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EAS is an infrastructure public good for making attestations onchain or offchain. Attestations are digital claims that are signed by an entity about anything or anyone.

Attestations are being used for a wide range of use cases such as decentralized identity, proving the authenticity of content, voting systems, DAO governance and roles, account abstraction authorizations, proof of contribution or impact, and much more.

Open-source. Permissionless. Tokenless. Free-to-use.


The most innovative projects will win:

  • 🥇1st place - $4,000
  • 🥈2nd place - $3,000
  • 🥉 3rd place - $2,000
  • 🎉 4th place - $1,000

To qualify, your submission should:

  • Register or use a schema on EAS
  • Have made actual onchain or offchain attestations
  • Be able to demo a functioning application

Consider building with attestations when you need to:

  • Verify certain aspects or attributes of something’s identity (verifications, skills, identity)
  • Provide a guarantee that something happened, was said, or was completed.
  • Provide proof of provenance or the origination of something
  • Provide a 3rd party proof of anything - like provenance, skills, funds, attendance, contribution
  • Build a reputation system within a community, marketplace, or app.
  • Generate a badge or verification for someone/thing
  • Prove/verify compliance in a process to prove specific procedures were followed
  • Prove/verify that a statement was made by someone at sometime
  • Provide more transparency in decision-making processes
  • Generating receipts of payments or events

Below are a few ideas to help inspire what you could build during a hackathon:

  • Social graphs based on attestation data
  • Sybil resistance use case for various types of verifications
  • Account Abstraction + Attestations for Authorization (ex. Requiring an attestation from the treasury manager to authorize a payment).
  • Dynamic NFTs based on attestation data and ERC-6651
  • Simple ticketing applications for meetups or events
  • Verify the authenticity of content in the age of AI
  • Zero-knowledge attestations using EAS + Sismo or other to prove you have an attestation without revealing the address that has it
  • Proof of anything like proof of attendance, proof of compliance, proof of skill.
  • Attesting to the roles in an online community
  • Subscription-based memberships using attestations that expire
  • Digital voting systems for any type of competition or community decision
  • A digital marketplace for schema coordination
  • See more use case ideas


This workshop is happening in-person
Building with EAS: The base layer for attestations
Time: 02:00 PM CEST – Jul 21, 2023
Location: Workshop Room 1