Ethereum Attestation Service (EAS) is an infrastructure public good for making attestations onchain or offchain about anything. Open-source, permissionless, token-free. Built by the community for the community. Live on mainnet, several L2s, & testnets.

Attestations are digital signatures on structured data used to build more trust online & onchain.

How do you decide who and what to trust? Our online and onchain worlds are filled with both genuine and deceptive information. We need a common way we can trust the authenticity of information and the safety of our interactions. Anytime you need to prove or verify something, attestations will play a critical role. Learn more about why we exist.

How It Works

EAS runs on two smart contracts — one for registering a schema and the other for making attestations with schemas. We've also created several dev tools to help builders build faster:

An attestation explorer to discover and create schemas + attestations
EAS SDK to easily start building
GraphQL API for each chain
Endless Docs for technical & non-technical builders

Who Uses It

We've already seen a few amazing use cases from the community such as:

Gitcoin Passport stamps & scores can be attested to onchain
Optimism RetroPGF applications & approvals are attestations (EAS is natively integrated into the OP Stack)
Coinbase attesting to verified accounts
Devfolio's quadratic voting for hackathons
Guild using attestations to gate communities & chat groups
and many more...

Where We're Focused

We're actively building out improvements to the attestation explorer experience
Continued builder education, awareness, and adoption
Building unique integrations such as (zkps generated from attestations)
Building out our builder programs that help promising attestation founders get access to the right people & support in the industry

Get In Touch With Us & Check Out Some Community Content

Community Content:

EAS Channels:

Ethereum Attestation Service

Outputs and Outcomes

Ethereum Attestation Service

Outputs and Outcomes