Learn more about Gitcoin
Ethereum Attestation Service
100%
average score over 2 application evaluations
An open-source, token-free protocol for making onchain or offchain attestations, enabling trustful digital interactions through use cases like digital identities, content authenticity, reputation systems, and more.

EAS is an infrastructure public good for making attestations onchain or offchain about anything. The protocol is open-source, token-free, and permissionless.

Think of attestations as digital signatures about any type of structured information. They are the atomic unit of building trustful interactions online.

Attestations are opening doors and uniting the industry to build use cases traditionally fragmented and hard to achieve - from creating digital identities, ensuring the authenticity of content, machine-to-machine attestations, setting up voting systems, building reputation systems, proof of X(anything), and beyond. Whenever trust matters in a digital interaction, attestations can play a role.

Simply put, EAS is an infrastructure tool for building a more trustful online and onchain world.

Available on:

Ethereum, Optimism, Base, Arbitrum (Nova/One), Polygon, Linea, Celo, Scroll

Notable integrations

  • EAS contracts are natively integrated in the OP Stack linked by two predeploy addresses
  • Coinbase's Coinbase Verifications product is built using the EAS predeploys on Base
  • Gitcoin Passport uses attestations to attest to stamps and scores onchain on Optimism & Linea

Explore additional resources: Docs | SDK | API | Learn about Attestations EAS Purpose

Ethereum Attestation Service History

People donating to Ethereum Attestation Service, also donated to

Developing web3 tech for nonprofits, with multilingual, zero-fee, crypto donation platforms, referral rewards, NFT collections, and plans for Quadratic Funding and DAO integration.
Praise is a digital platform enhancing community engagement through gratitude, providing insights, reputation scoring, and fostering a cooperative culture with tangible rewards.
Pairwise is an open-source, snapshot-style voting dApp designed to make Web3 community governance engaging and straightforward, reducing voter apathy and improving decision-making efficiency.
A swap and perpetual DEX offering secure, liquid trading for various blue-chip crypto assets.
Web3 climate project supports indigenous communities in the Global South through education, fundraising, and the development of regenerative practices to enhance biodiversity, sovereignty, and climate resilience.
Back to Projects