Soulbound Token (SBT)
Also known as: Non-Transferable NFT, Reputation Token, DeSoc Credential
A non-transferable NFT that represents personal achievements, identity, or reputation on the blockchain.
Soulbound Tokens (SBTs) are a type of non-transferable non-fungible token (NFT) designed to represent an individual's identity, credentials, or affiliations in a verifiable and permanent way. Unlike typical NFTs, SBTs cannot be sold or transferred, ensuring authenticity and ownership integrity. Proposed by Vitalik Buterin and others, SBTs are foundational to the concept of Decentralized Society (DeSoc), where individuals build digital reputations through earned and issued tokens. Use cases include diplomas, KYC attestations, DAO memberships, and professional credentials.