A minimal Soulbound Token (SBT) dApp for sharing and updating your social media identity, deployed on Base Sepolia.

• Mint a Soulbound Token (SBT) to your connected wallet (free, just pay gas)
• Update your SBT: Change your social info anytime—one SBT per wallet
• Required Socials: X (Twitter), LinkedIn, GitHub, Discord, Telegram, Farcaster
• All data stored off-chain in token metadata (IPFS)
• Beautiful wallet connection (MetaMask, WalletConnect) via RainbowKit

git clone https://github.com/Shru/sfi.git
cd sfi

npm install

Create a .env file in the root directory:

PRIVATE_KEY=your_private_key_here

⚠️ Never share your private key. Use a test wallet!

npx hardhat compile

1. Configure the network in hardhat.config.js (already set for Base Sepolia):

   networks: {
     sepolia_base: {
       url: "https://sepolia.base.org",
       accounts: [process.env.PRIVATE_KEY]
     }
   }

2. Deploy the contract:

   npx hardhat run scripts/deploy.js --network sepolia_base

To interact with your SBT on Base Sepolia, add the network to MetaMask:

• Network Name: Base Sepolia
• New RPC URL: https://sepolia.base.org
• Chain ID: 84532
• Currency Symbol: ETH
• Block Explorer URL: https://sepolia-explorer.base.org

How to add:

1. Open MetaMask, click the network dropdown, and select "Add network."
2. Enter the details above and save.

This script lets you mint a new SBT or update your existing SBT's metadata.

Before running:

• Update the contractAddress variable in the script to your deployed contract address.
• Update the tokenURI variable to your actual IPFS metadata URI (or use the placeholder for testing).

Run the script:

npx hardhat run scripts/mintOrUpdate.js --network sepolia_base

• The script will print the transaction hash and confirm mint/update.
• Run it again with a different tokenURI to test updating your SBT.

This script attempts to transfer an SBT and should always fail, confirming the token is non-transferable.

Before running:

• Update the address variable to your deployed contract address.
• Update the recipient variable to any valid Ethereum address (not your own).
• Update the tokenId (e.g., 1) to a token you own.

Run the script:

npx hardhat run scripts/tryTransfer.js --network sepolia_base

• You should see an error message: Transfer failed as expected: SBT: non-transferable

• All social info is stored in the token's metadata on IPFS.
• Placeholder image: SBT image.png (in /assets).
• Metadata follows the ERC-721 standard.

• Connect wallet (MetaMask, WalletConnect)
• Fill out required socials form (all fields required, validated)
• Mint or update your SBT (calls smart contract)
• All data stored off-chain (IPFS)

• Add more social platforms
• Social account verification (OAuth, social proof)
• AI-generated images for SBTs
• Network switching and mainnet support

MIT