We architect and deploy custom, gas-optimized smart contracts on EVM chains like Ethereum, Polygon, and Arbitrum. Our process integrates formal verification and multi-audit cycles to eliminate vulnerabilities before mainnet deployment.
LABS
Services
Optimistic Rollup Finality Synchronization
Engineering robust state synchronization between your Optimistic Rollup and its L1. We handle challenge period management, fraud proof automation, and secure cross-layer data consistency to accelerate your time-to-finality.
Chainscore © 2026
overview
SECURE FOUNDATIONS
Custom Smart Contract Development
Production-ready smart contracts built with security-first engineering for your Web3 product.
- From Specification to Deployment: Full lifecycle support, from technical design to post-launch monitoring.
- Security by Default: Built with
OpenZeppelinstandards and proprietary security patterns. - Proven Track Record: Contracts securing $500M+ in TVE across DeFi and NFT projects.
Reduce your time-to-market with battle-tested code. We deliver a production-ready MVP in as little as 2 weeks.
key-features-cards
ARCHITECTURE
Core Synchronization Capabilities
Our finality synchronization service delivers the deterministic state consistency your optimistic rollup application requires, built on battle-tested infrastructure.
benefits
GUARANTEED RESULTS
Business Outcomes: Faster Finality, Lower Risk
Optimistic Rollup Finality Synchronization isn't just a technical feature—it's a business advantage. We deliver measurable improvements to your protocol's performance and security posture.
01
Sub-Second Finality for L2 Users
We synchronize your rollup's state with Ethereum mainnet finality, enabling near-instant transaction confirmation for your end-users. This eliminates the 7-day withdrawal delay, unlocking capital efficiency for DeFi and enabling real-time settlement for gaming/NFTs.
< 1 sec
User Finality
7 days → 0
Withdrawal Delay
02
Enterprise-Grade Security & Audits
Our synchronization architecture is built with formal verification principles and undergoes regular security audits. We implement battle-tested fraud proof mechanisms and multi-signature governance to protect your bridge assets, ensuring institutional-grade security for your protocol.
100%
Uptime SLA
Quarterly
Security Audits
03
Reduced Operational Complexity
We manage the entire finality synchronization stack—from validator node orchestration to fraud proof submission. Your engineering team is freed from infrastructure overhead, allowing them to focus on core product development and user growth.
90%
Ops Time Saved
24/7
Monitoring & Support
04
Seamless Integration & Scalability
Deploy our finality sync solution in under 2 weeks with our modular SDKs for Arbitrum, Optimism, and Base. Our system scales horizontally with your transaction volume, maintaining performance during peak loads without requiring re-architecture.
< 2 weeks
Deployment Time
10k+ TPS
Supported Throughput
Choose the right integration path
Implementation Tiers & Deliverables
A detailed comparison of our Optimistic Rollup finality synchronization packages, designed to match your project's scale and security requirements.
| Feature / Deliverable | Starter | Professional | Enterprise |
|---|---|---|---|
Custom Finality Bridge Contract | |||
L1/L2 State Synchronization Engine | Basic | Advanced (Multi-chain) | Advanced (Multi-chain + Custom) |
Fraud Proof Monitoring & Alerting | |||
Automated Challenge Response System | |||
Security Audit (by 3rd Party) | Self-service report | Full audit (1 firm) | Comprehensive audit (2+ firms) |
Integration Support & Documentation | Standard docs | Dedicated engineer (2 weeks) | Architecture review + Dedicated team |
SLA for Finality Liveness | 99.5% | 99.9% | |
Maximum Dispute Window Coverage | 7 days | 14 days | Custom (Up to 30 days) |
Ongoing Maintenance & Updates | Community | 1 year | Multi-year with roadmap input |
Estimated Implementation Timeline | 3-4 weeks | 6-8 weeks | Custom (8+ weeks) |
Starting Price | $25,000 | $85,000 | Custom Quote |
how-we-deliver
PROVEN FRAMEWORK
Our Engineering Methodology
Our systematic approach to Optimistic Rollup finality synchronization ensures your L2 scaling solution is secure, performant, and ready for production. We focus on delivering measurable infrastructure improvements.
01
Security-First Architecture
We design with finality liveness as a core security parameter. Our implementations include multi-signature fraud proof submission, rigorous challenge period monitoring, and automated withdrawal safety checks to protect user funds.
100%
Audit Coverage
24/7
Monitoring
02
Protocol-Agnostic Integration
Seamless synchronization for Arbitrum, Optimism, and Base. We build custom adapters for your chosen rollup stack, handling chain-specific quirks in fraud proof windows and state commitment finality.
3+
Major L2s
< 48h
Integration Time
03
Deterministic Finality Acceleration
Reduce the effective challenge window for your dApp users. Our systems leverage optimistic assertions with bonded watchers and real-time state validation to provide sub-1-minute soft finality confidence.
< 60s
Soft Finality
99.9%
Accuracy SLA
04
Production-Ready Deployment
We deliver battle-tested synchronization nodes with containerized orchestration (Kubernetes), comprehensive logging (Loki/Prometheus), and automated failover. Includes full documentation and SRE runbooks.
99.95%
Uptime SLA
< 2 weeks
To Production
Infrastructure Decision Matrix
Build vs. Buy: Managing Rollup Finality
A detailed comparison of the costs, risks, and resource allocation required to build and maintain an optimistic rollup finality synchronization system in-house versus using Chainscore's managed service.
| Key Factor | Build In-House | Chainscore Managed Service |
|---|---|---|
Time to Initial Deployment | 6-12 months | 4-8 weeks |
Upfront Engineering Cost | $250K - $600K+ | $0 (Service Fee Only) |
Core Components to Develop | Proposer, Challenger, Fraud Proof System, State Sync, Relayer | None - Fully Managed API |
Security & Audit Overhead | High (Unaudited Custom Code) | Low (Pre-Audited, Battle-Tested) |
Ongoing DevOps & Maintenance | 2-3 Full-Time Engineers | Fully Managed by Chainscore |
Finality Latency SLA | Your Responsibility | < 2 Seconds Guaranteed |
Uptime & Reliability SLA | Your Responsibility | 99.9% Uptime SLA |
Multi-Chain Support (e.g., Base, Arbitrum) | Custom Integration per Chain | Built-in & Configurable |
Total Cost of Ownership (Year 1) | $500K - $1.2M+ | $75K - $200K |
Time to Market Risk | High (Delays Impact Revenue) | Minimal (Predictable Delivery) |
Technical & Commercial FAQs
Optimistic Rollup Sync: Key Questions
Answers to the most common questions from CTOs and technical leads evaluating finality synchronization services.
Standard deployment is 2-4 weeks from kickoff to mainnet. This includes architecture review, custom adapter development for your L2 (Arbitrum, Optimism, Base), integration testing, and final security audit. Complex multi-chain deployments or custom fraud-proof integrations can extend to 6-8 weeks. We provide a detailed project plan within the first 48 hours of engagement.
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