Ethereum Attestation Service
Web3 credential tools
Ethereum Attestation Service
Ethereum Attestation Service (EAS) is open-source infrastructure for signing and verifying any structured data on-chain or off-chain.
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What is Ethereum Attestation Service?
EAS is a tokenless public good that lets anyone register a schema and issue attestations about identity, reputation, RWAs, AI evaluations or any other claim. Developers integrate via SDK, CLI and GraphQL across Ethereum, Arbitrum, Optimism, Base and other EVM chains, with 9.5M+ attestations made to date.
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