AttestationStation (Optimism) vs EAS: Attestation Infrastructure for Web3

Native to Optimism's Superchain: Deployed as a core primitive on Optimism Mainnet and all OP Stack chains (Base, Zora, Mode). This ensures zero deployment overhead and native gas optimization for apps within the ecosystem. This matters for teams building exclusively on the Superchain who prioritize simplicity and deep chain integration.

Schema-less design: Attestations are simple key-value pairs (about, key, val), offering unparalleled flexibility for rapid prototyping. Extremely low gas costs: ~40k gas for an attestation on Optimism, making it ideal for high-volume, low-value data like social proofs, game achievements, or permissioning. This matters for applications requiring cost-effective, unstructured on-chain data.

Robust schema system: Requires predefined, reusable schemas (e.g., vote, review, credential), ensuring data consistency and interoperability across thousands of applications. Serves as the de facto standard with integrations across Ethereum, Arbitrum, Polygon, and 15+ other chains. This matters for projects needing verifiable, structured data that must be understood universally, like verifiable credentials or DAO governance.

Optimism-native, ultra-low cost: Attestations cost <$0.01 on Optimism. This matters for high-volume, cost-sensitive applications like social graphs, gaming achievements, or permissioning. Its minimalist, permissionless design makes integration straightforward.

Optimism Superchain-centric: Primarily serves the OP Stack ecosystem (Optimism, Base, Mode). This matters if your product is exclusively built on the Superchain and values deep native integration. However, it's a weaker choice for multi-chain or Ethereum L1-centric strategies.

Industry-standard schema registry: EAS's structured schema system enables verifiable, composable data across chains. This matters for reputation systems, credentialing (like Gitcoin Passport), and cross-chain applications where a universal standard is critical for adoption.

Deployed on 10+ chains (Ethereum, Arbitrum, Polygon, Base, etc.) with a robust SDK and explorer. This matters for protocols requiring broad reach, established tooling, and avoiding vendor lock-in. The trade-off is potentially higher gas costs on some networks.

Deployed on 10+ major chains including Ethereum, Optimism, Arbitrum, and Base. This creates a unified, portable schema registry and attestation format. This matters for protocols like Worldcoin or Gitcoin Passport that require consistent credential verification across ecosystems.

Sophisticated schema system supporting complex data types and off-chain attestations via eas.encodeOffchain(). Features on-chain revocation with individual or schema-wide controls. This matters for enterprise use cases like KYC/AML credentials or revocable work credentials from Verax or Disco.

More complex integration requiring understanding of schemas, registries, and timestamps. Higher gas costs for on-chain attestations versus simpler models. This matters for developers seeking a minimal, cost-effective solution for simple reputation data or internal tracking.

Extremely simple, single-contract design on Optimism. Create attestations with just attest(about, key, val). This matters for rapid prototyping, gas-efficient on-chain reputation systems (like Optimism's Retro Funding rounds), or projects deeply integrated into the OP Stack.

Ultra-low gas fees on Optimism L2. Schema-less design offers maximum flexibility for key-value pairs. This matters for high-volume, low-value attestations (e.g., voting, likes, simple badges) where cost and developer overhead are primary constraints.

No built-in revocation or rich schemas. Primarily Optimism-centric, lacking EAS's native multi-chain portability. This matters for applications requiring credential invalidation, complex data structures, or interoperability with attestations on chains like Arbitrum or Polygon.