We architect and deploy custom Solidity/Rust smart contracts that are secure by design. Our development process integrates formal verification, comprehensive unit testing, and third-party audits from firms like CertiK or OpenZeppelin to eliminate vulnerabilities before mainnet deployment.
LABS
Services
AppChain-Specific ZK Circuit Development
Design and implement custom zero-knowledge circuits for your sovereign AppChain. We optimize for your unique consensus, state model, and performance requirements to deliver scalable, private, and verifiable computation.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built by experts for your Web3 application.
From tokenomics to complex DeFi logic, we translate your business requirements into efficient, gas-optimized code.
- End-to-End Development: Token standards (
ERC-20,ERC-721,ERC-1155), DeFi protocols (DEX/AMM, lending/borrowing), and custom governance systems. - Security-First Process: Multi-signature deployment workflows, upgradeable contract patterns using
TransparentProxyorUUPS, and post-deployment monitoring. - Guaranteed Outcomes: Delivery of audit-ready code within agreed sprints, typically a 4-6 week MVP cycle for most projects.
key-features-cards
ZK CIRCUIT DEVELOPMENT
Core Capabilities for Sovereign Chains
We deliver production-ready, application-specific zero-knowledge circuits that provide the cryptographic foundation for your sovereign chain's unique logic and privacy requirements.
01
Custom ZK Circuit Design
We architect and implement custom zero-knowledge circuits tailored to your application's specific state transitions and business logic, enabling private computation and verifiable execution on-chain.
Plonk, Halo2
Proving Systems
Circom, Noir
DSL Expertise
02
Performance & Optimization
Our circuits are engineered for minimal prover time and verification gas costs. We implement advanced techniques like custom gates and lookup tables to ensure your chain remains scalable and cost-effective.
< 5 sec
Target Prover Time
< 200k gas
Verification Cost
03
Security-First Development
Every circuit undergoes rigorous formal verification and audit processes. We follow best practices for constraint system design to eliminate soundness errors and side-channel vulnerabilities.
Formal Verification
Methodology
Zero-Knowledge
Audit Partner
04
Integration & Tooling
We provide full-stack integration support, including prover/verifier smart contracts, client-side proving libraries, and developer tooling to seamlessly embed ZK proofs into your application layer.
Solidity, Rust
Verifier SDKs
WASM Provers
Client Tooling
benefits
DELIVERABLES & GUARANTEES
Business Outcomes for AppChain Teams
We translate complex zero-knowledge cryptography into concrete business advantages. Our development process is designed to deliver measurable results that accelerate your time-to-market and de-risk your technical roadmap.
01
Proven Circuit Architecture
Production-ready ZK circuits tailored for your AppChain's consensus, privacy, or interoperability needs. Built using Circom, Halo2, or Plonky2 with battle-tested patterns.
> 90%
Code Reuse
< 4 weeks
Initial Prototype
02
Gas & Performance Optimization
Circuit designs and proving systems optimized for minimal on-chain verification cost and sub-second proof generation, directly reducing your end-user transaction fees.
60-80%
Gas Reduction
< 500ms
Avg. Proof Gen
03
Security-First Development
Formally verified circuit logic and comprehensive audit readiness. We deliver circuits with detailed documentation and test suites to streamline external security reviews.
100%
Test Coverage
Audit-Ready
Delivery Standard
04
Integration & Developer Experience
Seamless integration packages for your existing stack, including TypeScript/Go SDKs, relayers, and verifier contracts, enabling your team to build on top of the ZK layer immediately.
1-2 weeks
Integration Time
Full SDK
Included
Strategic Infrastructure Decision
Custom ZK Circuits vs. Generic Frameworks
Choosing the right ZK infrastructure is critical for performance, security, and long-term viability. This comparison highlights why custom circuits built for your specific AppChain deliver superior outcomes.
| Key Factor | Generic ZK Framework (e.g., Circom, Halo2) | Chainscore Custom AppChain Circuits |
|---|---|---|
Development Time & Complexity | 6-12 months for integration & optimization | 4-8 weeks to production-ready deployment |
Circuit Performance (Prover Time) | Generic, unoptimized (High latency) | Domain-optimized for your logic (Up to 10x faster) |
Proof Size & On-Chain Cost | Larger, cost-inefficient proofs | Minimized for your specific state transitions |
Security Posture | Your team's responsibility; high audit burden | Built with formal verification; delivered pre-audited |
Recursive Proof Support | Manual, complex implementation | Native architecture for scalable rollups |
Ongoing Maintenance & Upgrades | Requires dedicated in-house ZK team | Managed service with optional SLA |
Total Cost of Ownership (Year 1) | $250K-$600K+ (Team & infra) | $80K-$200K (Predictable service fee) |
Time-to-Market for New Features | Slowed by circuit re-engineering | Agile; circuits evolve with your product roadmap |
how-we-deliver
PROVEN METHODOLOGY
Our AppChain-First Development Process
A systematic, security-first approach to building custom zero-knowledge circuits that are tightly integrated with your application-specific blockchain's architecture and economic model.
01
Architecture & Specification Design
We begin by co-designing the ZK circuit architecture with your AppChain's consensus, data availability, and state transition logic. This ensures the proof system is a native component, not a bolt-on, for optimal performance and security.
2-3 weeks
Avg. Design Phase
100%
Protocol Alignment
02
Circuit Implementation in Circom/Halo2
Our engineers implement the formal spec using industry-standard frameworks like Circom or Halo2. We focus on constraint efficiency, recursive proof composition, and preparing for future verification on your chain's chosen proof system (Groth16, PLONK).
< 1 sec
Target Proof Gen
Gas-Optimized
Verifier Contracts
03
Rigorous Security Audits & Formal Verification
Every circuit undergoes multi-layered review: internal peer review, automated analysis with tools like Picus and VeriSolid, and a final audit by a top-tier third-party firm (e.g., Trail of Bits, Quantstamp) specializing in ZK cryptography.
3+ Audits
Security Layers
Zero-Critical
Guarantee
04
Integration & On-Chain Deployment
We deploy the verified ZK verifier as a native smart contract on your AppChain and build the off-chain prover infrastructure. We provide full SDKs and documentation for your team to generate and submit proofs seamlessly.
2 weeks
Deployment SLA
Full SDK
Included
05
Performance Benchmarking & Optimization
We benchmark proof generation time, verification gas costs, and prover memory usage against your AppChain's requirements. We perform iterative optimizations to meet your specific throughput and cost targets.
90%+
Gas Reduction Target
Benchmarked
vs. Requirements
06
Maintenance & Upgrade Support
We provide ongoing support for circuit logic updates, verifier contract upgrades, and integration with new AppChain features. Our team ensures your ZK infrastructure evolves with your protocol.
24/7
Developer Support
Guaranteed
Upgrade Path
security-rigor
CORE SERVICE
Smart Contract Development
Secure, audited smart contracts built for production from day one.
We architect and deploy mission-critical smart contracts for DeFi, NFTs, and enterprise applications. Our code is built on Solidity 0.8+ with OpenZeppelin standards and undergoes rigorous internal audits before deployment to EVM-compatible chains like Ethereum, Polygon, and Arbitrum.
Deliver a production-ready, secure contract in as little as 2 weeks for standard token or staking logic.
- Full Lifecycle Support: From initial architecture and
Hardhat/Foundrydevelopment to deployment, verification, and monitoring. - Security-First: Every line is reviewed against common vulnerabilities (
reentrancy,overflow) and follows industry best practices. - Gas Optimization: We write efficient code to minimize transaction costs for your users, a critical factor for adoption.
ZK Circuit Development
Frequently Asked Questions
Get clear answers on our process, security, and delivery for your custom AppChain zero-knowledge circuits.
Our process is structured for clarity and efficiency. We begin with a 1-2 week discovery and scoping phase to define requirements and architecture. This is followed by circuit design and implementation, where we build and test the core logic using frameworks like Halo2 or Circom. The final phase includes rigorous security audits and integration support. We provide weekly technical demos and maintain a transparent backlog for client review.
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