We architect, develop, and audit custom Solidity and Rust smart contracts that form the backbone of your application. Our focus is on security-first development, gas optimization, and upgradeable architecture to protect assets and future-proof your protocol.
LABS
Services
ZK-Proof KYC Verification Bridge
Engineer custom bridges that use zero-knowledge proofs (zk-SNARKs via Circom) to allow users to prove KYC compliance from one system to another without revealing underlying PII, focusing on privacy-preserving portability.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built for scale and compliance.
From token standards to complex DeFi logic, we deliver battle-tested code with a 100% audit-pass rate for initial deployments.
- Token Systems: Custom
ERC-20,ERC-721, andERC-1155implementations with advanced features like vesting, minting controls, and tax mechanics. - DeFi & DAOs: Automated Market Makers (AMMs), staking pools, governance modules, and multi-signature treasuries.
- Security Guarantees: All code follows
OpenZeppelinstandards and undergoes internal review plus integration with top audit firms. - Full Lifecycle: We handle deployment, verification on Etherscan, and provide ongoing maintenance support.
key-features-cards
ARCHITECTURE & SECURITY
Core Technical Capabilities
Our ZK-Proof KYC Verification Bridge is engineered for enterprise-grade security, regulatory compliance, and seamless integration. We deliver verifiable privacy and interoperability without compromising on-chain performance.
benefits
DELIVERABLES & GUARANTEES
Business Outcomes for Your Platform
Our ZK-Proof KYC Verification Bridge delivers measurable results that directly impact your platform's compliance, user experience, and bottom line. We focus on outcomes, not just features.
02
Frictionless Onboarding
Reduce user drop-off by up to 70% with near-instant verification. Users prove their KYC status in seconds using a reusable ZK credential, eliminating repetitive document uploads and manual reviews for every new platform interaction.
< 2 sec
Verification Time
70%
Lower Drop-off
04
Audited Security & Zero-Knowledge Guarantees
Built with industry-standard ZK frameworks (Circom, Halo2) and audited for cryptographic soundness. We guarantee the mathematical integrity of proofs, ensuring user data remains private and verification logic is tamper-proof.
Formal Audit
Security Standard
ZK-SNARK/STARK
Proof Systems
05
Reduced Operational Cost & Liability
Shift from costly, manual KYC review processes to an automated, cryptographic system. Dramatically lower compliance overhead and eliminate the liability risks associated with storing centralized databases of sensitive user PII.
90%
Lower OpEx
$0
PII Storage Cost
06
Faster Time-to-Market
Integrate a production-ready ZK KYC bridge in weeks, not months. We provide a complete SDK, smart contract suite, and verifier infrastructure, allowing your team to focus on core product development.
< 4 weeks
Integration Time
Full SDK
Developer Kit
Infrastructure Decision Matrix
ZK Bridge vs. Traditional KYC Portability
A technical comparison of infrastructure approaches for portable, compliant identity verification, highlighting the operational and security advantages of a ZK-Proof bridge.
| Critical Factor | Traditional KYC Portability | Chainscore ZK-Proof Bridge |
|---|---|---|
Data Privacy & Sovereignty | Centralized data silo or custodian holds sensitive PII, creating a single point of failure and liability. | User retains control; only zero-knowledge proofs of verification are shared. No PII is stored on-chain or by the bridge. |
Cross-Platform Interoperability | Limited to pre-established partnerships; requires custom API integrations and new data-sharing agreements per platform. | Protocol-agnostic; verified credentials can be used across any EVM or non-EVM chain that integrates the verification contract. |
Developer Integration Time | 3-6 months for vendor evaluation, legal review, API integration, and compliance testing. | 2-4 weeks to integrate our SDK and smart contract verification module into your dApp flow. |
Regulatory Audit Trail | Opaque; difficult to prove compliance retroactively without exposing user data. | Immutable, cryptographic proof of verification on-chain. Provides a transparent, privacy-preserving audit log. |
User Friction & Onboarding | High. Requires repeating full KYC process for each new application, damaging UX and conversion. | Low. One-time verification unlocks access across the ecosystem via a simple wallet signature. |
Ongoing Compliance Burden | High. Your team manages data storage compliance (GDPR, CCPA), security audits, and vendor management. | Shifted to Chainscore. We maintain the verification infrastructure, security audits, and protocol updates. |
Estimated Annual Total Cost | $150K - $500K+ (vendor fees, legal, engineering maintenance, security overhead). | $50K - $150K (predictable subscription or usage-based model with included support). |
how-we-deliver
PROVEN METHODOLOGY
Our Development & Integration Process
A streamlined, security-first approach to deploying your ZK-Proof KYC Verification Bridge. We deliver a production-ready system, not just a proof-of-concept.
01
Architecture & Protocol Design
We design your custom ZK circuit architecture and smart contract system, selecting the optimal proving scheme (Groth16, Plonk) and L1/L2 settlement layer based on your throughput and cost requirements.
2-3 weeks
Design Phase
3+ Options
Architecture Reviewed
02
Circuit Development & Optimization
Our cryptographers implement and rigorously optimize the zero-knowledge circuits for KYC checks. We focus on minimizing proof generation time and on-chain verification gas costs.
< 2 sec
Avg. Proof Gen
~200k gas
Target Verification
04
Backend API & Integration
We build the off-chain prover service and a secure, documented REST/GraphQL API for your application to submit KYC data and receive verification proofs, complete with rate limiting and monitoring.
99.9% SLA
API Uptime
< 100ms
P95 Latency
05
Compliance & Data Privacy Setup
We configure the system for GDPR/CCPA compliance, implementing secure data handling practices, user consent flows, and audit trails for regulator-ready KYC verification.
End-to-End
Data Encryption
Immutable Logs
Audit Trail
security-compliance
FULL-STACK INFRASTRUCTURE
Custom Blockchain Development
End-to-end blockchain solutions from protocol design to production deployment.
We architect and build bespoke blockchain networks and dApps tailored to your business logic. Our full-cycle development delivers production-ready systems, not just proof-of-concepts.
- Private & Consortium Chains: Deploy
Hyperledger FabricorEVM-compatiblenetworks with custom consensus. - Smart Contract Suites: Secure
Solidity/Rustdevelopment for DeFi, NFTs, and enterprise workflows. - Full-Stack dApps: Integrated frontends (
React/Next.js) withWeb3.js/ethers.jsbackends.
Reduce your time-to-market from months to weeks with our battle-tested development frameworks and reusable modular components.
Our process includes comprehensive security audits, gas optimization, and mainnet deployment support. We provide clear documentation and handover, ensuring your team owns the technology.
ZK-Proof KYC Verification Bridge
Frequently Asked Questions
Get clear answers on how our zero-knowledge KYC bridge integrates with your platform, from security to deployment.
Our bridge acts as a modular, API-first service that plugs into your existing sign-up or transaction flow. When a user needs to verify, they are redirected to our secure verification portal. There, they submit their KYC documents. Our system generates a zero-knowledge proof of their verification status and a unique, privacy-preserving identifier. This proof and identifier are then relayed back to your smart contract or backend via a secure API, allowing you to grant access or permissions without ever handling the user's raw personal data. The entire process maintains compliance while ensuring user privacy.
ENQUIRY
Get In Touch
today.
Our experts will offer a free quote and a 30min call to discuss your project.
NDA Protected
Confidentiality24h Response
Time to ValueDirectly to Engineering Team
No Sales Fluff10+
Protocols Shipped
$20M+
TVL Overall