Secure, production-ready smart contracts built by Web3 experts for your protocol or application.
We architect and deploy audit-ready smart contracts for tokens, DeFi protocols, and NFT platforms. Our development process ensures gas optimization, upgradeability patterns, and comprehensive test coverage (>95%).
Deliver a secure, scalable foundation for your product in 2-4 weeks.
Our development stack includes:
Solidity 0.8+, Hardhat, FoundryERC-20, ERC-721, ERC-1155, ERC-4626, and custom implementationsOpenZeppelin libraries and formal verification toolsTypical Deliverables:
We build production-grade, privacy-preserving identity infrastructure for DeFi. Every system is engineered for security, scalability, and seamless integration.
Design and implement custom zero-knowledge circuits (using Circom, Halo2, or Noir) to prove identity attributes without revealing underlying data. We optimize for proof generation speed and verification cost.
Deploy and manage gas-optimized verifier smart contracts (Solidity 0.8+) for on-chain proof validation. Issue soulbound attestations (ERC-4973/ERC-721) as verifiable credentials.
Integrate a client-side SDK for credential issuance and proof generation. Supports EIP-4361 (Sign-In with Ethereum) and W3C Verifiable Credentials for a seamless user experience.
Implement rule-based engines for KYC/AML checks and risk scoring that operate on ZK proofs. Enables regulatory compliance while maintaining user privacy by default.
Provision and manage scalable, fault-tolerant backend services for proof generation. Includes load balancing, monitoring, and 99.9% uptime SLA for critical identity operations.
Deliver comprehensive security reviews covering ZK circuits, smart contracts, and system architecture. Includes formal verification of critical logic and penetration testing.
Our Zero-Knowledge Identity Verification service delivers measurable infrastructure improvements, directly enhancing your protocol's security, compliance, and user experience.
Implement KYC/AML checks via ZK proofs, enabling regulatory adherence without collecting or storing sensitive user PII. Users prove eligibility without revealing identity data.
Integrate robust, on-chain identity verification to prevent bot farms and Sybil attacks. Ensure fair airdrops, governance, and reward distribution to genuine users.
Deploy reusable, non-custodial ZK identity credentials. Users maintain a single verified identity that works across your DeFi suite, eliminating repetitive KYC.
Leverage our optimized ZK circuits and proving systems for cost-effective on-chain verification, designed to scale with your user base without prohibitive gas costs.
Receive a fully audited SDK and smart contract suite, built with OpenZeppelin standards. We provide end-to-end integration support for a seamless launch.
Evaluating the total cost, risk, and time commitment for developing a custom Zero-Knowledge identity verification system versus leveraging Chainscore's managed service.
| Factor | Build In-House | Chainscore Managed Service |
|---|---|---|
Time to Production | 6-12 months | 4-8 weeks |
Initial Development Cost | $250K - $600K+ | $50K - $150K |
Security Audit Requirement | High (Unaudited Risk) | Included (Pre-Audited) |
Ongoing Maintenance & Updates | Your team (2-3 FTE) | Fully Managed |
ZK-Circuit Expertise Required | Senior Cryptographer (Hire/Build) | Provided by Chainscore |
Integration Complexity | High (Custom SDKs, Wallets) | Low (API & SDK) |
Compliance & Privacy Review | Your Legal Team | Advisory Included |
Scalability & Performance Tuning | Your DevOps Team | Managed SLA (99.9% Uptime) |
Total Cost of Ownership (Year 1) | $500K - $1M+ | $80K - $200K |
A proven, four-phase methodology to design, build, and deploy production-ready ZK identity solutions for DeFi, ensuring regulatory compliance without sacrificing user privacy or protocol security.
We map your KYC/AML requirements to a zero-knowledge proof architecture, selecting the optimal ZK-SNARK or ZK-STARK framework (e.g., Circom, Halo2) and designing the credential schema for seamless integration with your DeFi protocol.
Our cryptographers write and rigorously optimize the ZK circuits that power your verification logic. We focus on minimizing proof generation time and gas costs for on-chain verification, using libraries like snarkjs and circomlib.
We deploy the verifier smart contracts (Solidity/Vyper) and build a frontend SDK for your application. This handles proof generation, wallet connection, and the submission of verified claims to your protocol's access controls.
Every component undergoes internal review and a third-party audit from firms like Spearbit or Code4rena. We manage the mainnet deployment, provide monitoring dashboards, and document the full system for your team.
Secure, audited smart contracts built for production on EVM and Solana.
We architect and deploy custom, gas-optimized smart contracts that form the backbone of your protocol. Our development process is built for security and scalability from day one.
Solidity 0.8+ or Rust, using OpenZeppelin libraries and established security patterns.CertiK or Quantstamp.mainnet/testnet, verification on Etherscan/Solscan, and provide upgradeability strategies using Transparent Proxy or UUPS patterns.Reduce your time-to-market and technical risk with battle-tested contract architecture.
Our deliverables include comprehensive documentation, a full test suite with >95% coverage, and integration support for your front-end and backend systems.
Get clear answers on how our Zero-Knowledge Identity Verification service integrates with your DeFi protocol, from timeline and pricing to security and support.
We implement a modular, on-chain identity layer using Circom and Noir for circuit design, generating ZK proofs that verify user credentials (like KYC status or accredited investor status) without revealing the underlying data. The proof is verified by a smart contract on your chosen chain (Ethereum, Polygon, zkSync), granting access to gated DeFi pools or features. We handle the full stack: circuit logic, proof generation client SDK, and verifier contracts.
Our experts will offer a free quote and a 30min call to discuss your project.