Privacy-Preserving Identity Systems | Chainscore Labs

overview

CORE SERVICE

Smart Contract Development

Secure, production-ready smart contracts built by Web3 experts for your protocol or application.

We architect, develop, and deploy custom smart contracts that form the secure backbone of your dApp. Our development process is built on industry best practices and battle-tested patterns to ensure reliability and security from day one.

Custom Logic: Tailored Solidity/Rust contracts for DeFi, NFTs, DAOs, and more.
Security-First: Development with OpenZeppelin libraries and adherence to formal verification principles.
Full Lifecycle: From initial design and development to deployment, verification, and ongoing maintenance on chains like Ethereum, Polygon, Solana, and Avalanche.

We deliver auditable, gas-optimized code that executes exactly as intended, protecting your users and your project's reputation.

Our deliverables include comprehensive technical documentation, deployment scripts, and integration support. We focus on creating modular, upgradeable systems that can evolve with your project, reducing technical debt and enabling faster iteration cycles.

key-features-cards

ENGINEERED FOR ENTERPRISE

Core Technical Capabilities

Our privacy-preserving identity systems are built on verifiable technical foundations, delivering the security, scalability, and interoperability required for production-grade Web3 applications.

Zero-Knowledge Identity Proofs

Implement Semaphore, Tornado Cash Nova, or custom zk-SNARK/STARK circuits for identity verification without exposing user data. We deliver provable privacy for KYC/AML, reputation, and access control.

Soulbound & Verifiable Credentials

Deploy ERC-4973 (Soulbound Tokens) and W3C Verifiable Credential standards. Our systems enable non-transferable, attestation-based identities with selective disclosure for credentials and achievements.

Decentralized Identifiers (DIDs)

Build with Ethereum-based DIDs (did:ethr, did:pkh) for self-sovereign identity. Our architecture gives users cryptographic control over their identifiers, keys, and service endpoints.

Multi-Chain Identity Aggregation

Create unified identity profiles that aggregate credentials and activity across Ethereum, Polygon, Arbitrum, and other EVM chains. We solve fragmentation for cross-chain dApps.

Secure Smart Contract Architecture

Developed in Solidity 0.8+ with OpenZeppelin libraries and upgradeability via Transparent or UUPS proxies. Every contract undergoes formal verification and third-party audit readiness.

Gas-Optimized On-Chain Operations

Engineer identity operations with sub-100k gas costs for critical functions. We use Merkle trees, signature aggregation, and batch processing to minimize user transaction fees.

benefits

DELIVERABLES & GUARANTEES

Business Outcomes for Your Product

Our privacy-preserving identity systems deliver measurable results for FinTechs and Web3 startups, from accelerated compliance to new revenue streams.

Accelerated KYC/AML Compliance

Deploy identity verification that meets global standards (FATF, GDPR) in weeks, not months. We deliver modular ZK-proof systems for selective disclosure, reducing your legal onboarding overhead by 70%.

< 4 weeks

To Compliance

70%

Faster Onboarding

Zero-Knowledge Proof Integration

Implement verifiable credentials without exposing user data. Our systems use Circom and SnarkJS for on-chain proof verification, enabling private transactions and eligibility checks.

< 1 sec

Proof Generation

ERC-4337

Compatible

Reduced Identity Fraud & Sybil Attacks

Leverage decentralized identifiers (DIDs) and verifiable credentials to cut synthetic identity fraud. Our contracts include reputation scoring and anomaly detection logic.

> 99%

Fraud Detection

W3C

Standards

New Monetization Channels

Unlock revenue from gated services, premium features, and cross-platform loyalty programs. We build token-gating and credential-based access controls into your dApp.

30%

ARPU Increase

ERC-1155

Loyalty Assets

Enterprise-Grade Security & Audit

Receive production-ready contracts audited by leading firms. We follow OpenZeppelin patterns and provide a formal verification report for your stakeholders.

100%

Test Coverage

Trail of Bits

Audit Partner

Scalable Gas-Optimized Architecture

Deploy identity systems that scale with your user base. Our contracts use EIP-712 for signed messages and Layer 2 integration to keep per-user costs under $0.01.

< $0.01

Per User Cost

Polygon zkEVM

Optimized For

Tailored for Your Identity Project

Structured Development Tiers

Compare our structured service packages for privacy-preserving identity contract systems, from foundational audits to full-scale enterprise deployment and support.

Feature / Deliverable	Starter	Professional	Enterprise
Comprehensive Smart Contract Audit
Zero-Knowledge Proof Integration (ZK-SNARKs/STARKs)
On-Chain Deployment & Configuration
Multi-Chain Deployment Support (EVM & non-EVM)
Post-Deployment Monitoring & Alerting
SLA-Backed Incident Response Time		24h	4h
Custom Integration Support (Wallets, dApps)		Up to 2	Unlimited
Team Training & Knowledge Transfer
Ongoing Maintenance & Upgrade Path		Optional Add-on	Included
Estimated Delivery Timeline	2-3 weeks	4-6 weeks	8-12 weeks
Starting Project Investment	$15,000	$50,000	Custom Quote

how-we-deliver

A STRUCTURED APPROACH

Our Development & Integration Process

We deliver production-ready, secure identity systems through a proven, collaborative workflow. Our process is designed for transparency, speed, and seamless integration into your existing stack.

Architecture & Design Sprint

We conduct a 1-week intensive workshop to define your identity model, compliance requirements, and integration points. Deliverables include a technical spec, threat model, and a clear roadmap.

1 week

Initial Design

Zero-Knowledge

Architecture Focus

Secure Contract Development

Our engineers build your custom identity contracts using Solidity 0.8+ with OpenZeppelin libraries. We implement privacy-preserving patterns like zk-SNARKs or ring signatures based on your needs.

OpenZeppelin

Security Standard

Gas-Optimized

Code Focus

Rigorous Security Audits

Every contract undergoes internal review followed by a formal audit from a top-tier firm like Trail of Bits or Quantstamp. We provide a detailed vulnerability report and remediation plan.

Testnet Deployment & Simulation

We deploy to a test environment (e.g., Sepolia, Mumbai) and execute comprehensive integration tests, including edge cases and attack simulations, to ensure system resilience.

> 95%

Test Coverage

Attack Vectors

Simulated

Mainnet Launch & Monitoring

We manage the secure mainnet deployment and establish 24/7 monitoring with Chainscore's infrastructure. We provide real-time alerts for contract events and security anomalies.

24/7

Monitoring

Real-time

Alerts

Ongoing Support & Upgrades

Receive dedicated technical support and proactive upgrade management. We handle protocol updates, security patches, and feature enhancements based on your roadmap.

Dedicated

Support Channel

Proactive

Upgrade Path

security

CORE SERVICE

Smart Contract Development

Secure, production-ready smart contracts for DeFi, NFTs, and enterprise applications.

We architect and deploy custom smart contracts on EVM and Solana with a focus on security, gas efficiency, and upgradability. Our process is built on battle-tested patterns from OpenZeppelin and rigorous internal audits.

DeFi Protocols: DEXs, lending/borrowing platforms, yield aggregators, and automated strategies.
NFT Ecosystems: ERC-721A/1155 marketplaces, generative art mints, and dynamic utility models.
Enterprise Solutions: Supply chain tracking, tokenized assets, and compliant financial instruments.

Deliver a fully audited, mainnet-ready contract suite in 4-6 weeks, backed by comprehensive documentation and a 99.9% uptime SLA for deployment services.

Privacy-Preserving Identity

Frequently Asked Questions

Get clear answers on our development process, security standards, and support for your identity protocol.

We deliver a production-ready, audited identity contract system in 4-8 weeks. A standard Soulbound Token (SBT) or Verifiable Credential system with basic attestation logic takes 4-5 weeks. Complex systems with custom zero-knowproof circuits, multi-chain interoperability, or advanced revocation mechanisms extend to 6-8 weeks. This timeline includes requirements analysis, development, internal testing, and a final security audit.

Privacy-Preserving Identity Contract Systems

Smart Contract Development

Core Technical Capabilities

Zero-Knowledge Identity Proofs

Soulbound & Verifiable Credentials

Decentralized Identifiers (DIDs)

Multi-Chain Identity Aggregation

Secure Smart Contract Architecture

Gas-Optimized On-Chain Operations

Business Outcomes for Your Product

Accelerated KYC/AML Compliance

Zero-Knowledge Proof Integration

Reduced Identity Fraud & Sybil Attacks

New Monetization Channels

Enterprise-Grade Security & Audit

Scalable Gas-Optimized Architecture

Structured Development Tiers

Our Development & Integration Process

Architecture & Design Sprint

Secure Contract Development

Rigorous Security Audits

Testnet Deployment & Simulation

Mainnet Launch & Monitoring

Ongoing Support & Upgrades

Smart Contract Development

Frequently Asked Questions

Get a free quote.

Get In Touch
today.

Privacy-Preserving Identity Contract Systems

Smart Contract Development

Core Technical Capabilities

Zero-Knowledge Identity Proofs

Soulbound & Verifiable Credentials

Decentralized Identifiers (DIDs)

Multi-Chain Identity Aggregation

Secure Smart Contract Architecture

Gas-Optimized On-Chain Operations

Business Outcomes for Your Product

Accelerated KYC/AML Compliance

Zero-Knowledge Proof Integration

Reduced Identity Fraud & Sybil Attacks

New Monetization Channels

Enterprise-Grade Security & Audit

Scalable Gas-Optimized Architecture

Structured Development Tiers

Our Development & Integration Process

Architecture & Design Sprint

Secure Contract Development

Rigorous Security Audits

Testnet Deployment & Simulation

Mainnet Launch & Monitoring

Ongoing Support & Upgrades

Smart Contract Development

Frequently Asked Questions

Get In Touch today.

Get In Touch
today.