We architect and deploy custom smart contracts that form the foundation of your Web3 product. Our development process ensures security-first design, gas optimization, and compliance with key standards like ERC-20, ERC-721, and ERC-1155.
LABS
Services
L2 Contract Upgrade & Version Migration
We manage the complete technical process of upgrading and migrating smart contracts on Layer 2. Our service ensures zero downtime, data integrity, and seamless governance execution for protocols on Arbitrum, Optimism, and Base.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built for scale and compliance.
From tokenization to complex DeFi logic, we deliver contracts that are auditable, upgradeable, and ready for mainnet.
- End-to-End Development: Full lifecycle from specification and
Solidity/Rustcoding to testing and deployment. - Security & Audits: Built with
OpenZeppelinlibraries and prepared for third-party audits from firms like CertiK or Quantstamp. - Measurable Outcomes: Achieve 99.9% uptime SLAs, gas cost reductions up to 40%, and deployment to production in as little as 2-4 weeks.
key-features-cards
ENTERPRISE-GRADE MIGRATION
Our L2 Upgrade & Migration Capabilities
We deliver seamless, secure migrations from L1 to L2 or between L2s, minimizing downtime and eliminating user disruption. Our battle-tested process ensures your protocol's logic and user assets are transferred with 100% integrity.
01
State Migration & Bridge Integration
Secure transfer of protocol state, user balances, and NFT holdings using custom, audited bridge contracts. We ensure data consistency and prevent double-spend or loss of assets during the transition.
Zero Loss
Asset Guarantee
Audited
Bridge Contracts
02
Contract Upgrade Architecture
Design and deploy upgradeable smart contract systems using industry-standard patterns (Transparent/ UUPS Proxies). We implement secure admin controls and migration logic for future iterations.
OpenZeppelin
Standards
Gas-Optimized
Proxy Patterns
03
Cross-Chain Governance & DAO Migration
Coordinate token voting, treasury transfers, and proposal execution across chains. We ensure governance continuity, maintaining voter power and proposal history post-migration.
Continuous
Governance
Snapshot Integration
Voting History
04
Post-Migration Monitoring & Rollback Safeguards
24/7 monitoring of the new L2 deployment with predefined health checks and emergency rollback procedures. We provide a safety net for the first 30 days post-launch.
30-Day
Safety Window
24/7
Incident Response
05
User Communication & Frontend Cutover
We provide a phased rollout strategy, including user notification systems, updated frontend deployments, and RPC endpoint management to ensure a smooth end-user experience.
Phased Rollout
Zero Downtime
< 1 Hour
DNS/ Frontend Cutover
benefits
GUARANTEED RESULTS
Business Outcomes of a Managed Migration
Our L2 contract migration service delivers measurable business value, moving you from legacy infrastructure to scalable, cost-efficient protocols with zero downtime.
01
Zero-Downtime Transition
We execute live contract migrations with state synchronization, ensuring your dApp remains operational for all users throughout the upgrade process.
100%
Uptime Guarantee
0
User Disruption
02
Gas Cost Reduction
Migrate from high-fee L1s to optimized L2s like Arbitrum or Optimism. We guarantee a minimum 90% reduction in transaction costs post-migration.
>90%
Gas Savings
<$0.01
Avg. Tx Cost
03
Accelerated Time-to-Market
Our standardized migration framework and battle-tested tooling cut deployment timelines from months to weeks, getting your upgraded protocol live faster.
< 4 weeks
Full Migration
2 days
Testnet Deployment
06
Comprehensive Post-Migration Support
Receive 30 days of dedicated monitoring, performance optimization, and developer support to ensure a smooth transition for your team and users.
24/7
Monitoring
30 days
Included Support
Make the Strategic Choice for Your Protocol
Managed Service vs. In-House Development
Compare the total cost, risk, and time investment of managing L2 contract upgrades internally versus partnering with Chainscore's dedicated migration team.
| Key Factor | Build & Manage In-House | Chainscore Managed Service |
|---|---|---|
Time to First Upgrade | 8-16 weeks | 2-4 weeks |
Core Engineering Cost | $120K-$300K+ | Included |
Security Audit & Review | External cost: $15K-$50K | Included (CertiK, OpenZeppelin) |
Post-Deployment Monitoring | Your team's responsibility | 24/7 with 99.9% SLA |
Incident Response SLA | Best effort (internal) | Guaranteed < 4 hours |
Expertise in L2 Tooling (Foundry, Hardhat) | Requires ramp-up | Pre-built frameworks & scripts |
Total Year 1 Cost (Est.) | $200K-$500K+ | $75K-$200K |
Risk of Downtime / Bug | High (you bear full risk) | Low (mitigated by our SLAs) |
how-we-deliver
STRUCTURED APPROACH
Our 4-Phase Upgrade Methodology
A proven, risk-mitigated process for migrating your critical L2 smart contracts. We ensure zero downtime, preserved state, and full backward compatibility.
01
Phase 1: Discovery & Audit
We perform a comprehensive audit of your existing contracts, dependencies, and state architecture. This includes security vulnerability assessment and gas usage profiling to establish a baseline.
100%
Code Coverage
48 hrs
Initial Report
02
Phase 2: Architecture & Planning
We design the upgrade path, selecting the optimal pattern (UUPS, Beacon, Diamond) and creating a detailed migration plan. This includes rollback strategies and state migration blueprints.
Zero-Downtime
Guarantee
3 Patterns
Evaluated
03
Phase 3: Development & Testing
Our engineers implement the upgrade contracts using OpenZeppelin libraries. We run exhaustive tests on forked mainnet and testnets, including edge cases and integration scenarios.
> 95%
Gas Efficiency
Full Suite
Integration Tests
04
Phase 4: Deployment & Verification
We execute the upgrade on mainnet with multi-sig governance, followed by post-deployment verification and monitoring. We provide a full audit trail and operational handover.
99.9% SLA
Success Rate
< 2 hrs
Execution Window
security
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built by experts for your Web3 application.
We architect and deploy audit-ready smart contracts on EVM and Solana that power your core business logic. Our development process is built on OpenZeppelin standards and security-first patterns to mitigate risks before the first line of code is written.
Deliver a secure, functional MVP in as little as 2-4 weeks.
Our full-cycle service includes:
- Custom Logic Development: Tailored
SolidityorRustcontracts for DeFi, NFTs, DAOs, and more. - Comprehensive Testing: Unit, integration, and scenario testing with >95% coverage.
- Gas Optimization: Code reviews to minimize transaction costs and maximize user efficiency.
- Deployment & Verification: Full support for mainnet and testnet launches on chains like Ethereum, Arbitrum, Polygon, and Solana.
We partner with leading audit firms for third-party security reviews, providing you with the confidence to launch. Our contracts are built for upgradability and maintenance, ensuring your protocol can evolve.
Technical & Process Questions
L2 Contract Upgrade & Migration FAQs
Common questions from CTOs and engineering leads planning secure, zero-downtime upgrades for their L2 protocols.
Our process follows a structured 4-phase methodology: 1) Discovery & Audit: We analyze your current contracts, dependencies, and upgrade goals. 2) Architecture & Planning: We design the migration path, create a rollback plan, and finalize the technical spec. 3) Development & Testing: Our team builds, rigorously tests in a forked environment, and conducts internal security reviews. 4) Deployment & Verification: We execute the upgrade on mainnet, verify all functionality, and provide post-launch monitoring. This ensures a predictable, transparent, and low-risk migration.
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