We architect and deploy custom smart contracts on EVM and Solana that form the backbone of your application. Our development process ensures security-first design, gas optimization, and comprehensive testing before mainnet deployment.
LABS
Services
ZK-Rollup Cross-Chain Finality Verification
We build secure, on-chain verification systems that allow one blockchain (e.g., Ethereum L1) to trustlessly validate the validity and finality proofs of transactions from a ZK-Rollup on another chain, enabling atomic cross-chain composability.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built to your exact specifications.
- Token Standards:
ERC-20,ERC-721,ERC-1155,SPL, and custom implementations. - Protocol Logic: DEXs, lending/borrowing, staking, governance, and multi-signature wallets.
- Security: Formal verification, third-party audits (OpenZeppelin, CertiK patterns), and automated vulnerability scanning.
- Delivery: Full documentation, deployment scripts, and a 2-week MVP turnaround for standard contracts.
key-features-cards
ZK-ROLLUP CROSS-CHAIN FINALITY
Core Technical Capabilities We Deliver
We architect and deploy secure, high-performance ZK-Rollup finality verification systems, enabling your cross-chain applications to operate with the speed of an L2 and the security of Ethereum. Our solutions are production-ready, audited, and designed for scale.
benefits
PROVEN RESULTS
Business Outcomes for Your Protocol
Our ZK-Rollup Cross-Chain Finality Verification service delivers measurable improvements to your protocol's security, performance, and user experience. Here’s what you can expect.
01
Unbreakable Cross-Chain Security
We implement zero-knowledge proofs to mathematically verify finality across Ethereum, Arbitrum, and Optimism, eliminating trust assumptions and bridge vulnerabilities. Your users' assets are protected by cryptographic certainty, not multisig committees.
100%
Cryptographic Guarantee
0
Trusted Assumptions
02
Sub-Second Finality Verification
Achieve near-instant confirmation of cross-chain state with our optimized ZK-SNARK circuits. Reduce user wait times from 10+ minutes to under 1 second, enabling seamless DeFi composability and a native multi-chain experience.
< 1 sec
Verification Time
10x
Faster UX
03
Radically Lower Transaction Costs
Batch thousands of cross-chain verifications into a single on-chain proof. Slash your protocol's L1 settlement costs by over 90% compared to traditional optimistic bridge models, making micro-transactions economically viable.
> 90%
Cost Reduction
$0.01
Avg. Verify Cost
04
Future-Proof Architecture
Our modular verification layer is built with Starky and Plonky2, designed for easy integration with new L2s and app-chains. We handle the cryptographic complexity, so you can scale without rebuilding your cross-chain logic.
2 weeks
New Chain Integration
Modular
Design
05
Enterprise-Grade Reliability
Deploy with confidence. Our system is built on a distributed prover network with 99.9% uptime SLA, monitored 24/7. Includes automatic failover, circuit versioning, and regular security audits by leading firms.
99.9%
Uptime SLA
24/7
Monitoring
06
Accelerated Time-to-Market
Go from concept to production in weeks, not months. We provide a complete SDK, integration guides, and dedicated technical support. Focus on your core product while we ensure bulletproof cross-chain finality.
< 4 weeks
Production Ready
Full SDK
Included
Infrastructure Decision Matrix
Build vs. Buy: Custom Verification vs. Generic Bridges
Comparing the total cost of ownership and technical outcomes between developing a custom ZK-Rollup finality verifier in-house, using a generic third-party bridge, or partnering with Chainscore for a custom, optimized solution.
| Critical Factor | Build In-House | Use Generic Bridge | Chainscore Custom Verification |
|---|---|---|---|
Time to Production | 6-12 months | 2-4 weeks | 4-8 weeks |
Upfront Development Cost | $250K - $600K+ | $0 - $50K (integration) | $80K - $200K |
Security Audit Burden | High (Your team manages) | High (You inherit bridge risk) | Low (We provide audited modules) |
Custom Logic & Optimizations | Fully customizable | None (Fixed protocol) | Tailored to your rollup & use case |
Ongoing Maintenance & Upgrades | Full-stack team required | Dependent on vendor roadmap | Optional SLA with 99.9% uptime |
Cross-Chain Finality Speed | Configurable (your design) | 5 min - 12 hours (network-dependent) | < 2 seconds (optimized) |
Total Cost of Ownership (Year 1) | $400K - $1M+ | $50K - $150K + risk premium | $150K - $300K (predictable) |
Protocol & Future-Proofing | Your responsibility | Vendor lock-in risk | We handle L1 upgrades & new standards |
how-we-deliver
PROVEN METHODOLOGY
Our Development & Integration Process
A streamlined, security-first approach to integrate ZK-Rollup finality verification, designed to minimize your time-to-market and technical risk.
01
Architecture & Design Review
We analyze your existing cross-chain architecture and design a custom integration blueprint. This includes selecting the optimal ZK-Rollup framework (zkSync, StarkNet, Polygon zkEVM) and defining the finality verification model.
1-2 weeks
Design Phase
100%
Custom Blueprint
02
Smart Contract Development & Auditing
Our team builds the core verification smart contracts in Solidity 0.8+ using OpenZeppelin libraries. All code undergoes internal review followed by a formal security audit from a partner firm like CertiK or Quantstamp.
Formal Audit
Security Guarantee
OpenZeppelin
Standards Used
03
Prover & Verifier Integration
We implement the off-chain prover logic (in Rust/C++) and integrate it with your sequencer. The on-chain verifier contract is deployed and tested for gas efficiency and finality speed against your target L1 (Ethereum, Arbitrum).
< 5 min
Finality Target
Sub-Second
Proof Generation
04
Staging & Security Testing
The complete system is deployed to a staging environment matching mainnet conditions. We execute comprehensive test suites including edge cases, economic attacks, and load testing under peak transaction volumes.
99.9% SLA
Uptime Validation
1000+ TPS
Load Tested
05
Mainnet Deployment & Monitoring
We manage the phased mainnet deployment with fail-safes. Post-launch, we provide 24/7 monitoring dashboards for proof submission success rates, verifier contract health, and finality latency.
24/7
Monitoring
< 2 hrs
Incident Response
security-approach
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built for scale and compliance.
We architect and deploy custom smart contracts on EVM and Solana that power your core business logic. Our focus is on security-first development, leveraging audited libraries like OpenZeppelin and implementing formal verification for high-value assets.
- End-to-End Development: From concept and
Solidity/Rustcoding to deployment and mainnet launch. - Comprehensive Audits: Internal review + integration with top firms like CertiK and Quantstamp.
- Gas Optimization: Reduce transaction costs by 20-40% through efficient code patterns.
- Upgradeability: Implement secure proxy patterns (
TransparentProxy,UUPS) for future-proof contracts.
We deliver battle-tested contracts that handle real volume, with a 99.9% uptime SLA and incident response protocols.
ZK-Rollup Verification
Frequently Asked Questions
Get clear answers about our ZK-Rollup Cross-Chain Finality Verification service, from technical specifics to engagement details.
ZK-Rollup Cross-Chain Finality Verification is a service that independently and cryptographically verifies the validity and finality of state transitions from a ZK-Rollup (like zkSync, StarkNet, Polygon zkEVM) to its parent chain (like Ethereum). You need it to eliminate trust assumptions in your bridge or interoperability protocol, secure high-value cross-chain transactions, and provide users with cryptographic proof that assets or data on the destination chain are backed by verified, finalized state on the source rollup. This is critical for DeFi protocols, cross-chain bridges, and any application moving significant value between layers.
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