Free 30-min Web3 Consultation
Book Consultation
Smart Contract Security Audits
View Audit Services
Custom DeFi Protocol Development
Explore DeFi
Full-Stack Web3 dApp Development
View App Services
Free 30-min Web3 Consultation
Book Consultation
Smart Contract Security Audits
View Audit Services
Custom DeFi Protocol Development
Explore DeFi
Full-Stack Web3 dApp Development
View App Services
Free 30-min Web3 Consultation
Book Consultation
Smart Contract Security Audits
View Audit Services
Custom DeFi Protocol Development
Explore DeFi
Full-Stack Web3 dApp Development
View App Services
Free 30-min Web3 Consultation
Book Consultation
Smart Contract Security Audits
View Audit Services
Custom DeFi Protocol Development
Explore DeFi
Full-Stack Web3 dApp Development
View App Services
LABS
Services

ZK-Rollup Privacy-Preserving KYC

We design and deploy systems where KYC verification occurs off-chain, with a zero-knowledge proof submitted on-chain. Users prove compliance without revealing identity data, enabling regulatory adherence for DeFi protocols on zkSync, StarkNet, and other ZK-Rollups.
Chainscore © 2026
overview
CORE SERVICE

Smart Contract Development

Secure, production-ready smart contracts built for scale and compliance.

We architect and deploy audited, gas-optimized smart contracts on EVM and Solana that power your core business logic. Our development process is built for enterprise-grade security and mainnet readiness.

  • Custom Logic: From ERC-20/721/1155 tokens to complex DeFi primitives and DAO governance.
  • Security-First: Development with OpenZeppelin standards, followed by third-party audits from firms like CertiK or Quantstamp.
  • Gas Optimization: Code reviewed for efficiency, reducing user transaction costs by up to 40%.

We deliver a complete development package: source code, comprehensive documentation, and deployment scripts for testnet and mainnet launch.

Our engineers specialize in Solidity 0.8+, Rust (Solana), and Vyper, ensuring your contracts are future-proof and interoperable. We focus on clear, maintainable code that your team can own and extend.

key-features-cards
ENGINEERED FOR COMPLIANCE & SCALE

Core Technical Capabilities

Our ZK-Rollup KYC infrastructure is built on proven cryptographic primitives and enterprise-grade engineering, delivering privacy, performance, and regulatory certainty.

03

High-Throughput Rollup Architecture

Leverage our custom EVM-compatible ZK-Rollup to batch thousands of KYC attestations into a single proof. Achieve sub-2-second finality and reduce gas costs by 95%+ compared to mainnet verification.

95%+
Gas Cost Reduction
< 2 sec
Attestation Finality
04

Secure Identity Attestation

Integrate with trusted verifiers (e.g., Jumio, Onfido) and issue W3C Verifiable Credentials. Our system creates tamper-proof, revocable ZK proofs of attestation status for seamless user onboarding.

05

Real-Time Monitoring & Auditing

Full audit trail of all KYC verifications and proof generations. Our dashboard provides real-time compliance analytics and generates regulator-ready reports for internal and external audits.

benefits
DELIVERABLES

Business Outcomes for Your Protocol

Our ZK-Rollup Privacy-Preserving KYC service delivers measurable results, from accelerated compliance to enhanced user trust. Here's what you can expect.

01

Regulatory Compliance Without Compromise

Deploy a KYC solution that meets global AML/CFT standards (FATF, MiCA) while keeping user data private. We handle the complex mapping of regulatory logic into verifiable zero-knowledge circuits.

FATF
Compliance Standard
ZK-SNARKs
Privacy Tech
02

Frictionless User Onboarding

Reduce sign-up drop-off by up to 70% with a one-time, portable KYC credential. Users verify once with a trusted provider, then prove compliance across your dApps without revealing personal data.

< 30 sec
Proof Generation
70%
Lower Drop-off
03

Enterprise-Grade Security & Audit

Receive a fully audited system. Our ZK circuits and smart contracts undergo rigorous review by firms like Trail of Bits, with formal verification for critical logic.

Trail of Bits
Audit Partner
Formal Verification
Critical Components
04

Scalable, Cost-Effective Verification

Batch thousands of KYC proofs into a single on-chain transaction. Drastically reduce per-user verification costs and enable high-throughput compliance for mass-market applications.

10,000+
Proofs per Batch
$0.01
Avg. Cost per User
05

Customizable Risk & Jurisdiction Rules

Tailor KYC logic to your specific risk model and target jurisdictions. We implement custom rule sets for different user tiers (e.g., different limits for verified vs. anonymous users).

Multi-Jurisdiction
Rule Sets
Tiered Access
Flexible Models
06

Seamless Integration & Developer Support

Get a production-ready SDK and comprehensive documentation for easy integration into your existing stack. Our team provides dedicated support throughout deployment and scaling.

< 2 weeks
Integration Time
TypeScript SDK
Primary Tooling
ZK-Powered KYC Solutions

Implementation Tiers & Deliverables

Compare our structured implementation packages designed to integrate privacy-preserving KYC into your Web3 application, from proof-of-concept to enterprise-grade deployment.

Feature / DeliverableProof-of-ConceptProduction-ReadyEnterprise Suite

Zero-Knowledge Circuit Development

Basic identity proof

Full KYC/AML compliance logic

Custom multi-jurisdictional rule sets

Smart Contract Suite (Audited)

Core verification contract

Full modular system (Registry, Revocation)

White-label contracts with custom extensions

Frontend SDK & Integration Support

Basic React hooks

Full SDK for Web & Mobile

Dedicated engineering support & training

Identity Provider (IdP) Connectors

1 pre-built connector (e.g., Civic)

3+ major IdP connectors

Custom SSO & legacy system integration

Throughput & Scalability

Up to 100 verifications/hr

10,000+ verifications/hr, L2-optimized

Unlimited, with dedicated prover infrastructure

Compliance Dashboard

Read-only analytics

Full admin dashboard with audit logs

Real-time monitoring, reporting, and alerting

SLA & Support

Community support

99.5% uptime, business-hour support

99.9% uptime, 24/7 dedicated SRE & SLAs

Implementation Timeline

2-4 weeks

6-10 weeks

Custom (typically 12+ weeks)

Pricing

From $25,000

From $75,000

Custom quote (Contact Sales)

how-we-deliver
PROVEN FRAMEWORK

Our Delivery Methodology

A structured, security-first approach to delivering production-ready ZK-Rollup KYC systems that integrate seamlessly and scale with your business.

01

Architecture & Design Sprint

We begin with a collaborative 1-week sprint to define your specific privacy requirements, regulatory scope, and integration points. This ensures the ZK circuit design and smart contract architecture are tailored to your exact use case from day one.

1 week
Design Sprint
100%
Requirements Locked
02

Zero-Knowledge Circuit Development

Our cryptography engineers build and optimize the core ZK-SNARK/STARK circuits for your KYC logic. We implement privacy-preserving proofs for identity verification, credential validation, and compliance checks without exposing user data.

Circom/Halo2
Circuit Frameworks
Gas-Optimized
Proof Generation
03

Smart Contract & Rollup Deployment

We deploy the verifier contracts and the custom rollup sequencer on your chosen L1/L2. This includes the on-chain proof verification system and the off-chain prover service, fully managed for high availability.

< 2 weeks
Deployment Time
EVM-Compatible
Chain Support
04

Security Audit & Penetration Testing

Every component—from ZK circuits to smart contracts—undergoes rigorous internal review followed by an audit from a leading third-party firm like Spearbit or Zellic. We deliver a formal verification report for your compliance team.

Third-Party
Security Audit
Formal Report
Deliverable
05

Integration & SDK Provision

We provide a developer-friendly SDK and comprehensive API documentation for seamless integration into your existing frontend and backend systems. Includes sample code for user onboarding flows and proof submission.

TypeScript/Python
SDK Languages
Full Docs
Included
06

Ongoing Maintenance & Monitoring

We offer SLA-backed monitoring of your rollup's prover network and verifier contracts, with 24/7 incident response. Includes regular updates for cryptographic libraries and compliance rule changes.

99.9%
Uptime SLA
24/7
Support
Technical & Operational Comparison

ZK KYC vs. Traditional Compliance Approaches

A side-by-side analysis of privacy-preserving ZK KYC against conventional methods, highlighting key differences in security, user experience, and operational overhead.

Compliance FactorTraditional KYCZK-Powered KYC

User Data Privacy

On-Chain Compliance Proof

Time to Integrate

8-12 weeks

2-4 weeks

Regulatory Audit Trail

Centralized Database

Immutable, Verifiable Proof

User Onboarding Friction

High (Document Upload)

Low (One-Time Verification)

Cross-Platform Reusability

Ongoing Data Liability

High (You store PII)

None (Zero-Knowledge Proofs)

Infrastructure Cost (Annual)

$50K-$200K+

$15K-$50K

Supported Standards

Manual Checks

ERC-4337, zk-SNARKs, zk-STARKs

ZK-Rollup Privacy-Preserving KYC

Frequently Asked Questions

Get clear answers about our development process, security, and timelines for implementing privacy-first KYC solutions.

Our solution uses zero-knowledge proofs (ZKPs) to verify user credentials without exposing the underlying data. User PII (like passport numbers) is kept off-chain and encrypted. On-chain, we generate and verify a ZK proof that confirms the user is verified by a trusted authority, meeting compliance requirements while preserving anonymity. This architecture ensures data minimization and user sovereignty.

ENQUIRY

Get In Touch
today.

Our experts will offer a free quote and a 30min call to discuss your project.

NDA Protected
24h Response
Directly to Engineering Team
10+
Protocols Shipped
$20M+
TVL Overall
NDA Protected Directly to Engineering Team
ZK-Rollup Privacy-Preserving KYC | Chainscore Labs | ChainScore Guides