Custom ZK Credential Circuit Design

We design circuits for complex credential claims, including KYC/AML status, credit scores, and professional qualifications, using Circom 2.x and Noir. Circuits are optimized for minimal proof generation time.

Every circuit is built with on-chain verification costs as a primary constraint. We achieve up to 40% gas reduction versus baseline implementations through constraint minimization and strategic proof system selection.

All circuits undergo formal verification where possible and rigorous manual review against common vulnerabilities (under-constrained circuits, overflows). Our process follows best practices from leading ZK research teams.

We deliver more than circuits—we provide the full stack: prover/verifier contracts (Solidity), TypeScript SDKs for proof generation, and integration guides for seamless embedding into your dApp or backend.

We provide support for circuit upgrades, dependency management (e.g., Circom compiler updates), and performance monitoring to ensure your credential system remains secure and efficient over time.

Design circuits for proof-of-identity and proof-of-sanctions compliance without exposing user data. Enable selective disclosure for tiered access to DeFi protocols, meeting regulatory requirements while preserving user privacy.

Implement verifiable credential circuits that prove creditworthiness based on off-chain financial data. Lenders can verify a score threshold without accessing the underlying transaction history or personal identifiers.

Build ZK proofs for role-based access and attestations within corporate consortia or DAOs. Employees or members prove their authorization level or completion of mandatory training without revealing their specific identity on-chain.

Circuit design for verifiable health credentials (vaccination status, lab results). Patients generate ZK proofs to access services, proving medical facts to providers while keeping the full record private and under their control.

Develop sybil-resistant attestation circuits for airdrops, governance, and social applications. Users prove they are a unique human via biometric or trusted attestor, without creating a public, linkable on-chain identity.

Create circuits for proving ethical sourcing, fair trade certification, or carbon footprint compliance. Each step in the supply chain can issue a verifiable credential, with the final product offering a ZK proof of its full, compliant journey.