Historical retrospective · NFTs
Soulbound-token proposals explored non-transferable digital credentials
EIP-5192 and related proposals explored ways to make some NFTs non-transferable, enabling credentials or identity-linked badges rather than market assets.
The design space raised questions about privacy, revocation and the risk of permanent public association.
The idea broadened NFT discussion from collectibles to credentials and reputation systems.
A public credential can expose sensitive history; non-transferability does not automatically make identity data safe.
Primary source
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