We architect and build custom blockchain systems tailored to your specific business logic and performance requirements. Our team delivers production-ready mainnet deployments within 6-12 weeks, handling everything from consensus mechanisms to node infrastructure.
LABS
Services
Privacy-Preserving Credential Systems
We design and implement secure, on-chain verification systems for off-chain credentials. Using zero-knowledge proofs, we enable your platform to gate access based on verified attributes—like diplomas or licenses—without exposing the underlying personal data.
Chainscore © 2026
overview
FULL-STACK ENGINEERING
Custom Blockchain Development
End-to-end blockchain solutions from protocol design to production deployment.
- Protocol Design: Custom
EVM-compatible chains,Substrate-based parachains, and application-specific rollups. - Core Development: Smart contract suites, cross-chain bridges, and validator/node client software.
- Infrastructure: Secure RPC endpoints, block explorers, indexers, and monitoring dashboards.
- Security: Formal verification, third-party audits (OpenZeppelin, CertiK), and bug bounty program setup.
We don't just build chains; we deliver the complete operational stack for your network to go live and scale.
key-features-cards
ENTERPRISE-GRADE INFRASTRUCTURE
Core Technical Capabilities We Deliver
We architect and deploy production-ready, privacy-preserving credential systems with battle-tested security and measurable performance guarantees.
01
Zero-Knowledge Proof Integration
Implement zk-SNARKs (Circom, Halo2) and zk-STARKs for selective disclosure of credential attributes, enabling verification without exposing underlying data. We ensure proof generation remains under 2 seconds for standard claims.
< 2 sec
Proof Generation
Circom/Halo2
Proven Circuits
02
Decentralized Identifier (DID) Wallets
Build secure, non-custodial wallets supporting W3C DIDs (did:ethr, did:key) and Verifiable Credential storage. Includes key management, selective sharing interfaces, and recovery mechanisms.
W3C Compliant
Standard
Non-Custodial
Architecture
03
On-Chain Registry & Revocation
Deploy gas-optimized smart contracts for credential status lists (Bitstring, Accumulator models) on Ethereum L2s or app-chains, ensuring instant, permissionless verification with sub-cent costs.
< $0.01
Check Cost
< 1 sec
Finality
04
Credential Schema Governance
Design and implement flexible schema management systems for issuing authorities, supporting versioning, attestation workflows, and compliance with industry standards like AnonCreds.
AnonCreds
Compatible
Versioned
Lifecycle
05
Cross-Platform Verifier SDKs
Provide lightweight SDKs for Web, Mobile (React Native/Flutter), and Backend (Node.js, Go) to enable seamless credential presentation and verification in your existing applications.
< 100KB
SDK Size
5+ Platforms
Supported
06
Security & Compliance Audits
Delieve systems pre-audited for cryptographic soundness and smart contract security. Our development follows OWASP guidelines and includes comprehensive threat modeling.
OWASP
Compliant
Pre-Audited
Delivery
benefits
DELIVERABLES
Business Outcomes for Your Platform
Our privacy-preserving credential systems deliver measurable results, from enhanced user trust to direct cost savings. Here’s what you can expect when you partner with Chainscore Labs.
01
Reduced Compliance & KYC Costs
Implement selective disclosure and zero-knowledge proofs to verify user attributes without exposing raw data. This slashes manual review overhead and ongoing compliance expenses.
60-80%
Cost Reduction
ISO 27001
Compliance Framework
02
Enhanced User Onboarding & Trust
Enable frictionless, reusable credentials for instant verification. Users control their data, building trust and increasing platform adoption and retention rates.
< 30 sec
Onboarding Time
W3C VC
Standard Compliant
03
Secure, Tamper-Proof Credential Issuance
Leverage our audited smart contracts and decentralized identifiers (DIDs) to issue verifiable credentials anchored on-chain, ensuring immutability and cryptographic proof of authenticity.
100%
Immutable Audit Trail
OpenZeppelin
Audited Code
05
Scalable Infrastructure with 99.9% Uptime
Deploy on our managed node infrastructure with enterprise-grade SLAs. Handle millions of credential verifications without compromising performance or privacy.
99.9%
Uptime SLA
< 100ms
Verification Latency
06
Faster Time-to-Market
Accelerate development with our pre-built modules for issuance, revocation, and verification. Go from concept to production-ready system in weeks, not months.
4-6 weeks
Production Deployment
Full SDK
Included
Compare Tiers
Structured Development Packages
Choose the right package for your privacy-preserving credential system, from MVP to enterprise-grade deployment.
| Feature | Starter | Professional | Enterprise |
|---|---|---|---|
Zero-Knowledge Proof Integration | |||
Custom Credential Schema Design | Basic | Advanced | Full Custom |
On-Chain Verification Contracts | |||
Off-Chain Issuance Server | |||
Multi-Chain Deployment Support | 1 Chain | Up to 3 Chains | Unlimited |
Security Audit & Penetration Testing | Automated Scan | Manual Review + Report | Full Audit + Formal Verification |
Integration Support | Documentation | Technical Guidance | Dedicated Engineer |
SLA & 24/7 Monitoring | 99.5% Uptime | 99.9% Uptime with 1h Response | |
Implementation Timeline | 4-6 Weeks | 8-12 Weeks | Custom |
Starting Price | $25,000 | $75,000 | Custom Quote |
how-we-deliver
BUILDING TRUST THROUGH TRANSPARENCY
Our Delivery Methodology
We deliver production-ready, secure credential systems with a predictable, phased approach that de-risks development and accelerates your time-to-market.
01
Architecture & Protocol Design
We design your system's core architecture, selecting the optimal privacy-preserving protocol (e.g., zk-SNARKs, BBS+ signatures) and defining the credential schema, issuance, and verification flows tailored to your use case.
2-3 weeks
Design Phase
3+ Protocols
Evaluated
02
Smart Contract Development
Secure, gas-optimized smart contracts for credential registry, revocation, and verification. Built with Solidity 0.8+, OpenZeppelin libraries, and comprehensive test suites covering edge cases.
100% Coverage
Test Target
OpenZeppelin
Security Base
03
Zero-Knowledge Circuit Implementation
Development of custom zk-SNARK or zk-STARK circuits (using Circom or Halo2) to enable selective disclosure and predicate proofs, ensuring user data privacy is mathematically guaranteed.
Circom / Halo2
Framework
Plonk / Groth16
Proof System
04
Security Audit & Formal Verification
Rigorous multi-stage security review, including automated analysis (Slither), manual auditing by our in-house experts, and optional formal verification for critical logic to eliminate vulnerabilities pre-deployment.
2+ Audits
Minimum
Critical: 0
Guarantee
05
SDK & Integration Support
We provide developer-friendly SDKs (TypeScript/JavaScript) and comprehensive documentation for seamless integration into your existing mobile or web applications, handling wallet interactions and proof generation.
TypeScript
Primary SDK
< 1 day
Integration Target
06
Deployment & Production Monitoring
Managed deployment to your chosen EVM-compatible network (Ethereum, Polygon, Arbitrum) with 24/7 monitoring, alerting for credential issuance anomalies, and performance dashboards.
99.9% SLA
System Uptime
< 2 sec
Verification P95
Privacy-Preserving Credential Systems
Frequently Asked Questions
Get clear answers on our development process, security, and timelines for implementing zero-knowledge identity solutions.
Our process follows four phases: Discovery & Design (1-2 weeks) to define use cases and architecture, Core Development (3-6 weeks) to build the smart contracts and ZK circuits, Security Audit & Testing (2-3 weeks) including internal and third-party reviews, and Deployment & Integration (1-2 weeks). We provide a dedicated technical lead and weekly sprint demos throughout.
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