What if your wallet could carry a verifiable, tamper-proof
reputation that follows you across the entire Web3 ecosystem?
That's exactly what Soulbound Tokens (SBTs) make possible.
In this video, we dive deep into how to design and build an
on-chain reputation system using non-transferable tokens
unlocking new use cases like credentialing, identity,
governance, and trust in decentralized applications.
What You'll Learn:
- What Soulbound Tokens (SBTs) are and how they differ from NFTs
- The concept of "Soulbound" introduced by Vitalik Buterin
- Why non-transferability matters for reputation
- Designing a reputation system architecture
- Writing a Soulbound Token contract in Solidity
- Implementing non-transferable ERC721 logic
- Adding reputation scoring and attestation logic
- Issuing, revoking, and updating SBTs
- Using SBTs for DAOs, KYC, credentials, and identity
- Privacy considerations and zero-knowledge proofs
- Deploying to a testnet and verifying on Etherscan
- Real-world projects already using SBTs
Tools & Tech Used:
- Solidity
- OpenZeppelin Contracts
- Hardhat
- ERC721 (modified for non-transferability)
- EIP-5114 / EIP-4973 references
- MetaMask
- Sepolia Testnet
- Etherscan
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DISCLAIMER: This video is for educational purposes only and is
not financial or legal advice. Implementing identity or
reputation systems may have privacy, legal, and regulatory
implications. Always DYOR and consult professionals before
deploying to production.
Music track: memories by massobeats
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