We architect and deploy custom smart contracts that form the backbone of your protocol. Our development process is built for security and scale from day one, utilizing OpenZeppelin standards, up-to-date Solidity, and rigorous internal audits before deployment to Mainnet.
LABS
Services
Privacy-Preserving ZK Skill Verification
We develop systems where players prove skill levels or achievement tiers using zero-knowledge proofs, enabling gated content and verifiable credentials without exposing personal data.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, audited smart contracts built for production by Web3-native engineers.
- Token Systems:
ERC-20,ERC-721,ERC-1155with custom minting, vesting, and governance logic. - DeFi Primitives: Automated Market Makers (AMMs), lending/borrowing pools, staking, and yield aggregators.
- Enterprise Logic: Multi-signature wallets, access control, upgradeable proxy patterns, and cross-chain bridges.
- Full Audit Trail: Every contract includes comprehensive documentation, NatSpec comments, and a security review report.
We deliver production-ready contracts in 2-4 weeks, backed by a 99.9% uptime SLA and post-deployment support.
key-features-cards
ENGINEERED FOR ENTERPRISE
Core Technical Capabilities
Our ZK-powered verification infrastructure delivers production-ready, auditable, and scalable solutions for credentialing platforms, DAOs, and hiring marketplaces.
01
Zero-Knowledge Proof Generation
We implement zk-SNARKs and zk-STARKs to verify skills and credentials without exposing sensitive user data. Our circuits are optimized for minimal proof generation time and on-chain verification cost.
< 2 sec
Proof Gen Time
~$0.05
Avg. On-Chain Verify Cost
02
Custom Schema & Attestation Design
Design and deploy verifiable credential schemas (W3C VC, EIP-712) tailored to your specific skill domains—from coding assessments to professional certifications. We ensure semantic interoperability across platforms.
EIP-712
Standard
2-4 weeks
Schema Deployment
03
On-Chain Registry & Verification
Deploy and manage immutable, gas-optimized smart contract registries (Ethereum, L2s, Solana) for storing credential hashes and ZK proof verification results. Includes permissioned access controls and revocation mechanisms.
99.9%
Uptime SLA
OpenZeppelin
Security Audit
04
Prover Infrastructure & APIs
Scalable backend services for proof generation and validation. We provide REST & GraphQL APIs with SDKs (JS/TS, Python) for seamless integration into your existing applicant tracking or learning management systems.
< 100ms
API Latency P99
10k+ TPS
Throughput Capacity
05
Privacy-Preserving Analytics
Aggregate skill and credential insights using fully homomorphic encryption (FHE) and MPC techniques. Gain market intelligence on talent pools without compromising individual user privacy.
FHE/MPC
Techniques
SOC 2
Data Compliance
06
Cross-Chain Interoperability
Enable credential portability across Ethereum, Polygon, Arbitrum, Base, and Solana using our lightweight message passing layer. Skills verified on one chain are recognized on all supported networks.
5+
Networks Supported
CCIP/Axelar
Bridge Protocols
benefits
DELIVERABLES
Business Outcomes for Your Platform
Our privacy-preserving ZK skill verification service delivers concrete, measurable results for your talent platform, from enhanced security to accelerated user onboarding.
use-cases
PROVEN USE CASES
Applications Across GameFi & Metaverse
Our zero-knowledge skill verification protocol unlocks new dimensions of player agency, asset interoperability, and verifiable reputation. See how leading projects are integrating privacy-first credentials.
ZK Skill Verification Platform
Phased Development Tiers
Structured development packages to launch a production-ready, privacy-preserving credential system.
| Feature | Proof of Concept | Production Ready | Enterprise Scale |
|---|---|---|---|
ZK Circuit Development | |||
On-Chain Verifier Smart Contracts | |||
Full Security Audit (CertiK/OpenZeppelin) | |||
Multi-Chain Deployment (EVM/L2) | |||
Custom Issuer Dashboard | |||
API & SDK for Integration | Basic | Full-featured | Full-featured + White-label |
Uptime & Performance SLA | N/A | 99.5% | 99.9% |
Dedicated Technical Support | Slack Channel | 24/7 PagerDuty | |
Implementation Timeline | 4-6 weeks | 8-12 weeks | 12-16 weeks |
Starting Price | $25K | $80K | Custom Quote |
Why On-Chain Privacy is a Competitive Advantage
ZK Verification vs. Traditional Methods
A technical and operational comparison of privacy-preserving skill verification approaches for Web3 talent platforms, HR tech, and credentialing systems.
| Verification Factor | Traditional Centralized Database | Public On-Chain Records | Chainscore ZK Verification |
|---|---|---|---|
Data Privacy & User Control | |||
Immutable Proof of Authenticity | |||
Resistance to Censorship/Deplatforming | |||
Developer Time to Integrate | 2-4 weeks | 3-6 weeks | 1-2 weeks |
Verification Cost per Credential | $0.10 - $1.00 | $0.50 - $5.00 (gas) | < $0.01 (optimized) |
Proof Generation Latency | < 100ms | N/A | < 2 seconds |
Cryptographic Proof Size | N/A | N/A | < 2 KB |
Supported Credential Types | Limited by vendor | Plain text only | Any off-chain data (PDFs, videos, scores) |
Auditability & Compliance | Opaque, proprietary | Fully transparent | Selectively disclosable |
Infrastructure Maintenance | High (servers, security) | High (node ops, gas management) | Managed Service (SLA) |
ZK Verification
Frequently Asked Questions
Get clear answers on how our privacy-preserving skill verification service works for your platform.
Users complete a skill assessment on your platform. Our system generates a zero-knowledge proof that verifies they passed the assessment without revealing their specific answers or score. The proof is issued as a verifiable credential (e.g., W3C VC) to their wallet. Third parties (like employers) can instantly verify the credential's authenticity and the proof's validity on-chain, confirming skill mastery with 100% cryptographic certainty while preserving 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