We architect and deploy audit-ready smart contracts that form the backbone of your Web3 application. Our team specializes in Solidity 0.8+ and Vyper, implementing battle-tested patterns from OpenZeppelin to ensure security and gas efficiency from day one.
LABS
Services
Custom zkSNARK Circuit Development for Private Cross-Chain Swaps
We design and implement custom zkSNARK circuits to verify private cross-chain state transitions and asset ownership. Enable efficient, verifiable privacy for swaps without revealing sensitive on-chain data.
Chainscore © 2026
overview
CORE ENGINEERING
Smart Contract Development
Secure, production-ready smart contracts built by expert Solidity engineers.
- Custom Logic: Tailored tokenomics, staking systems, governance modules, and DeFi primitives.
- Security-First: Rigorous internal review process and preparation for third-party audits.
- Gas Optimization: Every contract is optimized for >30% lower transaction costs.
- Full Lifecycle: From specification and development to deployment and post-launch monitoring on
EVMchains.
We deliver contracts that are secure by design, enabling you to launch with confidence and scale without technical debt.
key-features-cards
EXPERTISE
Core Circuit Development Capabilities
We architect and implement zero-knowledge circuits that power secure, scalable cross-chain interoperability. Our development process is built on proven cryptographic primitives and rigorous security practices.
01
Custom zkSNARK Circuit Design
We design and implement custom zkSNARK circuits for your specific cross-chain logic, from asset transfers to complex state verification. Built with Circom and Halo2 for optimal performance and security.
Circom 2.1+
Primary Framework
Halo2
Advanced Circuits
02
Cross-Chain State Proof Generation
Develop circuits that generate succinct proofs for state transitions, balances, and transaction validity across Ethereum, Polygon, Arbitrum, and other EVM chains, enabling trust-minimized bridging.
EVM & Non-EVM
Chain Support
Sub-Second
Proof Gen Target
03
Circuit Optimization & Gas Efficiency
We specialize in circuit optimization to minimize prover time, verification gas costs, and proof size. This directly reduces your end-users' transaction fees and improves scalability.
> 40%
Avg. Gas Reduction
Gnark, Plonky2
Optimization Tools
04
Security Audits & Formal Verification
Every circuit undergoes rigorous review, including manual auditing, automated testing with frameworks like Picus, and symbolic execution to eliminate logical bugs and cryptographic vulnerabilities.
3+ Audits
Per Circuit
Picus, ECne
Verification Tools
05
Recursive Proof & Aggregation Systems
Build scalable systems using recursive proof composition and aggregation (e.g., Proof of Proofs) to batch verifications, enabling high-throughput cross-chain messaging and settlements.
Plonky2
For Recursion
1000x+
Verification Scaling
06
Prover Infrastructure & Integration
We deliver fully integrated prover backends—cloud-optimized or decentralized—with monitoring, key management, and seamless APIs for your application layer to submit and verify proofs.
Rust, Go
Backend Stack
99.5% SLA
Prover Uptime
benefits
TANGIBLE RESULTS
Business Outcomes of Private Cross-Chain Circuits
Our custom zkSNARK circuit development delivers measurable advantages, from accelerated time-to-market to provable security guarantees. These are the concrete outcomes our clients achieve.
01
Accelerated Time-to-Market
Deploy production-ready, audited cross-chain circuits in under 6 weeks. Our modular circuit libraries and battle-tested templates eliminate months of R&D, letting you launch your private interoperability feature first.
< 6 weeks
To Production
80%
Faster Development
02
Provable Security & Compliance
Every circuit undergoes formal verification and security audits against standards like the zkSecurity framework. Achieve regulatory-ready privacy with non-custodial, trust-minimized proofs for financial institutions.
Formal Verification
Standard
Zero Trust Assumptions
Architecture
03
Substantial Cost Reduction
Reduce cross-chain messaging and bridging costs by over 70% by batching transactions into a single proof. Our gas-optimized circuit logic minimizes on-chain verification overhead on destination chains.
> 70%
Cost Savings
Batch Proofs
Core Mechanism
04
Unbreakable Data Privacy
Enable confidential asset transfers and private state sharing between chains. Sensitive transaction details remain encrypted in the proof, visible only to authorized parties, unlocking institutional DeFi use cases.
End-to-End
Encryption
Selective Disclosure
Capability
05
Future-Proof Interoperability
Build on a flexible circuit architecture that abstracts away chain-specific complexities. Seamlessly integrate new L1s and L2s (EVM, non-EVM, Move) without rebuilding your core privacy logic.
Chain-Agnostic
Design
Modular Integration
Framework
06
Enterprise-Grade Reliability
Operate with 99.9% uptime SLAs for proof generation services. Our circuits are designed for high throughput and include failover mechanisms to ensure your cross-chain operations never halt.
99.9%
Uptime SLA
High Throughput
Design Goal
Choose the Right Level of Support
Structured Development Tiers
A clear comparison of our zkSNARK circuit development packages, from foundational proof-of-concept to full-scale enterprise deployment.
| Feature / Deliverable | Proof-of-Concept | Production-Ready | Enterprise Suite |
|---|---|---|---|
Custom zkSNARK Circuit Design | |||
Circuit Optimization & Benchmarking | Basic | Advanced (Gas/Proving Time) | Full (Multi-Platform) |
Solidity Verifier Contract | |||
Zero-Knowledge Proof System | Groth16 | Plonk / Halo2 | Custom (PLONKish, R1CS) |
Third-Party Security Audit | 1 Major Firm | 2+ Firms + Internal Review | |
Multi-Chain Deployment | Single EVM Chain | Up to 3 Chains | Unlimited (EVM, L2s, Non-EVM) |
Integration Support | Documentation Only | 4 Weeks Hands-On | Dedicated Engineer |
Performance SLA | 99.5% Uptime | 99.9% Uptime + 24/7 Monitoring | |
Developer Response Time | Business Hours | < 12 Hours | < 1 Hour (Priority Channel) |
Typical Timeline | 4-6 Weeks | 8-12 Weeks | 12+ Weeks (Custom) |
Starting Investment | $50K - $80K | $150K - $300K | Contact for Quote |
how-we-deliver
PROVEN FRAMEWORK
Our Development Methodology
A systematic, security-first approach to delivering production-ready zkSNARK circuits that operate seamlessly across multiple blockchains.
01
Architecture & Protocol Design
We design your circuit's logic and data model, selecting optimal proving systems (Groth16, Plonk) and target chains (Ethereum, Polygon, Arbitrum) for your specific use case.
2-4 weeks
Design Phase
5+
Protocols Supported
02
Circuit Implementation in Circom
Development of the core zkSNARK circuit using industry-standard frameworks like Circom, with rigorous constraint optimization to minimize proof generation costs and verification gas.
> 40%
Avg. Gas Reduction
Circom 2.x
Framework
03
Multi-Chain Smart Contract Integration
Deployment of verifier contracts and relayers on your target EVM chains (Ethereum L1/L2, Polygon, Base), ensuring seamless proof submission and state synchronization.
< 1 week
Per Chain Deploy
EVM+
Compatibility
04
Security Audit & Formal Verification
Comprehensive review of circuit logic and constraints. We conduct internal audits and partner with leading firms for external verification before mainnet deployment.
3+
Audit Layers
Zero-Critical
Guarantee
05
Performance Optimization & Benchmarking
Systematic profiling of proof generation time, verification gas costs, and relay latency. We deliver optimization reports with concrete benchmarks against project requirements.
Sub-Second
Target Verification
Full Report
Delivered
06
Production Deployment & Monitoring
We manage the mainnet deployment process and provide monitoring dashboards for proof success rates, chain health, and verifier contract performance.
24/7
Alerts
99.9% SLA
Relayer Uptime
security
BUILD
Custom Blockchain Development
End-to-end blockchain development for startups and enterprises, from smart contracts to full-stack dApps.
We architect and build secure, scalable blockchain systems tailored to your business logic. Our full-cycle development delivers production-ready code, not just prototypes.
- Core Smart Contracts: Custom
Solidity/Rustdevelopment withOpenZeppelinstandards and comprehensive security audits. - Full-Stack dApps: Frontend (
React/Next.js) + backend (Node.js/GraphQL) integration with wallets and indexers. - Deployment & DevOps: Mainnet deployment with CI/CD pipelines, monitoring (
Prometheus/Grafana), and 99.9% uptime SLAs. - Protocol Design: Tokenomics, governance models, and incentive mechanisms for
DeFi,GameFi, andNFTprojects.
We deliver a complete, audited MVP in 4-6 weeks, accelerating your time-to-market while ensuring enterprise-grade security and scalability.
zkSNARK Circuit Development
Frequently Asked Questions
Get clear answers on our process, timelines, and security for building custom zero-knowledge circuits for cross-chain interoperability.
We follow a structured 4-phase process: 1. Discovery & Scoping (1 week): We analyze your cross-chain logic and define circuit specifications. 2. Circuit Design & Implementation (2-4 weeks): Our team writes the circuit logic in Circom or Halo2, focusing on constraint optimization. 3. Security & Audit (1-2 weeks): Internal review, formal verification with tools like Picus, and preparation for third-party audit. 4. Integration & Deployment (1 week): We assist with on-chain verifier deployment and provide integration SDKs for your dApp. A dedicated technical lead manages the project end-to-end.
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