Definition ∞ Trustless revocation describes a method in decentralized systems where the ability to invalidate a credential, key, or permission does not rely on a central authority. Instead, the revocation process is verifiable on-chain, executed by cryptographic proofs or smart contract logic. This maintains decentralization while allowing for necessary security adjustments. It enables secure invalidation without central oversight.
Context ∞ This concept is vital for managing digital identities, access controls, and certain types of non-fungible tokens (NFTs) in a decentralized manner. It addresses the challenge of maintaining security and adaptability without introducing single points of failure. Research explores how to implement efficient and secure trustless revocation mechanisms across various blockchain applications, enhancing their robustness.
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