A Soulbound Token SBT functions as an untransferable digital token which remains locked to its wallet after its initial distribution. A Soulbound Token establishes permanent ownership to a blockchain address which differs from the marketable nature of cryptocurrencies and traditional NFTs. The system exists to establish identity through its representation of credentials and reputation instead of financial value.
The idea was introduced in 2022 by Ethereum co founder Vitalik Buterin along with researchers Glen Weyl and Puja Ohlhaver. They proposed Soulbound Tokens as part of a broader vision to expand blockchain use beyond payments and speculation. SBTs exist to create permanent records which show people their personal achievements and their connections with others according to actual proof of their accomplishments.
Soulbound Tokens function as digital certificates which operate in real-world situations. The tokens can prove various qualifications such as academic degrees and professional licenses and event attendance and voting history and community membership. The system uses non-transferable tokens to demonstrate real relationships and achievements which people and organizations establish with each other.
The current state of Soulbound Tokens exists as an experimental technology. Developers are continuing to investigate privacy protection methods because there are only a few large implementations available. The term is used in crypto reporting to describe the digital identity and governance advancements which will shape the upcoming decentralized social systems.
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