ETHGlobal

ETHGlobal Paris

Ethereum Attestation Service

$10,000

About

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.

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.

Prizes

EAS ⸺ $10,000

㉧ $4,000 ㉧ $3,000 ㉧ $2,000 ㉧ $1,000

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

Getting Started

Developer Links

Website Documentation SDK Github Explore Ideas GraphQL What are attestations

Attestation Explorers Sepolia Base Goerli Optimism Goerli Mainnet Arbitrum

Sample apps: MetIRL - A simple attestation app for meeting someone IRL Speaketh - A social network for posting comments Cool person social graph Quadratic voting system

Workshop

Building with EAS: The base layer for attesta...

Join us as we explore the role of attestations and the impact they will have on our industry. This interactive work...

This workshop is happening in-person