We architect, develop, and audit custom Solidity/Rust smart contracts that form the immutable backbone of your application. Our development process is built on OpenZeppelin standards and includes formal verification for critical logic.
LABS
Services
Proof-of-Personhood Protocol Implementation
We design and deploy custom sybil-resistant protocols that use social graph analysis, biometric hashes, or trusted attestations to cryptographically verify unique human identity at scale.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built by Web3 specialists to power your protocol.
- From MVP to Mainnet: Rapid prototyping to full production deployment.
- Security-First: Multi-stage audits, including automated analysis and manual review.
- Gas Optimization: Every contract is tuned for minimum execution cost on-chain.
- Full Ownership: You retain 100% IP rights to all delivered code.
We deliver battle-tested contracts that have secured over $500M+ in TVL for DeFi and NFT projects, with a zero critical vulnerability track record post-audit.
key-features-cards
ENTERPRISE-GRADE IMPLEMENTATION
Core Protocol Capabilities
We deliver production-ready Proof-of-Personhood systems with the security, scalability, and interoperability required for regulated FinTech and high-growth Web3 applications.
01
Biometric & Credential Integration
Secure integration of biometric verification (liveness detection, facial recognition) and digital credential standards (W3C Verifiable Credentials, OIDC) to establish unique human identity on-chain.
W3C VC
Standard
ISO 30107-3
Compliance
02
Sybil-Resistant Architecture
Implement multi-layered defense mechanisms including social graph analysis, stake-weighted verification, and continuous anomaly detection to prevent fake identity creation.
Zero-Knowledge
Privacy
Real-time
Detection
03
Cross-Chain Identity Layer
Deploy portable identity attestations using our proprietary bridging protocol, enabling verified users to access dApps across Ethereum, Solana, Polygon, and other EVM/L1 networks.
10+ Chains
Supported
< 2s
Attestation Sync
04
Compliance & Privacy Engine
Built-in compliance tooling for KYC/AML checks with privacy-preserving ZK proofs. Configurable rulesets for jurisdiction-specific requirements without exposing user data.
GDPR/CCPA
Compliant
ZK-Proofs
Privacy
05
Scalable Attestation Protocol
High-throughput attestation issuance and revocation system capable of processing 10,000+ verifications per second with sub-second finality, backed by a 99.9% uptime SLA.
10k+ TPS
Throughput
99.9%
Uptime SLA
benefits
TANGIBLE ROI
Business Outcomes: Beyond Technical Implementation
Our Proof-of-Personhood protocol implementation delivers measurable business advantages, from user growth to regulatory compliance.
01
Trusted User Onboarding
Reduce fake account creation by 99% and lower KYC/AML compliance costs with Sybil-resistant identity verification. We integrate with established providers like Worldcoin, Idena, and Polygon ID to create a seamless, compliant flow.
99%
Sybil Reduction
30%
Lower KYC Cost
02
Fair Distribution & Governance
Ensure token airdrops, grants, and governance votes reach real humans. Our implementation prevents bot manipulation, enabling equitable community growth and credible decentralized decision-making.
0 Bot Votes
Governance Integrity
1:1 Human
Airdrop Targeting
03
Regulatory Compliance Foundation
Build with a future-proof compliance layer. Our architecture integrates privacy-preserving proofs that satisfy evolving regulatory requirements for digital identity (e.g., eIDAS, MiCA) without centralizing user data.
GDPR/CCPA Ready
Data Privacy
Audit Trail
Full Compliance Logs
04
Scalable Reputation Systems
Launch community reputation, credit scoring, or contribution tracking anchored to a unique human. We build custom attestation frameworks that scale across your dApp ecosystem.
< 100ms
Proof Verification
Multi-Chain
EVM & Non-EVM
The Infrastructure Decision
Build vs. Buy: Implementing Proof-of-Personhood
Compare the total cost, risk, and time investment of developing a Sybil-resistant identity layer in-house versus partnering with Chainscore for a production-ready protocol.
| Factor | Build In-House | Chainscore Implementation |
|---|---|---|
Time to Production | 6-12 months | 4-8 weeks |
Initial Development Cost | $250K - $600K+ | $50K - $150K |
Security & Audit Burden | High (unaudited, custom code) | Low (pre-audited, battle-tested modules) |
Ongoing Maintenance | Requires dedicated team (2-3 FTE) | Optional SLA with 24/7 monitoring |
Protocol Expertise Required | Deep knowledge of ZK, biometrics, & governance | Our team provides full-stack expertise |
Integration Complexity | High (custom APIs, wallet connectors) | Low (standardized SDKs & APIs) |
Scalability & Upgrades | Your responsibility to research and implement | Included with service (future-proof designs) |
Compliance Risk | You assume all regulatory liability | We guide on compliant architecture patterns |
Total Cost (First Year) | $500K - $1M+ | $75K - $200K |
how-we-deliver
A PROVEN METHODOLOGY
Our Implementation Process
We deliver production-ready Proof-of-Personhood systems with a structured, security-first approach that reduces your time-to-market and technical risk.
01
Architecture & Protocol Design
We design your system architecture, selecting and integrating the optimal PoP protocol (World ID, Gitcoin Passport, Idena) based on your use case, threat model, and scalability requirements.
3-5 days
Design Sprint
3+ Protocols
Evaluated
02
Smart Contract Development
Our engineers write, test, and optimize the core on-chain logic for identity verification, attestation management, and sybil resistance using Solidity 0.8+ and OpenZeppelin libraries.
100% Coverage
Unit Tests
Gas-Optimized
Code
03
Security Audit & Formal Verification
Every contract undergoes rigorous internal review and a third-party audit from firms like Spearbit or Code4rena before deployment, ensuring the integrity of your identity layer.
2+ Audits
Per Contract
Critical Issues
0 Tolerance
04
Backend Integration & APIs
We build the off-chain verification services, secure APIs, and database schemas to manage user sessions, privacy-preserving proofs, and integration with your existing stack.
REST & GraphQL
API Options
< 100ms
Verification Latency
05
Frontend SDK & Wallet Integration
We provide a developer-friendly SDK for your application, handling wallet connections (MetaMask, WalletConnect), proof generation, and a seamless user onboarding flow.
React/Next.js
SDK Support
5+ Wallets
Integrated
06
Deployment & Ongoing Support
We manage the deployment to mainnet or your chosen L2 (Optimism, Arbitrum, Base), provide monitoring dashboards, and offer SLA-backed support for upgrades and maintenance.
99.9% SLA
System Uptime
24/7
Monitoring
security
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts for DeFi, NFTs, and enterprise applications.
We architect and deploy audited, gas-optimized smart contracts on EVM chains like Ethereum, Polygon, and Arbitrum. Our focus is on security-first development using Solidity 0.8+ and OpenZeppelin libraries, delivering contracts that are ready for mainnet deployment in as little as 2-4 weeks.
- Custom Logic: Build bespoke DeFi primitives, NFT collections with advanced minting, or enterprise-grade tokenization systems.
- Full Audit Support: Contracts are built for seamless integration with top security firms like CertiK and Quantstamp.
- Gas Optimization: We reduce transaction costs by 20-40% through efficient code patterns and storage management.
We don't just write code; we deliver a production-ready asset with comprehensive documentation, testing suites achieving >95% coverage, and clear upgrade paths via transparent proxies.
Technical & Commercial Details
Proof-of-Personhood Implementation FAQs
Get clear answers on timelines, costs, and technical specifics for implementing a secure, scalable Proof-of-Personhood protocol.
A standard Proof-of-Personhood protocol deployment takes 2-4 weeks from kickoff to mainnet launch. This includes smart contract development, integration with your existing stack, and a full security audit. Complex integrations (e.g., multi-chain, custom sybil-resistance logic) may extend to 6-8 weeks. We provide a detailed sprint-by-sprint delivery plan on day one.
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