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Compliance Transport & Institutional Interop Layer
Develop a universal standard for attaching attestations or compliance credentials to Ethereum transactions (via calldata trailers or structured metadata), enabling any wallet or dApp to transport and verify compliance proofs without modifying core contract logic or requiring bespoke integrations. The goal is to ensure open and protocol-agnostic interoperability while avoiding proprietary schemas, ERC-4337 incompatibility, centralized verification systems, or solutions that require protocol changes or lack a concrete draft EIP or reference implementation. The detailed proposal requirements can be found in the link under Resources.
Tags
- Privacy
Ecosystem Need
Privacy and compliance protocols each design their own method for moving proofs through transactions, fragmenting liquidity and interoperability. A shared transport layer would let different attestation formats interoperate across wallets and protocols, improving composability and allowing institutions to verify proofs securely without bespoke integrations. This work strengthens the modular privacy stack for Ethereum by creating the transport foundation that later registry, disclosure, and analytics layers can build on.
Hard Requirements
- Draft EIP with complete specification and reference implementation - Maintains signature validity and ERC-4337/bundler compatibility - Documented gas overhead analysis compared to base tx - Integration demo with at least one design partner (exchange, bridge, or wallet) - Solidity parser library and wallet SDK for attaching/verifying trailer data - Example verifier contracts for dApps, DEXs, or bridges
Soft Requirements
- Support for multiple attestation formats (zkSNARK, zkSTARK, TEE proofs) - Backwards compatibility with existing token standards - Developer tooling (SDK, testing framework, examples) - Clear governance model that ensures neutrality and extensibility
Resources
Timeline
Opens: Nov 3, 2025
Closes: Jan 3, 2026
Estimated Project Duration: 3–6 months
