the token's circulating supply, similar to the SnowBall Vault.
### Phase Transition
The transition from Buyback to Dividend mode is triggered by the **first user burn**:
1. Any holder calls the burn function for the first time.
2. The Vault automatically uses all remaining ETH for one final buyback & burn.
3. The Vault switches to Dividend mode. **This transition is irreversible.**
### Phase 2: Dividend Mode
```
Tax Revenue (ETH) → Vault → Distributed proportionally to all burners
```
Once in Dividend mode:
* **Burning tokens** — Holders voluntarily burn their tokens to earn a share of future tax revenue. Burned tokens are permanently destroyed.
* **Earning dividends** — All subsequent tax revenue flowing into the Vault is distributed proportionally based on each holder's share of the total burned amount.
* **Claiming rewards** — Holders can claim their accumulated ETH dividends at any time.
***
## How Dividends Are Calculated
Your dividend share is determined by how many tokens you've burned relative to the total amount burned by all participants:
```
Your Share = Your Burned Amount ÷ Total Burned Amount
```
The more tokens you burn, the larger your share of ongoing tax revenue. Dividends accumulate continuously as new tax revenue enters the Vault and can be claimed at any time.
***
## Key Characteristics
* **Dual benefit** — Early buybacks reduce supply (benefiting all holders), then dividends reward active participants who burn tokens.
* **Irreversible transition** — Once Dividend mode activates, the Vault never returns to Buyback mode.
* **Safe claiming** — If a dividend transfer fails, the funds are queued and can be claimed again later. No funds are lost.
* **No minimum burn** — Any amount of tokens can be burned to start earning dividends.
***
## When to Use BurnDividend
BurnDividend is ideal for tokens where:
* The creator wants both deflation and holder rewards.
* The community is incentivized to actively participate in tokenomics by burning.
* A two-phase model (early growth via deflation → long-term rewards) fits the project's narrative.
# Gift Vault
The Gift Vault connects a token's tax revenue to an X (Twitter) account. A designated X user — the **Gift Owner** — controls where the tax funds are directed. If the Gift Owner stops engaging, the Vault automatically falls back to buyback & burn.
***
## How It Works
### Assigning a Gift Owner
During token creation, the creator specifies an X (Twitter) handle as the Gift Owner. This account gains the ability to direct the token's tax revenue to any EVM wallet address.
### Managing the Vault via Tweet
The Gift Owner controls the Vault by posting a tweet in a specific format:
```
gift the fee from [token_address] to [wallet_address] #BasememeGift
```
Once the tweet is detected and verified, the tax revenue is forwarded to the specified wallet address. The Gift Owner can change the destination at any time by posting a new tweet.
### 7-Day Grace Period
The Gift Owner must post a valid management tweet **at least once every 7 days** to maintain control. If 7 days pass without a new tweet, the Vault automatically transitions to **Fallback mode** (buyback & burn), and control is permanently lost.
***
## Vault States
The Gift Vault has three states:
| State | Description |
| ----------------------- | ------------------------------------------------------------------------------------------------------------------------------- |
| **Accumulating** | Tax revenue is collecting in the Vault, waiting for the Gift Owner's first management tweet. |
| **Streaming** | The Gift Owner has taken control. Tax revenue is forwarded to the wallet address specified in the latest tweet. |
| **Fallback (SnowBall)** | The Gift Owner failed to post within 7 days. The Vault permanently switches to buyback & burn mode, just like a SnowBall Vault. |
```
Accumulating → (first tweet verified) → Streaming → (7 days without tweet) → Fallback SnowBall
```
***
## Key Characteristics
* **Social proof** — Vault management is tied to public X (Twitter) activity, creating transparency and accountability.
* **Flexible routing** — The Gift Owner can redirect tax revenue to any wallet address at any time, simply by posting a new tweet.
* **Built-in accountability** — The 7-day timeout ensures inactive Gift Owners lose control, protecting token holders.
* **Safe fallback** — If the Gift Owner goes inactive, the Vault defaults to buyback & burn, which benefits all token holders.
* **Immutable assignment** — The Gift Owner's X handle is set at token creation and cannot be changed.
***
## Who Benefits
* **Gift Owners** can earn ongoing revenue from a token's tax without holding or trading the token themselves.
* **Token holders** benefit from the accountability mechanism — if the Gift Owner becomes inactive, all tax revenue goes toward reducing the token supply.
* **Creators** can use Gift Vaults to incentivize influencers, community leaders, or partners by giving them control over a revenue stream tied to the token's success.
***
## When to Use Gift Vault
Gift Vault is ideal for:
* Tokens created to support or reward a specific X (Twitter) personality.
* Community-driven projects where an influencer or KOL manages the revenue.
* Scenarios where the creator wants to tie token economics to social engagement.
# Split Vault
The Split Vault distributes a token's tax revenue across multiple recipients based on pre-configured percentage shares. Instead of sending all market earnings to a single wallet, the tax is automatically split among up to 10 different addresses.
***
## How It Works
```
Tax Revenue (ETH) → Split Vault → Automatic distribution to recipients by share %
```
1. Every trade and transfer generates tax, and the market share of that tax flows into the Split Vault.
2. When ETH arrives, the Vault automatically attempts to distribute it to all configured recipients.
3. Each recipient receives their configured percentage of every distribution.
***
## Configuration
Split Vault recipients are configured during token creation and **cannot be changed afterward**.
* **Recipients**: 1 to 10 wallet addresses.
* **Shares**: Each recipient has a percentage share (in basis points). The total must equal exactly 100% (10,000 bps).
### Example
| Recipient | Share |
| ---------------- | ----- |
| Creator wallet | 60% |
| Marketing wallet | 25% |
| Community fund | 15% |
In this example, for every 1 ETH of tax revenue, the creator receives 0.6 ETH, the marketing wallet receives 0.25 ETH, and the community fund receives 0.15 ETH.
***
## Distribution Mechanism
### Automatic Distribution
When ETH enters the Vault, it automatically tries to distribute funds to all recipients in the same transaction. This works seamlessly for standard wallet addresses.
### Manual Claiming
If an automatic distribution fails for a specific recipient (for example, if the recipient is a contract with a complex `receive()` function), the funds are safely held in the Vault. Recipients can then manually claim their share at any time:
* **Dispatch** — triggers distribution to all recipients with unclaimed balances.
* **Claim** — a specific recipient withdraws their own accumulated balance.
No funds are lost if automatic distribution fails — they remain in the Vault until claimed.
***
## Key Characteristics
* **Multi-recipient** — supports up to 10 different wallet addresses, each with a configurable share.
* **Immutable configuration** — recipients and their shares are fixed at token creation and cannot be changed.
* **Best-effort auto-distribution** — funds are distributed automatically when received, with manual fallback if needed.
* **Native token only** — Split Vault currently supports native payment tokens (ETH) only.
* **Transparent tracking** — all distributions and claims are recorded on-chain via events.
***
## When to Use Split Vault
Split Vault is ideal for:
* Projects with multiple stakeholders who share the token's tax revenue.
* Tokens where the creator wants to allocate earnings to different wallets (e.g., operations, marketing, community treasury).
* Teams that want transparent, automated, and trustless revenue sharing without manual transfers.
# Fees & Rewards
Learn more about how fees and rewards work on Base.meme.
### Understanding Rewards on Base.meme
[Understanding Rewards on Base.meme](/fees-rewards/rewards-on-base-meme)
### How fees and rewards calculated on Base.meme?
[Example of how fees and rewards calculated on Base.meme](/fees-rewards/fee-structure)
## How to earn？
### Creator Earnings
[How to earn as a creator on Base.meme?](/fees-rewards/creator-earn)
### Create Referral Rewards
[How to earn Create Referral Rewards on Base.meme?](/fees-rewards/create-referral)
## How to claim?
[How to claim my rewards on Base.meme?](/fees-rewards/claim-rewards)
# Rewards on Base.meme
Base.meme’s mission is to make the internet valuable and free—that’s why we’re building a platform that makes creating and trading coins easy, fun, and rewarding.
***
## Breakdown of our Rewards:
Our Rewards enable creators and developers on Base.meme to earn from trading activity through two distinct reward systems: **Trade Rewards (Bonding Curve Phase)** and **Market Rewards (Uniswap Phase)**.
### 1. Trade Rewards
When trades happen during the Bonding Curve phase on Base.meme, fees are distributed as follows:
**2% total fee:**
* 1% to Creator Rewards
* 0.2% to Trade Referral Rewards
* 0.2% to Create Referral Rewards
* 0.6% to Base.meme
**Important notes:**
* Trade rewards for both buy and sell activity are paid in the pair token selected at token creation, which may be ETH, USDC or SOL on Base.
* Trade rewards are only earned on trades that happen during the Bonding Curve phase on Base.meme.
### 2. Market Rewards (After Graduation)
After a coin graduates, trading moves from the Bonding Curve on Base.meme to a Uniswap market. The fee and distribution depend on **when the coin was created**.
Coins created **on or after December 5,** **2025**will be migrated to **Uniswap V4** after graduate**.** All trades on the Uniswap V4 market are subject to a **2% fee**, distributed the same way as during the Bonding Curve phase:
* 1% to Creator Rewards
* 0.2% to Trade Referral Rewards
* 0.2% to Create Referral Rewards
* 0.6% to Base.meme
Coins created **before December 5,** **2025**will be migrated to **Uniswap V3** after graduate**.** All trades on the Uniswap V3 market are subject to a **1% fee**, distributed as follows:
* 0.5% to Creator Rewards
* 0.1% to Create Referral Rewards
* 0.4% to Base.meme
**Important notes:**
* Market rewards are only paid after the coin has graduated from the Bonding Curve phase and the Uniswap market (V3 or V4) is deployed.
* Coins created on or after December 5, 2025 use Uniswap V4 market; while coins created before that date use Uniswap V3 market.
* Market rewards are NOT earned on trades on alternative markets established by third parties.
* For Uniswap V4, market rewards for buy and sell trades are paid in the pair token selected at token creation, which may be ETH, USDC or SOL on Base.
* For Uniswap V3, market rewards for buy trades are paid in chain native token, which is ETH, while those for sell trades are paid in the coin being traded.
* In both Uniswap V3 and V4 markets, rewards accumulate in Base.meme’s Reward Protocol and must be claimed manually before they reach user wallets.
## Understanding Each Reward:
### Creator Rewards:
Earned by the coin creator. The recipient remains the same across all trades for the same coin.
### Trade Referral Rewards:
Earned by users who drive traffic that results in a trade. Each trade can have a different reward recipient, even for the same coin.
### Create Referral Rewards:
If the creator of the coin was invited to Base.meme by another user, the inviter gets this reward. The recipient remains the same across all trades for the same coin.
### Base.meme Fee:
This fee helps support the ongoing development and maintenance of the platform.
# Fee Structure
Base.meme operates on Base with following fee structures setup. Below is a summary of each fee, and its rate.
## 1. First Buy Fee
**How it's charged:** Collected as an extra fee from first buyer of the coin.\
**Note:** Create on Base.meme is completely free. First buy fee is charged on whoever first bought the created coin.
| Paired with | Amount |
| ----------- | ---------- |
| ETH | 0.0015 ETH |
| USDC | 5 USDC |
| SOL | 0.04 SOL |
## 2. Trading Fee (Bonding Curve Phase)
**Fee Rate:** 2%\
**Note:** Fees are charged in the pair token selected at token creation, which may be ETH, USDC or SOL on Base.
| Distribution | Rate |
| ------------------ | ---- |
| Creator | 1% |
| Creator's Referrer | 0.2% |
| Trade Referrer | 0.2% |
| Base.meme | 0.6% |
## 3. Seeding Fee (Liquidity Pool Creation)
**How it's charged:** Deducted from the liquidity pool at the time of pool creation.\
**Note:** Fees are charged in the pair token selected at token creation, which may be ETH, USDC or SOL on Base.
For **Standard mode** coins, the seeding fee is charged using the fixed amounts below.
| Paired with | Amount | DEX Protocol | Pool Type |
| ----------- | -------- | ------------ | ------------- |
| ETH | 0.15 ETH | Uniswap | V3 or V4 pool |
| USDC | 500 USDC | Uniswap | V4 pool |
| SOL | 4 SOL | Uniswap | V4 pool |
For **Advanced mode** coins, the seeding fee is **6% of the coin’s funding target (`Raised`)**, charged in the selected payment token. Base.meme will show the final amount before you confirm creation.
## 4. LP Fee (After Graduation)
**Fee Rate:** Depends on when the coin was created:\
\- For coins created on or after December 5, 2025 (Uniswap V4): **2% of each trade**.\
\- For coins created before December 5, 2025 (Uniswap V3): **1% of each trade**.\
**LP Token Handling:** After liquidity is added, LP tokens are held by the token's bonding curve contract and cannot be withdrawn or transferred, ensuring permanent liquidity lock.\
**Note:** Fees are charged in the pair token selected at token creation, which may be ETH, USDC or SOL on Base.
**Uniswap V4 pools (coins created on or after December 5, 2025)**
| Distribution | Rate |
| ------------------ | ---- |
| Creator | 1% |
| Creator's Referrer | 0.2% |
| Trade Referrer | 0.2% |
| Base.meme | 0.6% |
**Uniswap V3 pools (coins created before December 5, 2025)**
| Distribution | Rate |
| ------------------ | ---- |
| Creator | 0.5% |
| Creator's Referrer | 0.1% |
| Base.meme | 0.4% |
***
## 5. Tax Token Fees
**Tax Tokens** use a separate factory and a different fee structure than the standard V4 deployment. They graduate to **Uniswap V2** and support an optional creator-defined transfer/trade tax. See [Tax Token](/fees-rewards/tax-token) for full details.
### Platform Trading Fee (Bonding Curve only)
The platform trading fee on Tax Tokens during the **bonding-curve phase** is **1%** (vs **2%** on V4 coins). It is split as follows:
| Distribution | Rate |
| ------------------ | ---- |
| Creator | 0.5% |
| Creator's Referrer | 0.1% |
| Trade Referrer | 0.1% |
| Base.meme | 0.3% |
After graduation, Tax Tokens trade on standard **Uniswap V2** pools. Uniswap V2 does not support protocol fee collection on pool swaps, so Base.meme does not collect a platform trading fee on graduated trades — only the standard V2 LP fee (0.3%) applies, which accrues to the bonding curve contract as the LP holder.
### Migration Fee
When a Tax Token reaches its funding target and graduates to Uniswap V2, a one-time migration fee equal to **6% of the funding target** is charged. For a default 2.5 ETH funding target this is 0.15 ETH. The fee is paid in the selected payment token.
### Transfer/Trade Tax (creator-configured)
If the creator enabled the Tax Token feature, an additional tax (0% – creator-defined) is charged on every transfer and trade in the token contract itself. This tax is **separate from and on top of** the platform fee above.
Collected tax accumulates in the token contract and is distributed across up to four channels when `TaxProcessor.dispatch()` runs:
| Channel | Description |
| ---------------- | ------------------------------------------------------------------------------------ |
| Funds Recipient | Direct revenue to the creator's designated wallet, or to a Vault if one is attached. |
| Holder Dividend | Proportional distribution to all token holders via the Dividend Contract. |
| Token Burn | Buyback on Uniswap V2, burned to the dead address. |
| Add to Liquidity | Routes back into the Uniswap V2 LP. |
The split (in basis points totaling 100%) is fixed at creation and immutable. When `TaxProcessor.dispatch()` executes, a 10% processor fee is deducted from the dispatched amount before the channel split is applied.
### Vaults
Creators may attach a **Vault** at creation to automate the **Funds Recipient** channel: SnowBall (buyback & burn), BurnDividend (burn-to-earn), Gift (X-handle controlled), or Split (multi-recipient). See [Vaults](/vaults) for the full strategy comparison.
***
## Example Scenarios
These examples illustrate how fees are charged and distributed at different stages of a coin's lifecycle on Base.meme.
*All examples use 1 unit trade amount for demonstration purposes*
### ETH Paired Token
Fee Stage
Fee Type
Amount
Distribution
Token Creation
First Buy Fee
0.0015 ETH
To Base.meme
Bonding Curve
Trading Fee (2%)
0.02 ETH (for 1 ETH trade)
Creator: 0.01 ETH
Creator's referrer: 0.002 ETH
Trade referrer: 0.002 ETH
Base.meme: 0.006 ETH
Pool Creation
Seeding Fee
0.15 ETH
To Base.meme
After Graduation (Uniswap V4)
LP Fee (2%)
0.02 ETH
(for 1 ETH trade)
Creator: 0.01 ETH
Creator's referrer: 0.002 ETH
Trade referrer: 0.002 ETH
Base.meme: 0.006 ETH
After Graduation (Uniswap V3)
LP Fee (1%)
0.01 ETH
(for 1 ETH trade)
Creator: 0.005 ETH
Creator's referrer: 0.001 ETH
Base.meme: 0.004 ETH
### USDC Paired Token
Fee Stage
Fee Type
Amount
Distribution
Token Creation
First Buy Fee
5 USDC
To Base.meme
Bonding Curve
Trading Fee (2%)
0.02 USDC (for 1 USDC trade)
Creator: 0.01 USDC
Creator's referrer: 0.002 USDC
Trade referrer: 0.002 USDC
Base.meme: 0.006 USDC
Pool Creation
Seeding Fee
500 USDC
To Base.meme
After Graduation (Uniswap V4)
LP Fee (2%)
0.02 USDC
(for 1 USDC trade)
Creator: 0.01 USDC
Creator's referrer: 0.002 USDC
Trade referrer: 0.002 USDC
Base.meme: 0.006 USDC
### SOL Paired Token
Fee Stage
Fee Type
Amount
Distribution
Token Creation
First Buy Fee
0.04 SOL
To Base.meme
Bonding Curve
Trading Fee (2%)
0.02 SOL (for 1 SOL trade)
Creator: 0.01 SOL
Creator's referrer: 0.002 SOL
Trade referrer: 0.002 SOL
Base.meme: 0.006 SOL
Pool Creation
Seeding Fee
4 SOL
To Base.meme
After Graduation (Uniswap V4)
LP Fee (2%)
0.02 SOL
(for 1 SOL trade)
Creator: 0.01 SOL
Creator's referrer: 0.002 SOL
Trade referrer: 0.002 SOL
Base.meme: 0.006 SOL
### Tax Token (ETH Paired)
Tax Tokens use a separate factory and graduate to Uniswap V2 instead of V4. The platform trading fee is 1% (vs 2% for V4) and applies only during the bonding-curve phase.
Fee Stage
Fee Type
Amount
Distribution
Token Creation
First Buy Fee
0.0015 ETH
To Base.meme
Bonding Curve
Trading Fee (1%)
0.01 ETH (for 1 ETH trade)
Creator: 0.005 ETH
Creator's referrer: 0.001 ETH
Trade referrer: 0.001 ETH
Base.meme: 0.003 ETH
Pool Creation
Migration Fee
0.15 ETH (6% of default 2.5 ETH funding target)
To Base.meme
After Graduation (Uniswap V2)
V2 LP Fee (0.3%)
0.003 ETH
(for 1 ETH trade)
To LP holder (bonding curve contract). Base.meme does not collect a platform fee on graduated trades.
**Note:** If the creator configured a Token Tax, an additional creator-defined percentage is charged on every transfer and trade in the token contract. This tax is separate from the platform fees above and is distributed across the four channels (Funds Recipient / Holder Dividend / Token Burn / Add to Liquidity) when `TaxProcessor.dispatch()` runs. See [Tax Token](/fees-rewards/tax-token) for details.
# Creator Earn
Base.meme makes it easy for creators to earn with passive rewards on market activities.
## 1. Creator trade
As a creator on Base.meme, you do NOT receive any initial allocation of your coin. If you want to own your own coin, you can buy it during the Bonding Curve phase, just like any other participant. Buying early in this phase gives you the best price.
**It is highly recommended that you purchase your own coin at the time of creation. This helps prevent others from attacking or sniping your token and ensures you have an initial stake in your project.**
**TIP:** Strategic buying and holding can maximize your long-term earnings as a creator.
## 2. Creator rewards
Creators also earn passive rewards whenever people trade their coins. There are 2 types of creator rewards:
### Trade rewards (Bonding Curve Phase)
* Earn 1% of the trade value on every trade that happens during the Bonding Curve phase on Base.meme.
* This does NOT apply to trades on other platforms or after the coin graduates to Uniswap.
### Market rewards (After Graduation)
* After your coin graduates from the Bonding Curve phase and the Uniswap market is created, you earn creator rewards on every trade in the Uniswap market.
* For coins created on or after December 5, 2025 (Uniswap V4 market), creators earn 1% of the trade value on every trade.
* For coins created before December 5, 2025 (Uniswap V3 market), creators earn 0.5% of the trade value on every trade.
* For buys: Creators earn their share of the trade value in pair token selected at token creation, which may be ETH, USDC, or SOL on Base.
* For sells:
* Uniswap V3: Creators earn their share of the trade value in their own coin.
* Uniswap V4: Creators earn their share of the trade value in pair token selected at token creation, which may be ETH, USDC, or SOL on Base.
Check out our [article](/fees-rewards/rewards-on-base-meme) here for an in-depth breakdown of how protocol rewards work on Base.meme.
# Claim Rewards
On Base.meme, creators and referrers can earn rewards in two phases: during the Bonding Curve phase and after graduation on Uniswap (LP rewards via Uniswap V3 or V4, depending on when the coin was created). In all cases, rewards are ultimately claimed by the user from Base.meme’s Reward Protocol; what differs is how they are deposited into the Reward Protocol.
***
## 1. Claiming Bonding Curve Phase Rewards
During the Bonding Curve phase, rewards (such as creator rewards, trade referral rewards, and create referral rewards) accumulate as users trade your coin on Base.meme. These rewards are automatically deposited into Base.meme’s Reward Protocol.
Your rewards are viewable through your wallet view on the nav bar and your user dashboard. Viewing your dashboard, you can view and claim the total rewards earned.
**How to claim:**
1. Go to your user dashboard.
2. If you have unclaimed rewards, you will see a 'Claim' button.
3. Click 'Claim' and go to the Rewards page.
4. Connect your wallet.
5. Click 'Claim' and confirm the transaction in your wallet.
***
## 2. Claiming LP (Market) Rewards (After Graduation)
You earn LP rewards (market rewards) from trading activity on the Uniswap pool (V3 for coins created before December 5, 2025 whereas V4 for coins created on or after December 5, 2025). These rewards are distributed to creators and referrers according to the fee structure.
**How it works on Uniswap V3 markets?**
* For buys: Rewards are paid in pair token selected at token creation, which may be ETH, USDC, or SOL on Base.
* For sells: Rewards are paid in your own coin.
**How to claim rewards on Uniswap V3 markets?**
For coins created before December 5, 2025 that migrated to Uniswap V3:
1. Go to your coin's page on Base.meme.
2. Connect your wallet.
3. If there are unclaimed LP rewards in the Uniswap V3 pool, you will see a separate 'Claim LP Rewards' button (or similar indicator).
4. Click 'Claim LP Rewards' to withdraw LP fees from the Uniswap V3 pool and deposit them into Base.meme’s Reward Protocol.
5. After that, go to your user dashboard and follow the steps in the “Claiming Bonding Curve Phase Rewards” section to claim the accumulated rewards (including these LP rewards) to your wallet.
**How it works on Uniswap V4 markets?**
* For coins created on or after December 5, 2025 that migrated to Uniswap V4, both buy / sell activity rewards are paid in pair token selected at token creation, which may be ETH, USDC, or SOL on Base.
* Rewards (LP fees) are automatically withdrawn from the Uniswap V4 pool and deposited into Base.meme’s Reward Protocol together with other rewards. You will see these LP rewards on your Rewards page and claim them in the same way as Bonding Curve rewards.
***
**Note:**
* All rewards (Bonding Curve, Uniswap V3 LP, Uniswap V4 LP) must be claimed manually from Base.meme’s Reward Protocol before they reach your wallet.
* Bonding Curve and Uniswap V4 LP rewards are automatically deposited into the Reward Protocol; Uniswap V3 LP rewards require an extra step to pull them from the Uniswap V3 pool into the Reward Protocol before claiming.
* Make sure to check both sections if your coin has graduated to Uniswap.
# Create Referral
Create Referral is part of Base.meme Protocol Rewards, you will get 0.2% Trade Rewards and 0.1% Market Rewards - refer [Rewards on Base.meme](/fees-rewards/rewards-on-base-meme) for complete details. For every creator you invite, you'll be rewarded every time their Coin gets traded!
This reward incentivizes the Base.meme community to share and invite creators onto the platform.
**Want to invite a creator to Base.meme?**
Invite them using our create referral links and earn rewards.
**Who should I invite?**
* Your friends
* Your family
* Anyone who you think needs(!) to be a creator on Base.meme
* A small private group where you know everyone who can access your posts.
#### **How do I share my Create Referral Link? (mobile)**
1. Open menu by click on profile gravatar, then select **Invite.**
2. Viewing your referral, you can share your referral easily by copying your link or through your social accounts:
* X (formerly Twitter)
* Telegram
* Whatsapp
* You may also download and share your referral image and QR code.
3. Invite creators and earn rewards.
#### **How do I share my Create Referral Link? (web)**
1. To invite a creator to Base.meme, select **Invite** from top navigation bar.
2. Viewing your referral, you can share your referral easily by copying your link or through your social accounts:
* X (formerly Twitter)
* Telegram
* Whatsapp
* You may also download and share your referral image and QR code.
3. Invite creators and earn rewards.
# Tax Token
Base.meme's Tax Token feature gives creators control over token economics through configurable transfer and trade taxes. Instead of platform-assigned creator rewards, creators can set up a tax on their token that generates revenue from every transfer and trade.
***
## How Tax Works
A Tax Token charges a configurable percentage on every token transfer and trade. The tax is deducted automatically and accumulates in the token contract. Once the accumulated tax reaches a threshold, the TaxProcessor distributes the funds according to the creator's configured split.
Tax is completely separate from Base.meme's 1% platform trading fee on Tax Tokens. The platform fee is charged on all trades regardless of whether the token has tax enabled.
***
## Distribution Channels
When tax is collected, it is distributed across four channels based on the split configured at creation. Each channel serves a different purpose:
| Channel | Description |
| -------------------- | ------------------------------------------------------------------------------------------------------------------------------------- |
| **Funds Recipient** | Direct revenue sent to the creator's designated wallet address. This is the primary way creators earn from their token. |
| **Holder Dividend** | Proportional distribution to all token holders. When this channel is active, a Dividend Contract is deployed to manage distributions. |
| **Token Burn** | Buyback and burn mechanism that purchases tokens from Uniswap V2 and burns them, permanently reducing the circulating supply. |
| **Add to Liquidity** | Routes tax funds back into the Uniswap V2 liquidity pool, deepening liquidity and supporting price stability. |
***
## Configuration During Creation
Tax is configured during token creation and is available in both **Standard** and **Advanced** creation modes. All tax parameters are fixed at creation and cannot be changed afterward.
### Tax Rate
The percentage charged on each token transfer and trade. Setting the tax rate to 0% effectively disables the tax feature.
### Distribution Split
The allocation of collected tax across the four distribution channels, specified in basis points (bps). The total across all four channels must equal 100% of the tax collected.
### Funds Recipient Address
The wallet address that receives the Funds Recipient share of the tax. Defaults to the creator's wallet address.
***
## Processing Mechanism
Tax funds accumulate in the token contract until a threshold is reached. At that point, the `TaxProcessor.dispatch()` function distributes the accumulated tax according to the configured split.
* **Anyone can trigger** the dispatch function — it is a public call.
* An **automated bot** monitors tax accumulation and triggers distribution when the threshold is met, so creators and holders generally do not need to call it manually.
***
## Dividend Claiming
If the Holder Dividend channel is active, token holders earn a proportional share of the tax allocated to dividends.
* Holders can manually claim their dividends by calling `withdrawDividends()` on the Dividend Contract.
* Automated distributions may also deliver dividends to holders without requiring manual action.
***
## Key Points
* **Tax is optional** — creators can set a 0% tax rate to launch without any token tax.
* **Separate from platform fees** — Base.meme's platform trading fee on Tax Tokens (1%) applies to all trades regardless of the token's tax configuration.
* **Immutable after creation** — the tax rate, distribution split, and funds recipient address are all fixed at token creation and cannot be modified later.
* **Available in both modes** — Tax configuration is accessible in both Standard and Advanced creation modes.
***
## See Also
* [Vaults](/vaults) — automated strategies (SnowBall / BurnDividend / Gift / Split) that manage the Tax Token's revenue.
# For Developers
Let's dive into the implementation. This section is mainly for developers.
### Contracts & ABI
[Contracts & ABI](/for-developers/contracts-and-abi)
### Creating a Coin
[Creating a Coin](/for-developers/creating-a-coin)
### Trading Coins
[Trading Coins](/for-developers/trading-coins)
### Migrating Coins
[Migrating Coins](/for-developers/migrating-coins)
### Claiming Market Rewards
[Claiming Marker Rewards](/for-developers/claiming-market-rewards)
### Utils
[Utils](/for-developers/utils)
# Contracts & ABI
## Deployed Contract Addresses
### Base (Chain Id: 8453)
#### Current deployment (migrated to Uniswap V4)
Contract
Address
Basememe Factory
0xC0599137dbF994d238f68e96CA0AfaddeE57Af1B
Basememe Factory Trade Helper
0xBd6bc115a8c944305b341f294c57F4eB44C1E2F4
Bonding Curve Implementation
0x3Af9745CeF866D69bB99f74D2d0B5025805878a4
Basememe Hook (Uniswap V4)
0x755776c51399f7EE15D47dDaf47347D26F5Ca840
Basememe Token Implementation
0xBbD5C86CcFAD9914B269647f80aD829D2cfA406e
#### Legacy deployment (migrated to Uniswap V3)
Contract
Address
Basememe Factory
0xc2B483AC7AcA92086e3269962Bc3A92604FaCe01
Bonding Curve Implementation
0x96575f9ab4eada2306faeaF870d8C3416409Ca43
Basememe Token Implementation (ERC 20)
0x75212a77483Db23D56edafC566c2cF4FCa1377A6
#### Tax Token deployment (migrated to Uniswap V2)
Tax-token contracts run alongside the V4 deployment as an independent factory. Tokens created here are ERC-20 with optional transfer/trade tax and graduate to Uniswap V2 (instead of V4). See [Tax Token](/fees-rewards/tax-token) and [Vaults](/vaults) for the user-facing concepts.
| Contract | Address |
| ----------------------------------------- | -------------------------------------------- |
| Basememe Tax Factory (Proxy) | `0xc5fdff6b45A3A5cEF7E72Edf98EC1b0Bc6f388Dd` |
| Basememe Tax Factory Trade Helper (Proxy) | `0x9A76e6e63DDfCf81f3B0eA5465fEE2c4267cbD2b` |
| Bonding Curve Implementation | `0x5165f54f015E9BD0be61508411c26eAC61f53E96` |
| Basememe Token Implementation (non-tax) | `0xe9E7a1e6ac04ac53511642297818CcaDea9eE143` |
| Basememe Tax Token Implementation | `0x5F5Fa2c25448a8a047FEDB872a10502A85d87D21` |
| Tax Processor Implementation | `0xdFbf27Fe18b213938eBf4DC613d51152C6490754` |
| Multi-DEX Router | `0x0a17BA18E8Dee6D9a3063B7b79DF295BE3985dec` |
**Vault Factory Contracts**
| Contract | Address |
| -------------------------- | -------------------------------------------- |
| SnowBall Vault Factory | `0x67DD5585bb8d5DC81bccEd0dC3f5E39E43c6ad1B` |
| BurnDividend Vault Factory | `0x4CDf43ba52A76fD3Cf2b241955D25B2Ca00979C1` |
| Gift Vault Factory | `0xC2D72baD33aE74Ff7A53cB8DA06B64cBA4cc00B6` |
| Split Vault Factory | `0x7a74745b49a8401fAe853aa06c2371273161F719` |
***
## ABI Reference
Specification of selected methods and events exposed by contracts for integration.
### Core Contracts (Uniswap V4)
#### Basememe Factory ABI
{% file src="/files/Bj6rvjlPBevqLFvrDixr" %}
#### Basememe Factory Trade Helper ABI
{% file src="/files/VVwGClfMNtSq1ms4ZUzF" %}
#### Bonding Curve Implementation ABI
{% file src="/files/QJjb4g0eQN847RcIu6gw" %}
#### Basememe Token Implementation (ERC 20) ABI
{% file src="/files/CYgzPxDldF32OCCCk6Y0" %}
### Tax Token Contracts (Uniswap V2)
#### Basememe Tax Factory ABI
{% file src="/files/4FD5Y20s8UbiBtaGEpKW" %}
#### Basememe Tax Token ABI
{% file src="/files/ZzNcKuQzF5H75hZJyVFG" %}
### Vault Factory ABIs
#### IVaultFactory Interface ABI
{% file src="/files/z7HLnNsCO2uEnXur6Be1" %}
#### SnowBall Vault Factory ABI
{% file src="/files/qlSvVrT60onTrWtF5cpU" %}
#### BurnDividend Vault Factory ABI
{% file src="/files/kfaxF2c1axDLUqoCkHBt" %}
#### Gift Vault Factory ABI
{% file src="/files/Ss2pyFEmIVKKaSZvPlfp" %}
#### Split Vault Factory ABI
{% file src="/files/a3WDAr6uikpuZNok7KwW" %}
# Creating a Coin
This guide covers how to create coins directly using the **Basememe Factory** contract.
**Basememe** **Factory** contract creates Coins, setting up Bonding Curves and initializing Uniswap pools. Coins created before December 5, 2025 are configured to use Uniswap V3 pools, while coins created on or after December 5, 2025 are using Uniswap V4 pools. Each **Coin** is configured to have a Bonding Curve and a Liquidity pool setup with a coin pair of its backing currency on each chain.
## Create Coin
To create a new coin with selected collateral pair, you send a transaction to call the `createBasememeTokenWithCollateral` method.
You may create token with following collateral:
Collateral Pair
Address
ETH
0x0000000000000000000000000000000000000000
USDC
0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
SOL
0x311935Cd80B76769bF2ecC9D8Ab7635b2139cf82
### Method Interface
// solidity interface
/// @notice Create a new token with required params
///
/// @param _name The name of the token
/// @param _symbol The symbol/ticker of the token
/// @param _tokenURI The IPFS URI of token metadata
/// @param _nonce Random number for salt generation
/// @param _signature The verify-able signature for token creation
/// @param _platformReferrer The Creator Referrer address to receive reward
/// @param _payoutRecipient The Creator address to receive reward
/// @param _tokenSalt Salt for deterministic CREATE2 deployment. Enables predictable token addresses.
/// @param _collateralToken Selected collateral pair for created token
///
/// @return token The address of the created token
function createBasememeTokenWithCollateral(
string memory _name,
string memory _symbol,
string memory _tokenURI,
uint256 _nonce,
bytes memory _signature,
address _platformReferrer,
address _payoutRecipient,
bytes32 _tokenSalt,
address _collateralToken
)
external
returns (address);
### Events
The factory emit an event upon successful coin creation
In addition, a `NewBasememeTokenCurveParams` event is emitted at creation time to publish the token's economic parameters, including the selected `collateralToken` and `v4LpFee`.
```solidity
/// @notice emitted when a new token is created
///
/// @param addr The token contract address
/// @param bondingCurve The Bonding Curve address of the token
/// @param creator The sender address of token creation
/// @param signature The signature used to create the token
/// @param platformReferrer The Creator Referrer address to receive reward
/// @param payoutReceipent The Creator address to receive reward
/// @param owner The owner address of token contract
/// @param nonce Random number for salt generation
/// @param name The name of the token
/// @param symbol The symbol/ticker of the token
/// @param tokenURI The IPFS URI of token metadata
/// @param version The BasememeToken version created
event NewBasememeToken(
address addr,
address bondingCurve,
address creator,
bytes signature,
address platformReferrer,
address payoutRecipient,
address owner,
uint256 nonce,
string name,
string symbol,
string tokenURI,
string version
);
```
***
## Create and Buy Coin
To create and buy a new coin with a selected collateral pair, you send a transaction to call the `createBasememeTokenAndBuyWithCollateral` method.
You may create token with following collateral:
Collateral Pair
Address
ETH
0x0000000000000000000000000000000000000000
USDC
0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
SOL
0x311935Cd80B76769bF2ecC9D8Ab7635b2139cf82
### Method Interface
```solidity
// solidity interface
/// @notice Create a new token and buy upon creation with required params
///
/// @param _name The name of the token
/// @param _symbol The symbol/ticker of the token
/// @param _tokenURI The IPFS URI of token metadata
/// @param _nonce Random number for salt generation
/// @param _collateralAmountIn The exact amount of collateral to spend (before fees)
/// @param _tokenAmountMin Min expected amount of token to receive
/// @param _signature The verify-able signature for token creation
/// @param _platformReferrer The Creator Referrer address to receive reward
/// @param _payoutRecipient The Creator address to receive reward
/// @param _tokenSalt Salt for deterministic CREATE2 deployment. Enables predictable token addresses.
/// @param _collateralToken Selected collateral pair for created token
///
/// @return token The address of the created token
function createBasememeTokenAndBuyWithCollateral(
string memory _name,
string memory _symbol,
string memory _tokenURI,
uint256 _nonce,
uint256 _collateralAmountIn,
uint256 _tokenAmountMin,
bytes memory _signature,
address _platformReferrer,
address _payoutRecipient,
bytes32 _tokenSalt,
address _collateralToken
)
external
payable
returns (address);
```
**Payment notes**
* If `_collateralToken` is `ETH` (`address(0)`), send `msg.value == _collateralAmountIn`.
* If `_collateralToken` is an ERC20 collateral token (e.g. USDC / SOL), `msg.value` must be `0` and the caller must approve the Factory to spend `_collateralAmountIn` of the collateral token.
### Events
The factory emit `NewBasememeToken` event upon successful coin creation
In addition, a `NewBasememeTokenCurveParams` event is emitted at creation time to publish the token's economic parameters, including the selected `collateralToken` and `v4LpFee`.
```solidity
/// @notice emitted when a new token is created
///
/// @param addr The token contract address
/// @param bondingCurve The Bonding Curve address of the token
/// @param creator The sender address of token creation
/// @param signature The signature used to create the token
/// @param platformReferrer The Creator Referrer address to receive reward
/// @param payoutReceipent The Creator address to receive reward
/// @param owner The owner address of token contract
/// @param nonce Random number for salt generation
/// @param name The name of the token
/// @param symbol The symbol/ticker of the token
/// @param tokenURI The IPFS URI of token metadata
/// @param version The BasememeToken version created
event NewBasememeToken(
address addr,
address bondingCurve,
address creator,
bytes signature,
address platformReferrer,
address payoutRecipient,
address owner,
uint256 nonce,
string name,
string symbol,
string tokenURI,
string version
);
```
Successful purchase of new coin create will emit `Buy` event
```solidity
/// @notice emitted upon successful token purchase
///
/// @param buyer The token buyer address
/// @param token The purchased token address
/// @param tokenAmount The amount of token purhased
/// @param collateralAmount The amount of collateral used to purchase token (depends on the coin's selected collateral pair)
/// @param refund The amount of collateral refunded to buyer if there's leftover
/// @param tradeFee The amount of fee collected by platform for token purchase
/// @param curveProgressBps The updated Bonding Curve progress basis points for token
/// @param virtualCollateralReserves The updated virtual collateral reserves amount in Bonding Curve stage
/// @param virtualTokenReserves The updated virtual token reserves amount in Bonding Curve stage
/// @param collateralReserves The updated real collateral reserves amount in Bonding Curve stage
/// @param tokenReserves The updated real token reserves amount in Bonding Curve stage
event Buy(
address indexed buyer,
address indexed token,
uint256 tokenAmount,
uint256 collateralAmount,
uint256 refund,
uint256 tradeFee,
uint256 curveProgressBps,
uint256 virtualCollateralReserves,
uint256 virtualTokenReserves,
uint256 collateralReserves,
uint256 tokenReserves
);
```
***
## Create Coin (Advanced Mode)
Advanced mode lets creators customize the coin’s funding target and token allocation at creation time. To create an advanced-mode coin with a selected collateral pair, call `createBasememeTokenDynamicWithCollateral`.
### Method Interface
```solidity
/// @notice Create a new token using advanced parameters (dynamic-create) and a selected collateral pair.
///
/// @param targetRaise The funding target (in the selected collateral token's units).
function createBasememeTokenDynamicWithCollateral(
string memory _name,
string memory _symbol,
string memory _tokenURI,
uint256 _nonce,
bytes memory _signature,
address _platformReferrer,
address _payoutRecipient,
bytes32 _tokenSalt,
address _collateralToken,
uint256 targetRaise
)
external
returns (address);
```
Advanced mode also supports an optional vesting allocation via an additional overload:
```solidity
/// @notice Create a new token using advanced parameters (dynamic-create) with an optional vesting allocation.
///
/// @param lockBps Vesting allocation in basis points (bps).
/// @param lockupDuration Lockup duration in seconds.
/// @param vestingDuration Vesting duration in seconds.
/// @param lockAdmin The admin address for the vesting schedule.
function createBasememeTokenDynamicWithCollateral(
string memory _name,
string memory _symbol,
string memory _tokenURI,
uint256 _nonce,
bytes memory _signature,
address _platformReferrer,
address _payoutRecipient,
bytes32 _tokenSalt,
address _collateralToken,
uint256 targetRaise,
uint16 lockBps,
uint64 lockupDuration,
uint64 vestingDuration,
address lockAdmin
)
external
returns (address);
```
### Events
In addition to `NewBasememeToken` and `NewBasememeTokenCurveParams`, advanced-mode creation emits `NewBasememeTokenDynamicParams` to publish the selected/derived advanced parameters for indexers and integrators.
```solidity
/// @notice Emitted when an advanced-mode token is created, including derived parameters.
event NewBasememeTokenDynamicParams(
address indexed addr,
address indexed bondingCurve,
bytes32 indexed profileId,
uint256 targetRaise,
uint16 sellBps,
uint256 lockAmount,
uint256 virtualTokenReservesInitial,
uint256 virtualCollateralReservesInitial,
uint256 endPriceNum,
uint256 endPriceDen,
int24 upperBelow,
int24 lowerAbove,
int24 lowBelowTick,
uint256 pairedToMigrateMin
);
```
***
## Create Coin (ETH Pair only)
To create a new coin that is paired with ETH only, you send a transaction to call the `createBasememeToken` method. For USDC / SOL collateral pairs, use `createBasememeTokenWithCollateral` instead.
### Method Interface
// solidity interface
/// @notice Create a new token with required params
///
/// @param _name The name of the token
/// @param _symbol The symbol/ticker of the token
/// @param _tokenURI The IPFS URI of token metadata
/// @param _nonce Random number for salt generation
/// @param _signature The verify-able signature for token creation
/// @param _platformReferrer The Creator Referrer address to receive reward
/// @param _payoutRecipient The Creator address to receive reward
/// @param _tokenSalt Salt for deterministic CREATE2 deployment. Enables predictable token addresses.
///
/// @return token The address of the created token
function createBasememeToken(
string memory _name,
string memory _symbol,
string memory _tokenURI,
uint256 _nonce,
bytes memory _signature,
address _platformReferrer,
address _payoutRecipient,
bytes32 _tokenSalt
)
external
returns (address);
### Events
The factory emit an event upon successful coin creation
```solidity
/// @notice emitted when a new token is created
///
/// @param addr The token contract address
/// @param bondingCurve The Bonding Curve address of the token
/// @param creator The sender address of token creation
/// @param signature The signature used to create the token
/// @param platformReferrer The Creator Referrer address to receive reward
/// @param payoutReceipent The Creator address to receive reward
/// @param owner The owner address of token contract
/// @param nonce Random number for salt generation
/// @param name The name of the token
/// @param symbol The symbol/ticker of the token
/// @param tokenURI The IPFS URI of token metadata
/// @param version The BasememeToken version created
event NewBasememeToken(
address addr,
address bondingCurve,
address creator,
bytes signature,
address platformReferrer,
address payoutRecipient,
address owner,
uint256 nonce,
string name,
string symbol,
string tokenURI,
string version
);
```
***
## Create and Buy Coin (ETH Pair only)
To create and buy a new coin that is paired with ETH only, you send a transaction to call the `createBasememeTokenAndBuy` method. For USDC / SOL collateral pairs, use `createBasememeTokenAndBuyWithCollateral` instead.
### Method Interface
```solidity
// solidity interface
/// @notice Create a new token and buy upon creation with required params
///
/// @param _name The name of the token
/// @param _symbol The symbol/ticker of the token
/// @param _tokenURI The IPFS URI of token metadata
/// @param _nonce Random number for salt generation
/// @param _tokenAmountMin Min expected amount of token to receive
/// @param _signature The verify-able signature for token creation
/// @param _platformReferrer The Creator Referrer address to receive reward
/// @param _payoutRecipient The Creator address to receive reward
/// @param _tokenSalt Salt for deterministic CREATE2 deployment. Enables predictable token addresses.
///
/// @return token The address of the created token
function createBasememeTokenAndBuy(
string memory _name,
string memory _symbol,
string memory _tokenURI,
uint256 _nonce,
uint256 _tokenAmountMin,
bytes memory _signature,
address _platformReferrer,
address _payoutRecipient,
bytes32 _tokenSalt
)
external
payable
returns (address);
```
### Events
The factory emit `NewBasememeToken` event upon successful coin creation
```solidity
/// @notice emitted when a new token is created
///
/// @param addr The token contract address
/// @param bondingCurve The Bonding Curve address of the token
/// @param creator The sender address of token creation
/// @param signature The signature used to create the token
/// @param platformReferrer The Creator Referrer address to receive reward
/// @param payoutReceipent The Creator address to receive reward
/// @param owner The owner address of token contract
/// @param nonce Random number for salt generation
/// @param name The name of the token
/// @param symbol The symbol/ticker of the token
/// @param tokenURI The IPFS URI of token metadata
/// @param version The BasememeToken version created
event NewBasememeToken(
address addr,
address bondingCurve,
address creator,
bytes signature,
address platformReferrer,
address payoutRecipient,
address owner,
uint256 nonce,
string name,
string symbol,
string tokenURI,
string version
);
```
Successful purchase of new coin create will emit `Buy` event
```solidity
/// @notice emitted upon successful token purchase
///
/// @param buyer The token buyer address
/// @param token The purchased token address
/// @param tokenAmount The amount of token purhased
/// @param collateralAmount The amount of collateral used to purchase token (depends on the coin's selected collateral pair)
/// @param refund The amount of collateral refunded to buyer if there's leftover
/// @param tradeFee The amount of fee collected by platform for token purchase
/// @param curveProgressBps The updated Bonding Curve progress basis points for token
/// @param virtualCollateralReserves The updated virtual collateral reserves amount in Bonding Curve stage
/// @param virtualTokenReserves The updated virtual token reserves amount in Bonding Curve stage
/// @param collateralReserves The updated real collateral reserves amount in Bonding Curve stage
/// @param tokenReserves The updated real token reserves amount in Bonding Curve stage
event Buy(
address indexed buyer,
address indexed token,
uint256 tokenAmount,
uint256 collateralAmount,
uint256 refund,
uint256 tradeFee,
uint256 curveProgressBps,
uint256 virtualCollateralReserves,
uint256 virtualTokenReserves,
uint256 collateralReserves,
uint256 tokenReserves
);
```
## Additional Info
There're 2 params in both create token method that need extra attention:
* `_tokenURI` : All the metadata about created coins are stored on IPFS. You need to upload your image and the meta of your token to IPFS following example below:
```json
{
name: "My Base Memecoin",
description: "Base for everyone!",
symbol: "MYBASECOIN",
image: "ipfs://CID/base_coin.png",
website: "https://example.com",
x: "https://x.com/my_base_coin",
telegram: "https://t.me/my_base_coin",
}
```
* `_signature` : For the moment, there's no signature required to create a coin using Basememe Factory, pass in empty bytes value for \_signature will do the job.
# Trading Coins
This guide covers how to trade coins created through **Basememe** **Factory** on both Bonding Curve stage and Post graduation stage.
During Bonding Curve stage Coins trading happens through **Basememe** **Factory** contract whereas after graduated, coins trading will move to Liquidity pool (DEX). Check detailed info about trading in both stage below:
* [Bonding Curve Stage Trading](/for-developers/trading-coins/bonding-curve-stage-trading)
* [Factory Trade Helper (ETH In / ETH Out)](/for-developers/trading-coins/factory-trade-helper)
* [After Graduation Stage Trading](/for-developers/trading-coins/after-graduation-stage-trading)
# Bonding Curve Stage Trading
This guide covers coin trading during the Bonding Curve stage which is executed through the **Basememe Factory** contract.
Coins can be configured with different collateral pairs on Base (ETH / USDC / SOL). The trading flow depends on whether a coin uses native ETH collateral (`tokenToCollateralToken(token) == address(0)`) or an ERC20 collateral token.
## Buy Coins with Exact Collateral Value
The `buyExactInWithCollateral` method accepts a specified collateral amount and buys the maximum possible number of coins for that input.
### Method Interface
// solidity interface
/// @notice Buy maximum coin with specified collateral amount
///
/// @param _token The token contract address
/// @param _collateralAmountIn The amount of collateral to spend on buying token
/// @param _amountOutMin The minimum amount of token expected to receive for collateral amount sending in
/// @param _tradeReferrer The Trade Referrer address to receive reward
function buyExactInWithCollateral(
address _token,
uint256 _collateralAmountIn,
uint256 _amountOutMin,
address _tradeReferrer
)
external
payable;
**Payment notes**
* For ETH-collateral coins, send `msg.value == _collateralAmountIn`.
* For ERC20-collateral coins (e.g. USDC / SOL), `msg.value` must be `0` and the caller must approve the Factory to spend `_collateralAmountIn` of the collateral token.
### Events
A `Buy` event will be emitted upon successful coin purchase.
```solidity
/// @notice emitted upon successful token purchase during Bonding Curve stage
///
/// @param buyer The token buyer address
/// @param token The purchased token address
/// @param tokenAmount The amount of token purhased
/// @param collateralAmount The amount of collateral used to purchase token (depends on the coin's selected collateral pair)
/// @param refund The amount of collateral refunded to buyer if there's leftover
/// @param tradeFee The amount of fee collected by platform for token purchase
/// @param curveProgressBps The updated Bonding Curve progress basis points for token
/// @param virtualCollateralReserves The updated virtual collateral reserves amount in Bonding Curve stage
/// @param virtualTokenReserves The updated virtual token reserves amount in Bonding Curve stage
/// @param collateralReserves The updated real collateral reserves amount in Bonding Curve stage
/// @param tokenReserves The updated real token reserves amount in Bonding Curve stage
event Buy(
address indexed buyer,
address indexed token,
uint256 tokenAmount,
uint256 collateralAmount,
uint256 refund,
uint256 tradeFee,
uint256 curveProgressBps,
uint256 virtualCollateralReserves,
uint256 virtualTokenReserves,
uint256 collateralReserves,
uint256 tokenReserves
);
```
***
## Buy Coins with Exact Collateral Value (ETH Pair Only)
The `buyExactIn` method is the legacy ETH-only exact-in entrypoint. It only works for coins whose collateral pair is native ETH and will revert for coins that use ERC20 collateral (e.g. USDC / SOL). For multi-collateral support, use `buyExactInWithCollateral`.
### Method Interface
// solidity interface
/// @notice Buy maximum coin with specified collateral amount
///
/// @param _token The token contract address
/// @param _amountOutMin The minimum amount of token expected to receive for collateral amount sending in
/// @param _tradeReferrer The Trade Referrer address to receive reward
function buyExactIn(
address _token,
uint256 _amountOutMin,
address _tradeReferrer
)
external
payable;
### Events
A `Buy` event will be emitted upon successful coin purchase.
```solidity
/// @notice emitted upon successful token purchase during Bonding Curve stage
///
/// @param buyer The token buyer address
/// @param token The purchased token address
/// @param tokenAmount The amount of token purhased
/// @param collateralAmount The amount of collateral used to purchase token (depends on the coin's selected collateral pair)
/// @param refund The amount of collateral refunded to buyer if there's leftover
/// @param tradeFee The amount of fee collected by platform for token purchase
/// @param curveProgressBps The updated Bonding Curve progress basis points for token
/// @param virtualCollateralReserves The updated virtual collateral reserves amount in Bonding Curve stage
/// @param virtualTokenReserves The updated virtual token reserves amount in Bonding Curve stage
/// @param collateralReserves The updated real collateral reserves amount in Bonding Curve stage
/// @param tokenReserves The updated real token reserves amount in Bonding Curve stage
event Buy(
address indexed buyer,
address indexed token,
uint256 tokenAmount,
uint256 collateralAmount,
uint256 refund,
uint256 tradeFee,
uint256 curveProgressBps,
uint256 virtualCollateralReserves,
uint256 virtualTokenReserves,
uint256 collateralReserves,
uint256 tokenReserves
);
```
***
## Buy Exact Coin Amount
The `buyExactOut` method allows the buyer to specify the exact number of coins to purchase, while setting a maximum collateral amount willing to spend.
**Payment notes**
* For ETH-collateral coins, send your max as `msg.value` and set `_maxCollateralAmount` accordingly.
* For ERC20-collateral coins (e.g. USDC / SOL), do not send ETH (`msg.value` should be `0`) and approve the Factory to spend up to `_maxCollateralAmount` of the collateral token.
### Method Interface
```solidity
// solidity interface
/// @notice Buy exact amount of coin
///
/// @param _token The token contract address
/// @param _tokenAmount The amount of token expect to receive
/// @param _maxCollateralAmount The maximum amount of collateral expected to spent
/// @param _tradeReferrer The Trade Referrer address to receive reward
function buyExactOut(
address _token,
uint256 _tokenAmount,
uint256 _maxCollateralAmount,
address _tradeReferrer
)
external
payable;
```
### Events
A `Buy` event will be emitted upon successful coin purchase.
```solidity
/// @notice emitted upon successful token purchase during Bonding Curve stage
///
/// @param buyer The token buyer address
/// @param token The purchased token address
/// @param tokenAmount The amount of token purhased
/// @param collateralAmount The amount of collateral used to purchase token (depends on the coin's selected collateral pair)
/// @param refund The amount of collateral refunded to buyer if there's leftover
/// @param tradeFee The amount of fee collected by platform for token purchase
/// @param curveProgressBps The updated Bonding Curve progress basis points for token
/// @param virtualCollateralReserves The updated virtual collateral reserves amount in Bonding Curve stage
/// @param virtualTokenReserves The updated virtual token reserves amount in Bonding Curve stage
/// @param collateralReserves The updated real collateral reserves amount in Bonding Curve stage
/// @param tokenReserves The updated real token reserves amount in Bonding Curve stage
event Buy(
address indexed buyer,
address indexed token,
uint256 tokenAmount,
uint256 collateralAmount,
uint256 refund,
uint256 tradeFee,
uint256 curveProgressBps,
uint256 virtualCollateralReserves,
uint256 virtualTokenReserves,
uint256 collateralReserves,
uint256 tokenReserves
);
```
***
## Sell Exact Coin Amount
The `sellExactIn` method accepts the exact number of coins to sell and receives at least the minimum expected collateral amount in return. The collateral received depends on the coin's selected collateral pair (ETH / USDC / SOL).
```solidity
// solidity interface
/// @notice Sell exact amount of coin
///
/// @param _token The token contract address
/// @param _tokenAmount The amount of token to sell
/// @param _amountCollateralMin The minimum amount of collateral expected in return
/// @param _traderReferrer The Trade Referrer address to receive reward
function sellExactIn(
address _token,
uint256 _tokenAmount,
uint256 _amountCollateralMin,
address _tradeReferrer
)
external;
```
### Events
A `Sell` event will be emitted upon successful coin sale.
```solidity
/// @notice emitted upon successful token sale during Bonding Curve stage
///
/// @param seller The token seller address
/// @param token The sold token address
/// @param tokenAmount The amount of token sold
/// @param collateralAmount The amount of collateral received upon token sale
/// @param tradeFee The amount of fee collected by platform for token sale
/// @param curveProgressBps The updated Bonding Curve progress basis points for token
/// @param virtualCollateralReserves The updated virtual collateral reserves amount in Bonding Curve stage
/// @param virtualTokenReserves The updated virtual token reserves amount in Bonding Curve stage
/// @param collateralReserves The updated real collateral reserves amount in Bonding Curve stage
/// @param tokenReserves The updated real token reserves amount in Bonding Curve stage
event Sell(
address indexed seller,
address indexed token,
uint256 tokenAmount,
uint256 collateralAmount,
uint256 tradeFee,
uint256 curveProgressBps,
uint256 virtualCollateralReserves,
uint256 virtualTokenReserves,
uint256 collateralReserves,
uint256 tokenReserves
);
```
***
## Sell Coins for Exact Collateral Value
The `sellExactOut` method accepts the exact collateral amount to receive upon coin sale, with the required coin amount (up to a maximum) specified. The collateral received depends on the coin's selected collateral pair (ETH / USDC / SOL).
```solidity
// solidity interface
/// @notice Sell token for exact amount of collateral
///
/// @param _token The token contract address
/// @param _tokenAmountMax The maximum amount of token to sell
/// @param _amountCollateral The exact amount of collateral expected in return
/// @param _traderReferrer The Trade Referrer address to receive reward
function sellExactOut(
address _token,
uint256 _tokenAmountMax,
uint256 _amountCollateral,
address _tradeReferrer
)
external;
```
### Events
A `Sell` event will be emitted upon successful coin sale.
```solidity
/// @notice emitted upon successful token sale during Bonding Curve stage
///
/// @param seller The token seller address
/// @param token The sold token address
/// @param tokenAmount The amount of token sold
/// @param collateralAmount The amount of collateral received upon token sale
/// @param tradeFee The amount of fee collected by platform for token sale
/// @param curveProgressBps The updated Bonding Curve progress basis points for token
/// @param virtualCollateralReserves The updated virtual collateral reserves amount in Bonding Curve stage
/// @param virtualTokenReserves The updated virtual token reserves amount in Bonding Curve stage
/// @param collateralReserves The updated real collateral reserves amount in Bonding Curve stage
/// @param tokenReserves The updated real token reserves amount in Bonding Curve stage
event Sell(
address indexed seller,
address indexed token,
uint256 tokenAmount,
uint256 collateralAmount,
uint256 tradeFee,
uint256 curveProgressBps,
uint256 virtualCollateralReserves,
uint256 virtualTokenReserves,
uint256 collateralReserves,
uint256 tokenReserves
);
```
# Factory Trade Helper (ETH In / ETH Out)
This guide covers Bonding Curve stage trading through the **Basememe Factory Trade Helper** contract.
Coins on Base.meme can be created with different collateral pairs (ETH / USDC / SOL). For coins that use an ERC20 collateral token (e.g. USDC / SOL), interacting with the Factory directly requires the caller to hold and approve that collateral token.
The Trade Helper provides a simplified interface that lets callers trade using **ETH only**:
* **Buy:** pay in ETH, receive the coin
* **Sell:** pay in the coin, receive ETH
Internally, the helper swaps between ETH and the coin’s configured collateral token, then calls the Factory.
## Quote Methods
These methods return the coin’s configured collateral token and an estimated conversion amount between ETH and that collateral token.
```solidity
function quoteEthToCollateralForToken(address token, uint256 ethIn)
external
returns (address collateralToken, uint256 collateralOut);
function quoteCollateralToEthForToken(address token, uint256 collateralIn)
external
returns (address collateralToken, uint256 ethOut);
```
## Trading Methods
### Buy with ETH
```solidity
function buyWithEth(address token, uint256 funds, uint256 minTokenOut, address tradeReferrer)
external
payable
returns (uint256 tokenOut, uint256 refundOut);
```
* `funds` must match `msg.value`.
* `refundOut` is any leftover ETH refunded back to the caller (e.g. due to fee/price movement or swap output variance).
### Sell for ETH
```solidity
function sellForEth(address token, uint256 tokenAmountIn, uint256 minEthOut, address tradeReferrer)
external
returns (uint256 ethOut);
```
The caller must approve the helper to transfer `tokenAmountIn` of the coin before selling.
# After Graduation Stage Trading
This guide covers coin trading after the graduation stage in Liquidity pools (DEX), executed through the Uniswap protocol.
## Uniswap Protocol (V3 / V4)
Coins created before December 5, 2025 are migrated to Uniswap V3 pools, while coins created on or after December 5, 2025 are migrated to Uniswap V4 pools. In both cases, post-graduation trading happens through the respective Uniswap protocol.
For swapping (trading) on Uniswap V3 protocol, kindly refer to [V3 swap documentation](https://docs.uniswap.org/contracts/v3/reference/periphery/interfaces/ISwapRouter#functions) for detail. For Uniswap V4, please refer to [V4 swap documentation](https://docs.uniswap.org/contracts/v4/quickstart/swap) for detail.
### Trade Referrer via Hook Data (Uniswap V4)
For coins traded on Uniswap V4 pools, Base.meme integrates with a custom hook contract. When executing swaps against these pools, integrators can encode a trader referrer address inside the Uniswap V4 `hookData` field. This address will be treated as the Trade Referrer for that trade, and the share of LP fees allocated to trade referrers (see the [Fee Structure](/fees-rewards/fee-structure)) will be assigned to this address through Base.meme's Reward Protocol.
The hook only treats `hookData` as a valid Trade Referrer when it contains exactly one ABI-encoded address (32 bytes). In practice, this means:
* To set a Trade Referrer, set `hookData` to the ABI encoding of the desired referrer address (one address, 32 bytes).
* If `hookData` is empty or its length is not 32 bytes, the Trade Referrer is considered unset and no trade referrer rewards are allocated for that swap.
# Migrating Coins
This guide covers how to migrate graduated coins to Liquidity pool (DEX) using the **Basememe Factory** contract.
## Migrate Graduated Coin
To migrate a graduated coin, you send a transaction to call the `migrate` method.
### Method Interface
```solidity
// solidity interface
/// @notice Migrate a graduated token to Liquidity pool (DEX)
///
/// @param _token The graduated token address
function migrate(address _token) external nonReentrant;
```
### Events
Successful migration will emit a `Migrated` event.
```solidity
/// @notice emitted when a graduated token is migrated
///
/// @param addr The token contract address
event Migrated(
address token,
uint256 tokenId,
uint128 liquidity,
uint256 amount0,
uint256 amount1,
uint256 migrationFee
);
```
# Claiming Market Rewards
This guide explains how to claim secondary market rewards through a coin's Bonding Curve contract after it has migrated to Uniswap. For coins using Uniswap V3, LP fees must be actively pulled from the Uniswap V3 pool into Base.meme’s Reward Protocol via the method below. For coins using Uniswap V4, LP fees are automatically forwarded into the Reward Protocol on each trade; recipients then claim from the Reward Protocol as usual.\
\
**Note:** For coin's Bonding Curve stage reward, it will automatically deposit into Base.meme's Reward Protocol. No additional step required before reward recipient claim it from Base.meme.
### Claim Secondary Market Reward (Uniswap V3)
For coins that use Uniswap V3 pools (created before December 5, 2025), the `claimSecondaryRewards` method withdraws LP fees from the Uniswap V3 pool and deposits them into Base.meme's Reward Protocol according to the defined [reward structure](/fees-rewards/rewards-on-base-meme). After this step, reward recipients can claim their rewards from Base.meme’s Reward Protocol like other rewards.
### Method Interface
```solidity
// solidity interface
/// @notice Migrate a graduated token to Liquidity pool (DEX)
///
/// @param pushEthRewards Whether to automatically transfer ETH or native token rewards into receipient wallet
function claimSecondaryRewards(bool pushEthRewards) external;
```
### Events
Upon successful claim a `LiquidityRewardsDistributed` event will be emitted
```solidity
/// @notice emitted when claim secondary reward invoked
///
/// @param payoutRecipient The reward receiving address, usually creator
/// @param platformReferrer The Trade Referrer reward receiving address, if applicable
/// @param protocolRewardRecipient The platform fee receiving address
event LiquidityRewardsDistributed(
address indexed payoutRecipient,
address indexed platformReferrer,
address protocolRewardRecipient,
LiquidityRewards liquidityRewards
);
/// @notice The LiquidityRewards type
///
/// @params totalAmountCurrency The total collateral amount claimed
/// @params totalAmountCoin The total Coin amouint claimed
/// @params creatorPayoutAmountCurrency The total collateral amount for creator
/// @params creatorPayoutAmountCoin The total coin amount for creator
/// @params platformReferrerAmountCurrency The total collateral amount for Trade Referrer
/// @params platformReferrerAmountCoin The total coin amount for Trade Referrer
/// @params protocolAmountCurrency The total collateral amount for platform
/// @params protocolAmountCoin The total coin amount for platform
struct LiquidityRewards {
uint256 totalAmountCurrency;
uint256 totalAmountCoin;
uint256 creatorPayoutAmountCurrency;
uint256 creatorPayoutAmountCoin;
uint256 platformReferrerAmountCurrency;
uint256 platformReferrerAmountCoin;
uint256 protocolAmountCurrency;
uint256 protocolAmountCoin;
}
```
# Utils
This guide covers additional helper methods for calculations and state checks, such as coin purchase/sale estimation, Bonding Curve progress and etc. These method shall execute through individual coin's Bonding Curve contract.
## Estimate Receiving Amount with Fixed Input Amount
The `getAmountOutAndFee` method estimate the amount to be receive and fee to be paid by specifying an exact input amount. For example, estimating coin amount to be receive with a fixed collateral amount or collateral amount to be receive with specific coin amount.
This method usually used in conjunction with `buyExactIn` and `sellExactIn` method during trading action in Bonding Curve stage.
### Method Interface
```solidity
// solidity interface
/// @notice Estimate amount to receive & fee to pay for an fixed input amount during Bonding Curve stage
///
/// @param _amountIn The fixed input amount of coin/collateral
/// @param _reserveIn The virtual reserve amount of input type
/// @param _reserveOut The virtual reserve amount of output type
/// @param _paymentTokenIsIn The _amountIn is collateral or not
///
/// @return amountOut The estimated return coin/collateral amount
/// @return fee The platform fee charged
function getAmountOutAndFee(
uint256 _amountIn,
uint256 _reserveIn,
uint256 _reserveOut,
bool _paymentTokenIsIn
) external view returns (uint256 amountOut, uint256 fee);
```
***
## Estimate Input Amount with Fixed Receiving Amount
The `getAmountInAndFee` method estimate the input amount and fee to be paid by specifying an exact output amount. For example, estimating collateral amount to be pay with a fixed coin amount to be receive.
This method usually used in conjunction with `buyExactOut` and `sellExactOut` method during trading action in Bonding Curve stage.
### Method Interface
```solidity
// solidity interface
/// @notice Estimate input amount & fee to pay for an fixed output amount during Bonding Curve stage
///
/// @param _amountOut The fixed output amount of coin/collateral
/// @param _reserveIn The virtual reserve amount of output type
/// @param _reserveOut The virtual reserve amount of input type
/// @param _paymentTokenIsIn The _amountIn is collateral or not
///
/// @return amountIn The requred input coin/collateral amount
/// @return fee The platform fee charged
function getAmountInAndFee(
uint256 _amountOut,
uint256 _reserveIn,
uint256 _reserveOut,
bool _paymentTokenIsOut
) external view returns (uint256 amountIn, uint256 fee);
```
***
## Get Coin Bonding Curve Contract
The `tokenToBondingCurve` mapping in **Basememe Factory** is available to retrieve respective Token's Bonding Curve contract and return it address.
### Method Interface
```solidity
// solidity interface
mapping(address => address) public tokenToBondingCurve;
```
***
## Get Coin Collateral Token
Each Bonding Curve stores the collateral token configured at coin creation. The `collateralToken` method returns the collateral token address.
* `address(0)` means the coin uses native ETH as collateral.
* Otherwise, it returns the ERC20 collateral token address (e.g. USDC / SOL on Base).
### Method Interface
```solidity
// solidity interface
function collateralToken() external view returns (address);
```
***
## Check Coin Bonding Curve Progress
The `getCurveProgressBps` method check coin's current Bonding Curve progress and return in basis point form.
### Method Interface
// solidity interface
/// @notice Get coin current bonding curve progress
///
/// @return progress BPS
function getCurveProgressBps() external view returns (uint256);
***
## Check Coin Market Cap
The `getMarketCap` method calculate and return coin's current market cap calculated in respective collateral token value. The market cap is only applicable to Bonding Curve stage.
### Method Interface
```solidity
// solidity interface
/// @notice Get coin current market cap in bonding curve
///
/// @return market cap in collateral token value
function getMarketCap() external view returns (uint256);
```
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4.5. Calculations: Any calculations of fees made by the Basememe Entities or affiliates in connection with your use of the Base.meme's Services are final and binding on you in the absence of Manifest Error.
### 5. Records
We keep your personal data to enable your continued use of the platform and Base.meme Services, including as may be required by law for tax and accounting purposes as well as compliance with other laws and regulations. You understand and agree that our use of and your rights related to your data are set forth in our [Privacy Notice](/legal/privacy-policy).
### 6. Accessing the Platform
6.1. To access the platform and Base.meme's Services, you must have the necessary equipment (such as a computer or smartphone) and access to the internet. You can access the platform and Base.meme's Services through the use of bots or otherwise as we may permit from time to time, as long as such access otherwise complies with all requirements and rules established in these Terms.
6.2. The use of the platform and other access methods may be subject to such additional terms as we require from time to time and which we will communicate to you.
### 7. Transactions
7.1. You acknowledge and agree that where you execute any Transaction with Improper Intent and/or in the case of Manifest Error, Base.meme is authorized by you (without any payment or penalty or liability due by Base.meme and provided that such action is in compliance with Applicable Law) to cancel/void such Transaction (to the extent possible), take such actions as Base.meme may reasonably deem fit and treat such Transaction as if it had never been entered into.
7.2. We may be required under these Terms or Applicable Law to share information about your activities on the platform with third parties. You acknowledge and agree that we are entitled to disclose such information.
### 8. Smart Contract Transactions
8.1. We do not represent or warrant that any actions by you on the platform or use of the Base.meme's Services will be completed successfully or within a specific time period. By accessing and using the platform and Base.meme's Services, you represent that you understand that smart contract transactions, like the ones conducted through the platform and Base.meme's Services, automatically execute and settle, and that blockchain-based systems are variable and transaction speeds may increase dramatically at any time.
8.2. You expressly agree that the Basememe Entities and affiliates are permitted, but not required, to keep a record of all Transaction information related to use of the platform and Base.meme's Services. You further agree that we may keep this information, if we collect it, for as long as it is required to fulfill its intended purpose or any other period of time as required by Applicable Law.
### 9. Material Interests and Conflicts
9.1. You understand and agree that neither your relationship with us nor any services we provide to you, nor any other matter, will give rise to any duties on our part or on the part of any Basememe Entity or affiliate, whether legal, equitable, fiduciary in nature, save as are expressly set out in these Terms. In particular, Basememe Entities and affiliates may from time to time act in more than one capacity, and in those capacities we may receive fees or commissions from more than one user (including you). You agree that we may act in such capacities and provide any other services or carry out any business with or for you, any other Basememe Entity or affiliate or any other user.
9.2. You understand and agree that, except as required under our [Privacy Notice](/legal/privacy-policy), the Basememe Entities and affiliates will not be required to: (i) have regard to any information known to us, which is or may be a material interest; (ii) disclose any such information to you; or (iii) use any such information for your benefit. You further acknowledge that from time to time we may receive general market information in the course of providing access to the platform and Base.meme's Services to you, which we may use in the ordinary course of our business.
9.3. We have established and maintain effective organizational and administrative arrangements with a view to taking all appropriate steps to identify and manage conflicts of interest between us and our users and relevant third parties, so as to prevent conflicts of interest from adversely affecting the interests of our users. We reserve the right at all times to decline to act for you where we are not able to manage a conflict of interest in any other way.
9.4. You understand that from time to time we may transact using the platform. We are under no obligation to disclose any of our transactions on the platform.
### 10. Transaction Limits
Your activity on the platform and use of the Base.meme's Services may be subject to limits that we shall determine from time to time in our sole discretion.
### 11. Security
11.1. You are responsible for taking appropriate action to protect your hardware and data from viruses and malicious software, and any inappropriate material. Except as provided by Applicable Law, you are responsible for backing up and maintaining duplicate copies of any information related to your use of the platform and Base.meme's Services. The Basememe Entities and affiliates are not responsible for any claim or losses resulting from your failure to comply with this clause.
11.2. At all times, you, and anyone you permit to access the platform and Base.meme's Services using your Wallet (“Permitted Users”), shall maintain adequate security and control of all of the information used to access the platform and Base.meme's Services. You are responsible for taking the necessary security measures to protect such details, including by:
* a. strictly abiding by all of our mechanisms or procedures;
* b. never allowing remote access or sharing your computer and/or computer screen with someone else when you are logged into the platform or are using the Base.meme's Services;
* c. remembering that under no circumstances will we ask you to share any of your passwords or private key or seed phrases or 2-factor authentication codes or similar. You should never disclose these if asked.
11.3. You are solely responsible for keeping the information used to access the platform and Base.meme's Services secure against any attacks and unauthorized access.
11.4. It is important that you monitor your Activity History to ensure any unauthorized or suspicious activity on your account is identified. You agree that you are required to notify us as soon as possible of any suspicious activity involving the Wallet you use to access the platform and Base.meme's Services. You acknowledge that any Security Breach may result in unauthorized access to your Wallet by third parties and the loss or theft of any Digital Assets and/or funds from your Wallet and any associated Wallets or accounts.
11.5. If you suspect a Security Breach, you must ensure that:
* a. we are notified immediately and continue to be provided with accurate and up-to-date information throughout the duration of the Security Breach;
* b. you take any other steps that we may reasonably require to reduce, manage or report any Security Breach.
11.6. We reserve the right to request, and you agree to promptly provide, any and all information and documents we deem relevant or necessary in connection with an actual or suspected Security Breach. You further acknowledge and agree that we may provide such information to any third party that we deem necessary in order to investigate or resolve any Security Breach.
### 12. Privacy
12.1. Our collection and use of personal data in connection with these Terms, your access to the platform, and use of the Base.meme's Services is as provided in our [Privacy Notice](/legal/privacy-policy) (as updated from time to time). You acknowledge that we may process personal data in relation to you, that you have provided to us, or we have collected from you in connection with these Terms and our Privacy Notice. Your personal data will be processed in accordance with the Privacy Notice, which shall form part of these Terms.
12.2. You represent and warrant that:
* a. you acknowledge that you have read, understood, and agree to our [Privacy Notice](/legal/privacy-policy).
* b. our business changes regularly and our Privacy Notice will change also. Therefore, if from time to time we provide you with a replacement version of the Privacy Notice, you will promptly read the Privacy Notice.
### 13. Amending the Terms
13.1. We can make changes to these Terms and any terms and conditions incorporated by reference at any time and your continued use of the platform and Base.meme's Services constitutes your consent to such changes. Changes to these Terms will be published on our website and may also be notified to users by such other means as Basememe Entities and affiliates determine in their sole discretion. You acknowledge and agree that you are required to check these Terms periodically to ensure that you are aware of any and all changes.
13.2. If you do not wish to accept these Terms or any future modified Terms, you must cease use of the platform and Base.meme's Services. Your continued access to or use of the platform and Base.meme's Services shall be deemed acceptance of the updated Terms.
### 14. Termination, Suspensions, Restrictions
14.1. We may at any time modify or discontinue, temporarily or permanently, any portion or feature of the platform or Base.meme's Services. In particular, we may: (i) refuse to complete or block, cancel, or, where permitted by Applicable Law, reverse (to the extent possible) any action you have undertaken; (ii) terminate, suspend, or restrict your access to any or all of the platform and Base.meme's Services; (iii) refuse to transmit information or Instructions to third parties (including but not limited to third-party Wallet operators); and/or (iv) take whatever action we consider necessary, in each case with immediate effect and for any reason including, but not limited to where:
* a. you are not, or are no longer, eligible to use the platform and Base.meme's Services;
* b. we reasonably suspect that:
* i. the person connecting to the platform or Base.meme's Services with your Wallet is not you, or we suspect that you have been or will be using the platform or Base.meme's Services for any illegal, fraudulent, or unauthorized purposes;
* ii. information provided by you is wrong, untruthful, outdated, or incomplete;
* c. we reasonably consider that we are required to do so by Applicable Law, or any court or authority;
* d. we have determined or suspect:
* i. that you have breached these Terms;
* ii. that any activity is unauthorized, erroneous, fraudulent, or unlawful or we suspect the platform, Services or Wallet are being used as such;
* iii. there is any occurrence of money laundering, terrorist financing, fraud or any other crime in connection with your usage;
* e. your usage is subject to any pending, ongoing or threatened litigation or regulatory proceedings;
* f. you have taken any action that may circumvent our controls without our consent;
* g. there is any other valid reason which means we need to do so.
14.2. You acknowledge and agree that:
* a. the examples set out above are non-exhaustive; and
* b. our decision to terminate, suspend, or restrict access may be based on confidential criteria that are essential to our risk management and security protocols. We are under no obligation to disclose these to you.
14.3. Where we terminate, suspend, hold or restrict your access:
* a. if you have Transactions that are open, they may be closed by you or by us depending on the circumstances;
* b. you authorize us to deduct any unpaid costs and fees directly from assets in the Wallet you connected.
14.4. If we are informed and reasonably believe that any Digital Assets in your Wallet are stolen or not lawfully possessed by you (whether by error or otherwise), we may, but are not obligated to, terminate your usage of the platform and Services. Except where required by law, we will not become involved in any dispute relating to such assets or their origin.
### 15. Base.meme IP
All Base.meme's IP shall remain vested in Basememe Entities and their affiliates. At no point do users of the platform or Base.meme's Services obtain any right to Base.meme IP unless expressly provided by these Terms.
### 16. License of Base.meme's IP
We grant to you a non-exclusive license for the duration of these Terms, or until we suspend or terminate your usage of the platform and Base.meme's Services, whichever is sooner, to use the Base.meme IP, excluding the Base.meme's Trade Marks, solely as necessary to allow you to access and use the platform and Base.meme's Services for non-commercial personal use, in accordance with these Terms.
### 17. Licence of User IP
17.1. You grant to us a perpetual, irrevocable, royalty-free, worldwide and non-exclusive licence to use the User IP to the extent it:
* a. forms part of, or is necessary for the use of, any Created IP; and
* b. is necessary to allow us to provide you with access to the platform and Base.meme's Services.
17.2. The license granted by you under this clause includes our right to sub-license to a third party to the extent required to enable Basememe Entities and any affiliates to provide you with access to the platform and to enable use of any Base.meme's Services, or any part of them.
### 18. Created IP
18.1. The Created IP shall automatically vest in us from time to time on the date on which it is created.
18.2. You hereby assign to us (and agree to procure that any agents, representatives or contractors assign), with full title guarantee, title to all present and future rights and interest in the Created IP.
18.3. If requested to do so, you shall (and agree to procure that any agents, representatives or contractors shall), without charge to us, sign and/or execute all documents and do all such acts as we may require to perfect the assignments under this clause.
### 19. General
19.1. You agree and acknowledge that: (i) we are not responsible for any User Material (whether provided by you or by third parties) which may be used on, uploaded to or made available on the platform and Base.meme's Services, including user-generated Digital Assets; and (ii) use of any such User Material and user-generated Digital Assets is at your own risk and that we do not provide any warranties in relation to the same.
19.2. We shall have the right at our sole and absolute discretion to remove, modify or reject any content that you submit to, post, use or display on the Platform (including any User Material and user-generated Digital Assets) for any reason. We reserve the right to take any actions as we deem appropriate at our sole discretion, including giving a written warning to you, removing any User Material and user-generated Digital Assets, recovering damages or other monetary compensation from you, suspending or terminating your access to the platform and Base.meme's Services. We have the right to restrict or ban you from any and all future use of the platform and Base.meme's Services.
19.3. You agree that we may record any communications, electronic, by telephone, over video call, chat, VOIP or otherwise, that we have with you in relation to these Terms, and that any such record that we keep will constitute evidence of the communications between you and us. You agree that telephone conversations and video calls may be recorded so that we can respond to inquiries, ensure compliance with applicable laws, improve our services and provide customer support.
### 20. Prohibited Use
By using the platform and Base.meme's Services, including carrying out any Transaction, and without prejudice to any other restriction or limitation set out in these Terms, you agree that you will not:
* a. breach these Terms or any agreement entered into pursuant to them;
* b. use the platform and/or Base.meme's Services in a manner that violates our Prohibited Use Policies;
* c. use the platform and/or Base.meme's Services for commercial purposes, including transactions on behalf of other persons or entities, unless expressly agreed by us in writing;
* d. engage in market manipulation, including pump and dump schemes, wash trading, or any activity designed to control or artificially affect the price of any Digital Asset;
* e. engage in fraudulent activities, or cause us to suspect that you have done so;
* f. undertake activities that may result in disputes, chargebacks, penalties, or liability to any party;
* g. provide false, inaccurate or misleading information in connection with your use;
* h. use bots, spiders, deep links, or other tools to access or copy data from the platform in unauthorized ways;
* i. attempt unauthorized access, probe, scan or test vulnerabilities of the Platform;
* j. reverse-engineer or otherwise attempt to extract source code or intellectual property;
* k. copy, republish, or otherwise exploit any part of Base.meme's IP or services;
* l. spread malware, spyware, or any software designed to harm systems or users;
* m. use anonymizing proxies, spoof IPs, or manipulate system behaviors;
* n. create or purport to create any security interest over your user-generated Digital Assets;
* o. violate any Applicable Law or third party IP or privacy rights;
* p. access or attempt to access the platform or Services from any prohibited or sanctioned jurisdictions (including Cuba, Iran, North Korea, Syria, Russia).
### 21. Representations and Warranties
You hereby represent and warrant to us, at all times, the following:
* a. all decisions made in connection with these Terms were solely and exclusively based on your own judgement;
* b. you have full power, authority, and capacity to (i) access and use the platform and Base.meme's Services; and (ii) enter into and perform your obligations under these Terms;
* c. where participating in user-generated Digital Assets, you have independently assessed such assets and are using no more of your financial resources than is prudent and reasonable;
* d. all consents, approvals, and registrations required to use the platform and Services have been lawfully obtained;
* e. you either (i) have enforceable rights to use any images and IP uploaded to the platform, or (ii) have obtained all necessary permissions to do so;
* f. these Terms constitute valid and legally binding obligations enforceable against you;
* g. if you are a legal entity, you are duly incorporated and validly existing under your jurisdiction’s laws;
* h. your access and use of the platform and Services will not:
* i. breach your constitutional documents if you are a legal entity;
* ii. breach any instrument or agreement you are a party to; and
* iii. cause any party to breach any Applicable Law or legal decision.
### 22. Technology Disclaimers
22.1. The platform and Base.meme's Services are provided on an "as is" and "as available" basis without any representation or warranty, whether express or implied, to the maximum extent permitted by Applicable Law. We specifically disclaim any implied warranties of title, merchantability, fitness for a particular purpose, and non-infringement.
22.2. We do not warrant that access to the platform or Services will be continuous, uninterrupted, timely, or error-free. Delays, service interruptions, and time-sensitive transaction failures may occur.
22.3. Access may be suspended from time to time for scheduled or emergency maintenance. We make no guarantees regarding processing times for Transactions, which may vary due to blockchain conditions or other external factors.
22.4. Although we strive to ensure up-to-date content, we make no representations, warranties, or guarantees that the content on the platform is accurate, complete, or current.
22.5. Links to third-party websites are provided as a convenience. We do not control and are not responsible for the content or services available on any third-party sites.
22.6. You are responsible for obtaining the necessary network access to use the platform and Services, and for ensuring your devices are compatible. We do not guarantee operation across all devices and platforms.
### 23. Indemnity
23.1. You hereby undertake and agree to indemnify us and hold us harmless upon demand from and against any claims, suits, actions, demands, disputes, allegations, or investigations brought by any and all persons or entities, including third-parties, governmental authorities, and industry bodies, as well as all claims, liabilities, damages (actual and consequential), losses (including direct, indirect, or consequential), costs, and expenses, including all interest, penalties and legal or other reasonable attorneys' fees and professional costs ("Losses"), arising out of or in any way connected with:
* a. your access to or use of the platform and Base.meme's Services;
* b. your breach or alleged breach of these Terms;
* c. your contravention of any Applicable Law; and
* d. your violation of the rights (intellectual property or otherwise) of any third party.
23.2. You irrevocably and unconditionally agree to release us from any and all claims and demands (and waive any rights you may have now or in the future), arising directly or indirectly out of or in connection with any dispute you have with another user or third party, connected in any way with the platform, Base.meme's Services, or these Terms.
### 24. Liability
24.1. The Basememe Entities and affiliates are not responsible for any loss suffered by you or any third party, except where such loss arises solely and directly from our wilful misconduct or actual fraud. We are not liable for any loss related to user-generated Digital Assets.
24.2. Our total liability to you under any circumstance will not exceed the amount of fees you paid to us for the transaction giving rise to the claim. This amount shall represent full and final settlement of any claim.
24.3. You agree that we are unaware of your specific circumstances and that monetary damages are an adequate remedy. You are not entitled to remedies such as injunction or specific performance.
24.4. We are not liable for:
* a. direct or indirect losses arising from actions, delays, market fluctuations, technical failures, third-party behavior, or smart contract execution;
* b. loss of profits, opportunities, or business due to use or inability to use the platform;
* c. any error, Manifest Error, market volatility, or cancellation of a transaction;
* d. any claim brought more than one year after the cause of action arose.
24.5. We are not liable for malware, phishing, or spoofing attacks. You are responsible for using antivirus software and for protecting access credentials to your Wallet and devices.
### 25. Dispute Resolution; Arbitration
**PLEASE READ THIS SECTION CAREFULLY:** IT MAY SIGNIFICANTLY AFFECT YOUR LEGAL RIGHTS, INCLUDING YOUR RIGHT TO FILE A LAWSUIT IN COURT AND TO HAVE A JURY HEAR YOUR CLAIMS. IT CONTAINS PROCEDURES FOR MANDATORY BINDING ARBITRATION AND A CLASS ACTION WAIVER.
25.1. **Binding Arbitration.** Except for disputes where we seek injunctive or equitable relief related to intellectual property, you waive your rights to have Disputes adjudicated in court or before a jury. All Disputes must be resolved by binding arbitration.
25.2. **Informal Dispute Resolution.** You must notify us in writing of any Dispute within thirty (30) days of its arising. You agree to engage in a good faith informal resolution process, including at least one telephonic conference before proceeding to formal arbitration.
25.3. **No Class Actions.** All Disputes must be brought individually. Class arbitrations, class actions, and representative actions are strictly prohibited.
25.4. **Consolidated Arbitrations.** Arbitrations may be consolidated when appropriate, such as when they share common facts or legal issues.
25.5. **Mass Arbitrations.** If 25+ similar claims are filed, a batching procedure will apply. Selected test cases will go to arbitration first, followed by mediation. Claims not resolved may return to arbitration in batches or may be opted out for court filing.
25.6. **Severability.** If any part of this arbitration clause is found unenforceable, the rest will still apply. Waivers are enforceable to the extent permitted by law.
25.7. **Jurisdiction of Arbitrator.** The arbitrator shall have exclusive authority to determine the scope, validity, and arbitrability of any Dispute.
25.8. These arbitration provisions survive the termination of these Terms.
### 26. Contact
28.1. If you have questions, feedback, or complaints you can contact us via our Support team through
28.2. Where necessary, and in accordance with your [Privacy Notice](/legal/privacy-policy), we will contact you using the details you have provided to us or that we may reasonably find, such as via directly messaging you on X (formerly known as Twitter).
### 27. General Terms
* 27.1. You must comply with all Applicable Law, licensing requirements, and third-party rights, including data protection and anti-money laundering laws.
* 27.2. We may give notice to you electronically, including through Telegram or social media. You must provide notice to us as directed in these Terms.
* 27.3. Official announcements will be made on X (formerly Twitter) from the official Base.meme account.
* 27.4. These Terms constitute the whole agreement between you and the Basememe Entities and affiliates.
* 27.5. You may not assign your rights without our prior written consent. We may assign ours freely.
* 27.6. If any clause is found invalid, the remainder of the Terms remains in effect.
* 27.7. We may record communications with you, including calls and messages, as evidence and for support.
* 27.8. In case of conflict, the English version of the Terms prevails over any translations.
* 27.9. These Terms do not create third-party beneficiary rights.
* 27.10. Provisions that naturally survive termination will remain binding.
* 27.11. These Terms do not establish a partnership, joint venture, or agency relationship.
* 27.12. We are not liable for delay or failure to perform due to a Force Majeure Event.
* 27.13. No delay or omission in enforcing rights shall waive future enforcement.
* 27.14. We may set-off amounts you owe us; you must pay what you owe free from deductions or counterclaims.
* 27.15. If you receive another user’s information, you must keep it confidential and only use it lawfully.
* 27.16. If you breach these Terms, we may disclose the breach and related information for user safety.
* 27.17. You are responsible for determining and paying all applicable taxes related to your use of the platform and Services.
### 28. Definitions and Interpretation
In these Terms:
* 28.1. Clause headings and numbering are for convenience only and do not affect the meaning or interpretation.
* 28.2. “Include” and “including” mean without limitation.
* 28.3. Any obligation not to do something includes not permitting it to be done.
* 28.4. Words in the singular include the plural and vice versa; words referring to gender include all genders.
* 28.5. References to documents include any variations or amendments not in breach of these Terms.
* 28.6. In case of inconsistency:
* a. the Privacy Notice prevails over these Terms.
* b. these Terms prevail over any other referenced documents unless otherwise stated.
* 28.7. Capitalized terms shall have the meanings assigned in the Terms unless context requires otherwise.
### Defined Terms
* **Activity History:** The record of your Transactions and activity on the platform and Services.
* **Applicable Law:** All relevant laws, regulations, rules, and legal requirements in any jurisdiction applicable to the provision or use of the platform or Services.
* **Backed Digital Assets:** Digital Assets that claim to be backed or pegged to another asset, such as fiat, commodities, or other cryptocurrencies.
* **Claim:** Any dispute or legal controversy between you and Basememe Entities relating to these Terms, your use of the platform, or related non-contractual obligations.
* **Control:** Power to direct the affairs of an entity, including majority ownership, board appointment rights, or equivalent authority.
* **Digital Assets:** Digitally represented value stored and transferred via distributed ledger technologies, including cryptocurrencies, NFTs, and tokenized derivatives.
* **Force Majeure Event:** Unforeseeable circumstances that prevent us from fulfilling our obligations—e.g., natural disasters, war, pandemics, or major technical failures.
* **Improper Intent:** Behavior deemed fraudulent, abusive, including unfair advantages and market manipulation.
* **Intellectual Property Rights:** Includes copyrights, patents, trademarks, design rights, and any other similar rights worldwide.
* **List of Prohibited Countries:** High-risk jurisdictions such as Cuba, Iran, North Korea, Syria, and others under international sanctions.
* **Losses:** As defined in Clause 24.1, includes direct and indirect damages, costs, and legal fees.
* **Manifest Error:** Obvious mistakes in data or actions that are clear and indisputable.
* **Network Event:** Events on a blockchain (e.g., 51% attacks or chain reorganizations) that compromise Digital Asset records or control.
* **Privacy Notice:** The document outlining how we collect, use, and protect your personal data, located at .
* **Basememe Entity:** Basememe and other affiliated entities behind the platform and Services.
* **Base.meme IP:** All intellectual property owned or licensed by Basememe Entities related to the platform and Services.
* **the platform:** The digital interface and system through which users access Base.meme's Services.
* **Base.meme's Services:** Tools and offerings provided by Base.meme, such as digital asset creation, and trading.
* **Regulatory Authority:** Any relevant national or international regulator, court, tax authority, or government body.
* **Security Breach:** Any unauthorized access or cyberattack affecting you, or the Base.meme's Services.
* **Sites:** The website and all other online interfaces operated by Base.meme.
* **Terms:** The full Terms of Use agreement, including referenced documents and future amendments.
* **Trade Marks:** All logos, branding, and service marks used in connection with the platform.
* **Transaction:** The creation, buying, or selling of Digital Assets on or through the platform.
* **User-Created IP:** Intellectual property created by you using the platform, except for content created prior to acceptance of these Terms.
* **User-Generated Digital Asset:** A Digital Asset created by a user via Base.meme's Services.
* **User Materials:** All content (e.g., Digital Assets, posts, images) that you upload or create via the platform.
* **Wallet:** The digital wallet you connect to the platform.
* **Website:** The official Base.meme's website at
# Privacy Policy
Last updated: Oct 21, 2025
Thank you for visiting Base.meme (“Base.meme”, “Company”, “we”, “us”, or “our”). We are committed to protecting your personal information and your right to privacy. If you have any questions or concerns about our policy, or our practices with regards to your personal information, please contact us at
Please read this Privacy Notice carefully to understand our policies and practices regarding your information. If you do not agree with our policies and practices, please do not use our platform. By accessing or using our platform, you acknowledge and agree to the terms of this Privacy Notice.
We may update this Privacy Notice based upon evolving laws, regulations and industry standards, or as we may make changes to the platform. If we make changes that materially alter your privacy rights, we will take appropriate measures to inform you, consistent with the significance of the changes we make. If you disagree with the changes to this Privacy Notice, you should discontinue your access and use of the platform.
Our Site and the platform are not directed to, and we do not knowingly collect Personal Data from, anyone under the age of 18. If a parent or guardian becomes aware that his or her child has provided us with information, they should contact us. We will delete such information from our files as soon as reasonably practicable.
### Personal Data Controller
The term "Personal Data" as used in this policy, describes information that can be associated with a specific person and can identify that person. Personal Data does not include information that has been aggregated or anonymized so that a specific person can no longer be identified. Any reference to "Personal Data" in this Privacy Notice includes without limitation "Personal Data" as defined by the Data Protection Act 2018.
A Personal Data controller is a person or organisation who controls the collection, holding, processing or use of Personal Data, including a person or organisation who instructs another person or organisation to collect, hold, process, use, transfer or disclose Personal Data on his or her behalf.
### Types of Personal Data Collected
The types of Personal Data that we may collect from you or through third parties will depend on our interactions with you and may include:
* Financial information such as your wallet addresses;
* Transaction information such as the wallet addresses of senders and recipients of Digital Assets, activities on the platform, your inquiries and our responses;
* Usage Data which can include your IP address, your country of origin, the features of the browser or operating system utilised by you, how you use the platform, among other identifiers;
* Other personal data or commercial and/identification information that we, in our sole discretion, may deem necessary to comply with various applicable anti-money laundering laws and regulations.
We may also collect Personal Data about you from third parties and other sources such as publicly available sources of information.
We collect this information from you when you freely provide it on Base.meme or when you use the platform. We may also collect your Personal Data from third parties or publicly available sources as noted above.
Unless specified otherwise, all Personal Data requested by us is mandatory and failure to provide this Personal Data may make it impossible for you to access or use the platform. In cases where the platform specifically states that some Personal Data is not mandatory, users are free not to communicate this Personal Data without consequences to the availability or the functioning of the platform. Users who are uncertain about which Personal Data is mandatory may contact us for clarification.
### Information We Automatically Collect
When you visit Base.meme, we may automatically collect certain information about your device, including information about your web browser, IP address and/or domain name, IMEI or other device information, your login information, browser type and version, timezone setting, browser plug-in types and versions, operating systems and platforms, location information, and some of the cookies that are installed on your device using cookies and similar technologies. Additionally, as you browse the Site, we may collect information about the individual web pages or services that you view, what websites or search terms referred you to the Site, and information about how you interact with the Site.
### Cookies & Similar Technologies
We use cookies (small, often encrypted, text files that are stored on your computer or mobile device) and similar technologies ("Cookies") to provide you with certain functions on our Site and help collect data. This section explains how we use Cookies to collect information about the way you use our Site and how you can control them.
#### How We Use Cookies
We use Cookies to track how you use the platform by providing usage statistics. Cookies are also used to deliver our information (including updates) and allow account authentication to you based upon your browsing history and previous visits to the Site.
For the avoidance of doubt, we do not combine or link data or information gathered from Cookies with third party data for targeted advertising or advertising measurement purposes or sharing data collected about a particular end-user or device with a data broker.
#### Types of Cookies
We use both session Cookies (which expire once you close your web browser) and persistent Cookies (which stay on your device until you delete them). To make it easier for you to understand why we need them, the Cookies we use on our Site can be grouped into the following categories:
* Strictly Necessary: These Cookies are necessary for the Site to work properly. They include any essential authentication and authorization Cookies for our Site.
* Functionality: These Cookies enable technical performance and allow us to remember the choices you make while browsing our Site, including any preferences you set. They also include sign-in and authentication Cookies and IDs that enable you to return without additional sign-in.
* Performance/Analytical: These Cookies allow us to collect certain information about how you navigate the Site and services running on your device. They help us understand which areas you use and what we can do to improve them.
* Targeting: These Cookies are used to deliver relevant information related to our Site to an identified machine or other device (not a named or otherwise identifiable person) which has previously been used to visit our Site. Some of these types of Cookies on our Site are operated by third parties with our permission and are used to identify advertising sources that are effectively driving customers to our Site.
### How to Control and Delete Cookies
Cookies can be controlled, blocked or restricted through your web browser settings. Information on how to do this can be found within the Help section of your browser. All Cookies are browser specific. Therefore, if you use multiple browsers or devices to access websites, you will need to manage your Cookie preferences across these environments.
If you are using a mobile device to access the Site, you will need to refer to your instruction manual or other help/settings resource to find out how you can control Cookies on your device. For more information about cookies, and how to disable cookies, visit [https://www.allaboutcookies.org](https://www.allaboutcookies.org/).
Please note that if you restrict, disable or block any or all Cookies from your web browser or mobile or other device, the Site may not operate properly, and you may not have access to our services available through the Site. We are not be responsible for your inability to use our Site or any degraded function you may experience that may be caused by your settings and choices regarding Cookies.
#### Google Analytics
We may use Google Analytics to help analyze how you use our Site. Google Analytics generates statistical and other information about website use by means of cookies, which are stored on users' computers. The information generated is used to create reports about the use of our Site. Google will store this information.
If you do not want your Site visit data reported by Google Analytics, you can install the Google Analytics opt-out browser add-on. For more details on installing and uninstalling the add-on, please visit the [Google Analytics opt-out page](https://tools.google.com/dlpage/gaoptout).
### Method and Basis of Processing Data
#### Methods of processing
We take appropriate security measures to prevent unauthorized access, disclosure, modification, or unauthorized destruction of the Data.
The Personal Data processing is carried out using computers and/or IT enabled tools, following organizational procedures and modes strictly related to the purposes indicated. Data may be accessible to you and in some cases, to certain types of persons in charge, involved with the operation of the Base.meme (administration, legal, system administration) or external parties (such as third-party technical service providers, hosting providers, IT companies) appointed, if necessary, as Data Processors by us. You may request a list of these parties at any time.
#### Legal basis of processing
We may process Personal Data relating to you if one of the following applies:
You have given your consent for one or more specific purposes. Note: Under some legislation we may be allowed to process Personal Data until you object to such processing ("opt-out"), without having to rely on consent or any other of the following legal bases:
* Provision of Personal Data is necessary for the performance of an agreement with you and/or for any pre-contractual obligations thereof;
* Processing is necessary for compliance with a legal obligation to which we are subject;
* Processing is related to a task that is carried out in the public interest or in the exercise of official authority vested in us;
* Processing is necessary for the purposes of the legitimate interests pursued by us or by a third party.
### How We Use Personal Data
Data we collect about you is collected to:
* Provide Base.meme the customer support you request;
* Process transactions and send notices about your transactions on the platform;
* Detect any malicious or fraudulent activity;
* Enable us to monitor and analyze your behaviour ("Analytics");
* Beta test certain features on the platform;
* Contact you;
* Display content from external platforms;
* Handle productivity related activities;
* Provide social features;
* Optimize traffic and performance of the platform;
* Allow us to register you as a user of the platform and authenticate your credentials;
* Comply with legal obligations and respond to enforcement requests;
* Protect the rights and interests of Base.meme and Base.meme Affiliates (or those of our users and third parties);
* Infrastructure monitoring;
* Interaction with external social networks and platforms;
* Location-based interactions;
* Engage in traffic optimization and distribution.
### How We Share Personal Data
We may share your Personal Data with our service providers and vendors to assist us in providing you with Base.meme. We do not share your Personal Data with third parties without your consent, except as described in this Privacy Notice or as otherwise required or permitted by applicable law. We may share your Personal Data within our group, and with affiliates, for purposes consistent with this Privacy Notice.
We may share your Personal Data with third party companies and individuals that provide services on our behalf or help us operate the Site or our business. These third parties may use your Personal Data only as directed or authorized by us and in a manner consistent with this Privacy Notice, and are prohibited from using or disclosing your information for any other purpose. We may also share your Personal Data for compliance purposes.
We may sell, transfer or otherwise share some or all of our business or assets, including your Personal Data, in connection with a business transaction (or potential business transaction) such as a corporate divestiture, merger, consolidation, acquisition, reorganization or sale of assets, or in the event of bankruptcy or dissolution.
### Retention of Personal Data
We will retain your Personal Data for as long as necessary to fulfill the purposes we collected it for, including for the purposes of satisfying any legal, regulatory, accounting, or reporting requirements. We determine data retention based on the amount, nature, and sensitivity of the Personal Data, the potential risk of harm from an unauthorised user, the purposes for which we process your personal data and whether we can achieve those purposes through other means, and applicable legal requirements.
Personal Data collected for purposes related to the performance of a contract between you and us will be retained until such contract has been fully performed. Personal Data collected for our legitimate interests will be retained as long as needed to fulfill such purposes.
We may be allowed to retain Personal Data for a longer period whenever you have given consent to such processing, as long as such consent is not withdrawn. Furthermore, we may be obliged to retain Personal Data for a longer period whenever required to do so for the performance of a legal obligation or upon order of an authority.
Once the retention period expires, Personal Data will be deleted (or, where permitted under applicable law, may be de-identified instead). Therefore, the right of access, the right to erasure, the right to rectification and the right to data portability (where relevant under applicable law) cannot be enforced after expiration of the retention period.
However not all your Personal Data may be able to be deleted or de-identified; see the section of this Privacy Notice on "Blockchain transactions", below.
### Privacy Technology Practices
#### Links to Third-Party Sites
Base.meme may contain links to other websites, mobile applications, and other online services operated by third parties. These links are not an endorsement of, or representation that we are affiliated with, any third party. In addition, our content may be included on web pages or in mobile applications or online services that are not associated with us. We do not control third party websites, mobile applications or online services, and we are not responsible for their actions. Other websites, mobile applications and services follow different rules regarding the collection, use and sharing of your Personal Data. We encourage you to read the privacy policies of the other websites, mobile applications and online services you use.
#### Data Security
The security of your Personal Data is important to us. We employ a number of administrative, technical, and physical safeguards designed to protect the Personal Data we collect. The safety and security of your information also depends on you. We ask you not to share any of your personal security information.
Unfortunately, the transmission of information via the internet is not completely secure. Although we do our best to protect your Personal Data, we cannot guarantee the security of your Personal Data transmitted to the platform. Any transmission of Personal Data is at your own risk.
#### Blockchain Transactions
Your use of digital assets may be recorded on a public blockchain, in particular the settlement of your trades in digital assets. Public blockchains are distributed ledgers, intended to immutably record transactions across wide networks of computer systems. Many blockchains are open to forensic analysis which can lead to re-identification of transacting individuals and the revelation of personal data, especially when blockchain data is combined with other data.
As blockchains are decentralized or third-party networks which are not controlled or operated by us, we are not able to erase, modify, or alter personal data on such networks.
#### Overseas Disclosure and Your Privacy Rights
For purposes of relevant data protection legislation, Base.meme is the Personal Data controller. Base.meme is a platform with operations throughout the world. As a result, Personal Data may be transferred outside the country in which you reside for the purposes identified. Any such transfer of Personal Data shall take place under applicable law and will be protected through international data transfer agreements where necessary that have been recognized by relevant data protection authorities as providing an adequate level of protection to the Personal Data we process. By using the platform you understand that your Personal Data may be processed in the United States and outside of the EEA and the UK.
Residents of the EEA and the UK are granted certain rights over their Personal Data, which include:
* The right to obtain confirmation of the Personal Data we process.
* The right to rectify inaccurate Personal Data that we process.
* The right to request erasure of your Personal Data, subject to exceptions provided under the law.
* The right to restrict certain processing of your Personal Data, so long as the processing is not necessary for the performance of or in relation to a contract or service to which you are a party.
* The right to receive your Personal Data in a structured, commonly used and machine readable format
* The right to object to the processing of your Personal Data, including the right to object to automated decision-making and profiling.
* The right to withdraw your consent where you have previously given it for the processing of your Personal Data
You are generally entitled to access Personal Data that we hold about you. If you request access to your Personal Data, in ordinary circumstances we will give you full access to your Personal Data. Depending on the nature of the request, we may charge for providing access to this information, however such charge will not be excessive. However, there may be some legal or administrative reasons to deny access. If we refuse your request to access your Personal Data, we will provide you with reasons for the refusal where we are required by law to give those reasons.
Complaints: If you feel that we have not respected your privacy or that we have conducted ourselves inconsistently with this Privacy Notice, please contact Support and advise us as soon as possible. We will investigate your queries and privacy complaints within a reasonable period of time depending on the complexity of the complaint. We will notify you of the outcome of our investigation.
### General
If you would like to exercise any of the rights listed above, or if you would like to contact us about any questions you may have regarding your Personal Data, please contact Support and provide (i) enough information to identify you and (ii) a description of what right you want to exercise and the information to which your request relates. Any Personal Data we collect from you to verify your identity in connection with your request will be used solely for the purposes of verification.
If you are concerned that we have not complied with your legal rights or applicable privacy laws, you may contact us or your local data protection authority.
