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Anonymous Credentials for Trustless Agents

An extension to the ERC-8004 standard that allows agents to prove claims about personhood, reputation, and more.

The Ethereum Foundation PSE team introduced Anonymous Credentials for Trustless Agents (ACTA), an extension to the ERC-8004 standard that allows agents to prove claims about personhood, reputation, model provenance, and user jurisdiction. It uses zero-knowledge proofs to verify claims without revealing underlying data.

ACTA was created to address the permanent public interaction graph, linkability across sessions, lack of selective credential disclosure, lack of anonymous reputation feedback, and traceable cross-registry profiles in ERC-8004, the onchain trust standard for AI agents. The extension is currently in a draft phase. The PSE team is actively soliciting protocol design proposals.


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