Ethereum Attestation Service (EAS)

Public Good Projects Discussion
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Describe your project and why you classify as a Public Good?

EAS is an infrastructure public good for making attestations onchain or offchain about anything. It’s open-source, permissionless, and token-free. Learn more about why we exist.

Attestations are simply digital signatures on structured data. From this primitive, we can ultimately decentralize more than just money & assets. We can start to build more trustful interactions online and onchain. EAS runs on two smart contracts. One for registering a schema and the other for making attestations with that schema. Additional utilities extend the functionality while making the protocol highly composable and easy to build upon.

Credible neutrality is incredibly important for the success of an open standard like EAS. Imagine if email didn’t exist today and people were competing to own and monetize the protocol for emailing each other. You’d have separate protocols for Outlook, Gmail, Yahoo, and others. In this world, no one can email in a standardized way without endless integrations. Imagine… “Do you use gmail? Nope. I use Outlook. Ok I guess we’ll just have to call each other.” Or imagine having to pay email.org a service fee every time you send an email. The email industry would be completely fragmented. We see the attestation ecosystem in a similar way. EAS must be a credibly neutral public good so any entity can make attestations about anything in a more structured way without competing with others at the infrastructure layer. From this infra layer, anyone can build amazing businesses on top while knowing it remains a free and open resource.

What are your main project funding sources?

Grants funding

How much have you raised from each of your funding sources and from whom?

219k OP from retropg3, $30k from Gitcoin rounds, $12k from Base.

Are you seeking?

Funding for general operations

Has your project launched or planning to launch a token?

No. Just burn more ETH.

Share your project roadmap:

Our mantra is, “get builders building faster” and it’s how we prioritize where to focus. Everything we’re focused on this year is to increase the speed from when builders become aware of attestations to building on attestations. In spirit of that, we’re focused on several improvements to the devex for building apps that use attestations faster, and focusing on better ways for teams to coordinate on schemas and composability.

Milestones we have achieved

  • 600k+ attestations made from over 12k attesters
  • Launched several dev tools to make building EASy such as
    – EAS SDK for simplifying how to interact with the EAS contracts
    – EAS Indexer for indexing attestations that are relevant to you
    – EAS API to make it easy to query attestation data
    – EAS Explorer for discovering and verifying attestations on the chains you’re building on
  • EAS has been natively integrated into the Optimism Bedrock native code base linked by two predeploy addresses. This standardizes attestations throughout the Superchain.
  • Significant integrations with leading teams like Coinbase Verifications & Gitcoin Passport stamps & scores
  • Launched an attestation fellowship to help promising attestation founders get the right ecosystem support and had over 150+ teams apply for the first cohort.

Tell us more about the milestones you’d like to achieve

We want to get builders building faster by:

  • Improving additional example repos and components that can be easily used by devs in their workflow
  • Continue improving the schema discovery and coordination experiences in our explorer so builders find schemas relevant for their use case
  • Foster a collaborative dev environment for all attestation builders to get the right support when they are going from idea stage to MVP.
  • Continue deploying EAS on chains where builders are building

Funding Goal & Budget:

15 ETH

Tell us more about your team

Contributors:

  • Steve: Full stack developer leading all things technical. Built the first Bitcoin wallet in the browser (kryptokit aka jaxx wallet) and was a part of the founding team of Ethereum.
  • Leonid: Lead smart contract & security engineer focusing on all contract improvements, deployments, and SDK. Opsec expert and former lead at Bancor.
  • Dino: Early Ethereum contributor focused on systems architecture, adviser, and partnership building.
  • Bryce: Public goods builder with some salty dev and design skills leading all product, operations, and growth for EAS
  • Plus 100’s+ of attestation builders in the community

Social Credibility

  • Launched on mainnet at ETHDenver (March of 2023).
  • Since then we’ve heavily focused on the developer experience (SDK, API, Docs, indexer, example contracts, example apps, API, and more)
  • This has led to major adoption of EAS with Coinbase, Optimism, Gitcoin, Arbitrum, Ceramic, Guild, and more.

Why is your project important?

  • It will help the Ethereum ecosystem decentralize more than just money & assets. Attestations are a core lego block for deciding who and what we should interact with online and onchain in a way that doesn’t presuppose WHY we trust something. This is unlocking so many unique use cases and projects that are largely non-financial, such as:
    – Content verifications, impact tracking systems, voting systems, reputation systems, knowledge graphs, digital identity, machine-to-machine attestations, attested data networks, and beyond.
  • Without this layer being a public good, we will continue to see the world fragment and try to capture each use case without a common language for making digital signatures in a more structured way (attestations).

Socials & Links

Team Socials

Telegram & Discord Contact

brycealan

Wallet Address

0x0b74b946D0aD1881e9306ba0F76ccA77A4b39206

Anything else you’d like us to know?

EAS is credibly neutral with no business model. This layer is focused on value creation and not value extraction. We rely on grants and donations to continue stewarding EAS and it’s amazing programs like this, retropgf, gitcoin, and others that allow us to continue making an impact. If we’re successful together, we can truly make an impact on the world using blockchain for higher-impact use cases. This capital gives us a shot to achieve our goals a bit faster. We appreciate you all for building this program :slight_smile:

What can the Octant team help you with?

We’d love to explore with the Octant team where attestations might be useful within the octant ecosystem. This could be a win-win where octant improves certain processes and experiences related to this grants program (impact tracking, verifications, et.al) and EAS builds more awareness through adoption with value-aligned teams.

How do you define impact for your project? What metrics are you tracking?

A single attestation from a valued entity can add impact. However, right now we’re tracking impact based on total adoption of attestations made through each ecosystem as a proxy to see which ecosystems are thriving or need more support unlock attestations within their communities.

Share your project impact metrics & results

  • Total Attestations = 600k
  • Total Unique Attesters = 12k+
  • Total Recipients = 305k+

Impact links:

Additional Resources to Check Out

Loom Video - Speedrun EAS: Builder Workshop

https://www.loom.com/share/96e7a6e4e1ff48b0b0d1b9cf48e2312f

Ethereum Attestation Service Explainer - Vaibhav Saini | Co-Founder, OpenSea Pro

ELI5 Ethereum Attestation Service (EAS) - Why You Should Care — RYAN Y YI

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Posting an update since Epoch Three!

We officially crossed over 1m attestations from over 14k unique attesters! While to us this is a vanity metric, it still is a fun one to keep track of. Our core focus is on helping builders build faster. We’d love to hear more about ways we can simplify the dev experience from anyone interested in or who has had experience with EAS.

The first-ever Attestation Fellowship officially ended!

The Fellowship had over 155 teams applied from over 40 countries. 13 teams were admitted to the first cohort, and with the help of 18 mentors in the industry, we collectively coached these teams while they built amazing attestation use cases across a variety of use cases.

  • Icebreaker - open professional network
  • CATTS - dev tool for attestation builders attest to computed values
  • Credentials - onchain credit for emerging markets
  • Quickseal - Digital signature platform for legal docs
  • Ethereum Localization Service - decentralized translation network with human/ai attesters
  • Vitro - Attested payloads from authenticated hardware
  • OKcontract - Attested smart contract interactions
  • Astral - Dev tools for location-based dapps
  • Inertia - Community-led prediction market
  • Resolvia - one-click resolver contracts
  • Proof of - Onchain proof of offchain actions
  • Faust - autonomous robot attestations
  • Metrics Garden - public good for measuring impact

Additional Updates

  • EAS core contracts and all tooling have been deployed on zkSync to support additional builders there!
  • We’re supporting the Onchain Summer buildathon to inspire more builders to build attestation-based apps

What’s up next

  • Working on a new way to calculate relative trust in a network that differs from PageRank and eigen trust.

  • A deeper dive into the fellowship program and its outcomes.

  • We’d love more feedback from the community on what would make the dev experience easier when just learning about EAS

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Short-term Update

  • Total Funds Received (Previous Round): 9.62 ETH
  • Total Funds Requested: 15 ETH
  • Funds Spent: These funds have not been spent as they were just received in August.
  • Remaining Balance: 9.62 ETH

Plans for Next Epoch

  • Updated Milestone 1: Schema Developer Tooling
    • Description: We’re focused on improving developer tooling and overall experience. We’re working on a new tool that will help builders improve schema implementations.
    • Expected Immediate Outcome: Builders can more easily integrate schemas into their projects.
    • Funding Needed: ETH.
  • Updated Milestone 2: Release the transitive trust algorithm
    • Description: We are developing a new way to compute and propagate trust in a decentralized network. This milestone focuses on its public release.
    • Expected Immediate Outcome: Developers will have an improved way to calculate trust. We’ll also release an ELI5 version to understand how it works. The npm package is also in the works.
    • Funding Needed: ETH.
  • Karma GAP: https://gap.karmahq.xyz/project/ethereum-attestation-service-eas-2/grants?tab=overview&grantId=0xe5f519e8f5e5d67a3f30a24d47c3ae1e94c7735428481c71939a59db38884952
  • Additional Funding Request: ETH opens opportunities for us to scale the attestation ecosystem faster by continuing to participate in hackathons, support contributors, and more.

Since the last round, we’ve been heads down and focused on helping builders build faster and creating new tools to expand the attestation ecosystem.

Some notable achievements and milestones include:

  • Passing over 1 million Superchain contract interactions. This shows the speed and adoption of attestations as an important primitive in the Superchain ecosystem. Read more about it.
  • EAS supported the ETHGlobal Superhack and had over 69 teams submit projects. 36 of the teams went on to win additional prizes from other partners, with a majority of all top finalists having used attestations in their products. Teams focused on “Real World Use Cases” with attestations and creating new developer tools for builders. See the winners.
  • Scroll Canvas launched adding nearly 2 million attestations. It’s a new way to issue permissionless badges that are attestations (not NFTs). Learn more about it.
  • ETHGlobal announced they are bringing their community onchain. A core focus is using attestations for various interactions. Learn more.
  • Hosted a developer workshop at ETHCC to help builders learn how to build with EAS using a simple “Truth Bot” that makes attestations based on the probability that a given statement is true or not (using GPT4o and server-side attestations).EthCC[8] — summer 2025
  • Completed the first draft of the “Transitive Trust” algorithm, which is a new way to compute and propagate trust in a decentralized p2p network. It builds off of existing p2p trust algorithms but aims to reduce risk in sybil resistance, collusion, and how incentives are handled. A sneak peek to the paper is here. We are actively seeking community feedback and plan to launch an npm package later in September.

What’s Up Next

  • Collecting more community feedback on the transitive trust algorithm. Finalizing it. Developing the npm package so devs can start using it.
  • Continued support of the developer community by bringing more awareness to what is being built and supporting them on their attestation journey.
  • Continuing to make improvements to the developer experience (simplifying docs, showcasing important community tools, and more).

We’re excited to continue building and supporting the EAS developer community. The continued support from the Octant community enables us to accelerate our active mission of helping builders build faster, creating more trust online, and decentralizing more than just money and assets.

Keep building. Keep attesting! Thank you to all the builders and supports of EAS <3.

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@brycealan Appreciate the update but I feel it could be closer to the updated reporting requirements, relevant link: Project Submission Process | Octant Docs

I also notice that you haven’t included the link to KarmaGAP (details included in above link).

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@mat7ias - Updated the post accordingly. Thanks for the heads up on this. Please let me know if all looks good.

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@brycealan Thanks!
The long-term template is the one for you to use for the future, since it’s more than 1 epoch since EAS first submitted. But you put a lot of detail into the short-term one to the extent that it covers most things from the long-term template anyway so all good there. Appreciate the update and I like the sneak peak on the Transistive Trust algo! It’s always great to have more research on trust and sybil resistance in the ecosystem. :slight_smile:

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EAS Epoch 6 Update

  • Total Funds Received from Octant so far: 24.923 / ETH
  • Funds Spent: Reserved for 2025
  • Detailed Utilization: Funds will be used to support builder programs/tooling in 2025 + ops.

Milestones and Deliverables

  • Milestone: Expand awareness and adoption of EAS
    • Description: Integrate/introduce EAS to new ecosystems and highlight inspiring use cases/projects in simple ways.
    • Immediate Outcome: More builders discover EAS, feel inspired to build, and activate their communities, leading to new integrations and stronger growth effects.
  • Milestone: Get devs building faster
    • Description: Simplify docs, streamline the developer experience, and expand tooling so that builders can move from idea to execution rapidly.
    • Immediate Outcome: Builders ramp up faster, reducing friction and ship new attestation-based projects.
  • Milestone: Increase utility of EAS
    • Description: Invest in areas like zk attestations, interoperability, and ecosystem-specific integrations (e.g., Farcaster, Superchain, and agent-based attestations).
    • Immediate Outcome: EAS becomes more versatile, attracting diverse teams and use cases.
  • Karma GAP: Octant Epoch 6

Challenges

  • Description: Our core contracts are intentionally simple, which pushes complexity into applications and tooling. We need to standardize attestations and improve developer resources to help newcomers and experienced devs alike.
  • Updates: We’re focusing on making EAS easier to adopt, standardizing where possible, and clarifying complex concepts like transitive trust.
  • Resolution: We’re doubling down on what works—faster builder onboarding, clearer docs, practical examples, and a reach into new ecosystems.
  • Lessons Learned: Ongoing simplification—through improved docs, intuitive tools, and real examples—encourages builders to rely on EAS rather than attesting from scratch.

Outputs and Outcomes

Outputs (Last Epoch):

Short-term Outcomes:

  • Wider attestation adoption, better developer resources, and clearer paths to extending EAS utility.

Long-term Outcomes:

  • EAS becomes the credibly neutral standard for making onchain and online interactions more trustful.

Metrics for Outcomes:

  1. Cumulative Attestations: 7.3M
  2. Unique Attesters: 438k
  3. Onchain Recipients: 1.45M
  4. New Ecosystems Added: 2 (Ink + Telos)

Builder Feedback:

  • Jesse Pollak: “We use EAS at Base + Coinbase and it’s been invaluable. I want more tooling + standardization built around it.” - Metrics Garden Attestation
  • Griff: “EAS is the infra that makes reputation interop possible, I use it in 5 different projects!” - Metrics Garden Attestation
  • Jonas: “Could have better out-of-the-box tooling, but it’s something governance couldn’t live without.” - Metrics Garden Attestation
  • KWB: “EAS has been a great resource, and consolidating technology to align on how we can ascribe points of data for smart contracts to use in their operation.” - Metrics Garden Attestation
  • LauNaMu: “EAS is a fundamental primitive for Reputation and Identity in the Optimism Ecosystem. Impact Garden, depends on this product to generate onchain reputation data and their availability of standardized schemas to leverage data points generated by the Optimism Foundation. The versatility of the platform has also enabled us to create multiple onchain proofs for different use cases such as communities, dev work and tools.” - Metrics Garden Attestation

Plans for Potential Funds Raised in the Next Octant Allocation Window

  • Goal 1: Establish a builder program in Q1
    • Description: Support promising attestation-based projects, similar to earlier fellowships.
    • Expected Outcome: More teams receive the capital, guidance, and network they need to bring impactful attestation-based products to life.
    • Funding Needed: ~15+ ETH
  • Goal 2: Participate in attestation-focused hackathons and continue deploying EAS
    • Description: Introduces and reinforces EAS into new builders/communities
    • Expected Outcome: More builders integrate EAS, expanding audience and impact.
    • Funding Needed: ~10+ ETH
  • Goal 3: Support EAS ecosystem contributors, devs, and community builders
    • Description: Fund contributors who enhance EAS tooling, integrations, and community activation.
    • Expected Outcome: Steady ecosystem growth, continuous innovation, and increased attestation utility.
    • Funding Needed: ~ETH

Other Funding

  • Grant Funding Received Since the Last Epoch:
    • Optimism Retro Round 5: 132k OP
    • Optimism Retro Round 6: 65k OP
    • Scroll Public Good Allocation: 100,000 SCR
    • Gitcoin GG22: 40k USDC

Future Plans for Financial Sustainability

EAS will continue to build partnerships within the Ethereum ecosystem and beyond it that are passionate about attested data and a more trustful future. Sustainability comes from our ability to continue to make an impact and align ourselves with partners that share this vision.

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Can you also crosspost this update to project_submissions in our Discord? Discord