Ethereum Attestation Service (EAS)

Estándar de Contrato Inteligente

Ethereum Attestation Service (EAS): an open-source, permissionless, tokenless infrastructure public good for making attestations onchain or offchain. Two smart contracts: a schema registry and an attester; schemas can be registered for any use case and may carry a resolver contract for onchain verification or payments. An attestation is a digital signature on structured data. It makes no assumption about schema structure or use, and is not an identity provider.

Comunidad

Enlaces

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Detalles

Licencia

MIT; https://github.com/ethereum-attestation-service/eas-contracts

Estado de Desarrollo 🟢 Activo

Propietario

Not stated by the project (GitHub organisation "Ethereum Attestation Service"; no legal entity named in the cited sources).

Órgano de Gobierno

None stated. The documentation describes the project as an open-source public good built by the community for the community; no governing body, legal entity or decision process is documented in the cited sources.

País Not stated by the project.

Año de Inicio 2020

Stack

Solidity / EVM (EAS and SchemaRegistry contracts, resolver contracts, EIP-712 proxy, indexer contract); TypeScript SDK

Financiamiento

Not stated by the project in the cited sources. The contracts repository carries a funding.json pointing to an Optimism retroactive-funding project entry; the docs describe grants, retroactive funding and donations as ways such public goods are funded.

Última Investigación 28 oct 2026

Vista de topología

Esta herramienta en el centro y lo que se relaciona directamente con ella. Cada línea nombra el tipo de relación.

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Dominios de Caso de Uso

Identidad y Confianza

Capacidades

Atestaciones portátiles

Formatos interoperables

Estándar de Contrato Inteligente Atributos

Orígenes

A common, neutral way to make verifiable statements onchain and offchain, so reputation, voting, governance, provenance and social graphs can be built on a shared primitive

Formatos de Datos

ABI-encoded schema-defined attestations; EIP-712 signed offchain attestations; GraphQL for queries

Términos

MIT; free to use; tokenless

Fondos

Not stated by the project.

Basado En

Ethereum smart contracts; EIP-712 typed signing; ERC-1271 signature verification (EIP1271Verifier in the repository). The repository credits Bancor V3 as the framework it was inspired by and adopted.

Permisos

Permissionless: anyone can register a schema and make attestations; schema creators may attach resolvers that restrict attesters or recipients, or require payment.

Herramientas de Desarrollo

eas-sdk (TypeScript/JavaScript), indexer contract, EAS Explorer (easscan.org), GraphQL API, example resolvers

Madurez del Protocolo / Estandarización

Deployed protocol with versioned contracts (0.26 to 1.3.0 across networks); not an EIP or other standards-body specification.

Marco de Confianza

Attestations are signatures by an attester on a schema; whether to trust an attester is left to the consumer; the docs state the protocol does not judge the value of an attestation.

Dominio de Aplicación Objetivo

Reputation systems, provenance of information or assets, voting and governance, registries, social graphs, identity-adjacent credentials

Modelo de Despliegue

Per-chain singleton contracts (EAS and SchemaRegistry); onchain or offchain attestations; on OP-Stack chains the contracts sit at the standard predeploy addresses 0x4200…0021 and 0x4200…0020

Tipo de Estándar

Attestation Standard

Ecosistema

Ethereum and EVM networks

Relaciones

Cómo se conecta esta herramienta con otras herramientas y organizaciones, según relaciones revisadas por el responsable de datos de OpenHaven. Describen cómo se conectan los proyectos, no su calidad.

Construido sobre: Ethereum
Almacenamiento para: Human Passport
Base de: Human Passport
Windfall Protocol
Implementaciones conformes: Human Passport
Protocolo hablado por: Windfall Protocol