Soulbound Tokens (SBTs) Meaning

Soulbound Tokens (SBTs) are non-transferable NFTs that represent a person's identity, credentials, or reputation. Proposed by Vitalik Buterin, they are "Bound" to a specific wallet ("The Soul") and cannot be sold or sent to someone else.

This makes them ideal for representing "Degrees," "Medical Records," or "Governance Standing" within a community.The technical challenge of SBTs is "Recovery." If a user's wallet is hacked or they lose their key, they lose their entire "On-chain Identity." To solve this, SBT protocols often use "Social Recovery" mechanisms where a "Guardian" can help migrate the soulbound tokens to a new address. This shifts the focus of Web3 from "Financial Speculation" (trading tokens) to "Social Identity" (building a reputation).SBTs are the "Missing Link" for decentralized society.

They allow a DAO to give "More Voting Power" to someone who has been a long-term contributor, rather than someone who just has a lot of money to buy tokens.

They also enable "Under-collateralized Lending," as a lender could see a borrower's "Reputation Score" (backed by SBTs) and trust them with a loan based on their "On-chain History" rather than requiring them to post 150% collateral.