Membership NFT

Your Built By DAO membership is represented by a soul-bound NFT on the Base blockchain. This NFT proves your membership, tracks your rank, and enables governance participation.

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🎫 NFT Quick Facts

📜 Standard	🔒 Transferable	🔗 Network	📛 Symbol
ERC-721	No (Soul-bound)	Base (Ethereum L2)	BLTBYMEMBER

📋 Contract: DAOMembershipNFT

🔢 Token IDs: 10 (Seeker) → 99 (Founder)

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🔒 Soul-Bound

🔒 What is Soul-Bound?

Your membership NFT is non-transferable. It cannot be:

Action	Allowed?
🛒 Sold on marketplaces	❌
🔄 Transferred to another wallet	❌
🎁 Given to someone else	❌
🔥 Burned (membership removal)	✅
✨ Minted (new membership)	✅
📈 Upgraded (promotion)	✅

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🤔 Why Soul-Bound?

Reason	Explanation
🚫 Prevent Vote Buying	Membership (and its voting power) cannot be purchased from others
✅ Identity Integrity	Your rank reflects your actual contribution, not purchased influence
🛡️ Anti-Sybil	You cannot split your membership across multiple wallets
🏆 Trust Basis	Membership genuinely represents demonstrated commitment

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🆘 Emergency Transfers

In rare cases (wallet compromise, recovery), transfers to whitelisted addresses are possible:

Scenario	Process
🔐 Wallet compromise	Submit recovery request to governance
📱 Lost access	Verify identity through documented process
🔄 Migration	Approved through governance proposal

Emergency transfers require admin approval and are logged on-chain.

🔢 Token IDs

✨ Minting

📈 Promotion

📉 Demotion

🔥 Burning

🔍 Querying

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📋 Contract Specifications

Full Contract Details

Property	Value
Standard	ERC-721
Name	Built By DAO Membership
Symbol	BLTBYMEMBER
License	MIT
Upgradeable	No
Network	Base (Ethereum L2)

Inherited Contracts

• ERC721 — NFT standard

• AccessControl — Role-based permissions

• ReentrancyGuard — Security protection

State Variables

address public founder;
address public multisigWallet;
bool public multisigEnabled;
mapping(address => uint256) public memberRank;
mapping(uint256 => bool) public validRanks;
mapping(address => bool) public whitelistedAddresses;

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🔐 Security Features

Transfer Restrictions

function _update(address to, uint256 tokenId, address auth)
    internal override
{
    address from = _ownerOf(tokenId);

    // Minting is allowed
    if (from == address(0)) return super._update(to, tokenId, auth);

    // Burning is allowed
    if (to == address(0)) return super._update(to, tokenId, auth);

    // Emergency whitelist transfers
    if (whitelistedAddresses[to])
        return super._update(to, tokenId, auth);

    // All other transfers blocked
    revert TransferNotAllowed();
}

Role Verification

All minting, promotion, and demotion functions verify caller has appropriate role before execution.

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🔗 Learn More

• 🎖️ Member Levels — Understanding the 14 levels

• 📈 Progression & Reviews — How to advance

• 🗳️ Voting Power — How NFT affects governance

• 📋 Full Contract Docs — Technical reference

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🔗 Related Pages

Member LevelsProgression & ReviewsDAOMembershipNFTVoting Power