We architect and deploy custom smart contracts for DeFi, NFTs, and enterprise applications. Our team specializes in Solidity 0.8+, Rust (Solana), and Vyper, implementing OpenZeppelin standards and formal verification for maximum security.
LABS
Services
Selective Disclosure Protocol Development
We build cryptographic systems that enable users to prove specific verified attributes—like being over 18 or a resident of a permitted jurisdiction—without revealing their underlying identity documents. Achieve compliance while preserving user privacy.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built by engineers who have deployed over $1B+ in on-chain value.
- Full Lifecycle Support: From initial design and
Hardhat/Foundrytesting to mainnet deployment and post-launch monitoring. - Security-First: Every contract undergoes internal audits and is built for upgradeability via proxies (
ERC-1967). - Gas Optimization: We reduce transaction costs by 20-40% through efficient data structures and opcode-level tuning.
Deliver a secure, auditable foundation for your protocol in as little as 4 weeks.
key-features-cards
ENTERPRISE-GRADE PRIVACY
Core Capabilities of Our Selective Disclosure Systems
We build selective disclosure protocols that enable verifiable data sharing without exposing sensitive information, reducing compliance risk and unlocking new business models.
06
Cross-Platform SDKs & APIs
Receive production-ready SDKs for React, Node.js, and mobile (Flutter/React Native), plus a fully documented REST/GraphQL API for seamless backend integration.
React / Node.js
SDK Support
REST / GraphQL
API Types
benefits
STRATEGIC ADVANTAGES
Business Outcomes: Beyond Technical Implementation
Our Selective Disclosure Protocol development delivers tangible business results, accelerating your time-to-market while ensuring compliance and user trust.
01
Accelerated Compliance & Market Entry
Deploy a fully audited, W3C VC-compliant protocol in weeks, not months. We handle the complex cryptographic implementation so you can focus on your core product and user acquisition.
4-6 weeks
Average Deployment
W3C VC
Standards Compliant
02
Enhanced User Trust & Adoption
Implement privacy-preserving identity flows that give users granular control. This reduces onboarding friction and builds the credibility needed for high-value DeFi, institutional, and regulated applications.
Zero-Knowledge
Proof Integration
GDPR/CCPA
Privacy By Design
03
Reduced Operational & Legal Risk
Our battle-tested architecture minimizes data liability. By never storing raw PII and using selective disclosure, you significantly reduce your attack surface and compliance overhead.
Formal Verification
Security Standard
Off-Chain PII
Data Minimization
04
Future-Proof Interoperability
Build on a protocol designed for the decentralized identity ecosystem. Our implementations are compatible with leading DID methods (did:ethr, did:key) and verifiable data registries, ensuring long-term viability.
DIDComm v2
Messaging Ready
EIP-712/4361
Ethereum Integration
Selective Disclosure Protocol
Structured Development Packages
Compare our tiered packages for implementing Zero-Knowledge-based selective disclosure, from foundational audits to full-stack enterprise solutions.
| Feature | Starter | Professional | Enterprise |
|---|---|---|---|
Core ZK Circuit Audit | |||
Custom Attribute Schema Design | |||
Full-Stack SDK Integration | |||
Multi-Chain Deployment (EVM, Solana) | |||
Verifier Node Setup & Management | |||
Support & Response SLA | Email (72h) | Priority (24h) | Dedicated (4h) |
Compliance & Privacy Review | |||
Implementation Timeline | 2-3 weeks | 4-6 weeks | 8-12 weeks |
Starting Price | $15K | $50K | Custom |
how-we-deliver
PROVEN PROCESS
Our Development Methodology
Our systematic approach to Selective Disclosure Protocol (SDP) development ensures secure, scalable, and compliant solutions that integrate seamlessly with your existing identity stack.
01
Architecture & Design Review
We begin with a deep-dive analysis of your use case to design a compliant SDP architecture. We select optimal frameworks like W3C Verifiable Credentials, BBS+ signatures, or ZK-SNARKs to balance privacy, performance, and interoperability.
5+
Framework Options
2-3 days
Design Sprint
02
Secure Smart Contract Development
Our engineers write, test, and deploy the core on-chain logic for credential registry, revocation, and verification. We use Solidity 0.8+ with OpenZeppelin libraries and implement gas-efficient patterns for cost-effective operations.
100%
Test Coverage
OpenZeppelin
Security Standard
03
Off-Chain Verifier & Issuer SDKs
We build the critical off-chain components: issuer backends for credential creation and user-facing verifier SDKs for presentation. Our SDKs support multiple platforms (Web, Mobile) and are designed for easy developer integration.
< 50ms
Verification Time
3+
Language SDKs
05
Staging & Mainnet Deployment
We deploy your protocol on a testnet (Goerli, Sepolia) for final integration testing and user acceptance. Following client sign-off, we manage the secure, gas-optimized mainnet deployment with comprehensive monitoring setup.
99.9%
Deployment Success
24/7
Post-Launch Support
06
Compliance & Documentation
We deliver full technical documentation, API references, and integration guides. For regulated use cases, we provide architecture maps and data flow diagrams aligned with GDPR, eIDAS, and other privacy frameworks.
GDPR/eIDAS
Compliance Ready
Complete
Docs Delivered
use-cases
ENTERPRISE-READY USE CASES
Targeted Applications for Selective Disclosure
Our Selective Disclosure Protocol development delivers concrete business value by enabling secure, compliant, and user-centric data sharing. We build solutions that solve specific, high-impact problems for regulated industries and modern applications.
01
KYC/AML Compliance
Streamline user onboarding by allowing customers to share verified identity credentials (like proof of age or residency) without exposing their full identity document. Reduces data liability and accelerates compliance checks.
80%
Faster Onboarding
Zero-Knowledge
Proof Standard
02
Credit Scoring & DeFi
Enable undercollateralized lending by allowing users to prove a minimum credit score or income threshold from a trusted verifier, without revealing the exact score or sensitive financial history.
Selective Proofs
For Risk Assessment
ERC-20/4626
Protocol Integration
03
Healthcare Data Portability
Build HIPAA/GDPR-compliant systems where patients can share specific health records (e.g., vaccination status) with insurers or new providers, maintaining full ownership and audit trails of disclosures.
W3C VC
Standard Compliant
Patient-Centric
Data Control
04
Enterprise Access Control
Implement role-based access for corporate systems where employees prove employment status or department membership from an HR issuer, enabling seamless access to internal tools without centralized databases.
SSI Framework
Architecture
Revocable
Credentials
05
Age-Gated Commerce
Facilitate compliant age verification for alcohol, cannabis, or adult content platforms. Users prove they are over 21 via a trusted issuer, eliminating the need to store government ID copies.
< 1 Second
Verification Time
GDPR Compliant
Data Minimization
06
Supply Chain Provenance
Enable suppliers to selectively disclose certification proofs (organic, fair-trade, carbon footprint) to buyers at different stages of the chain, enhancing transparency while protecting business-sensitive data.
Immutable Audit
Trail
ERC-1155
Asset Tokens
Selective Disclosure Protocol Development
Frequently Asked Questions
Get clear answers on our development process, security, timelines, and support for building custom selective disclosure systems.
Our process follows a structured 4-phase methodology: Discovery & Design (1-2 weeks), where we define use cases and data schemas; Core Development (3-5 weeks), building the smart contracts and zero-knowledge circuits; Security Audit & Testing (2-3 weeks), including internal reviews and formal verification; and Deployment & Integration (1 week). We provide weekly demos and maintain a shared backlog for full transparency.
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