We architect and deploy custom smart contracts that power your token, DeFi protocol, or NFT platform. Our development lifecycle includes formal verification and comprehensive audits to eliminate vulnerabilities before mainnet deployment.
LABS
Services
Blockchain Migration & Legacy System Integration
Plan and execute secure migrations of business logic and data from legacy systems or public chains to new private, permissioned blockchain architectures, ensuring continuity and data fidelity.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built by Web3-native engineers.
- Token Standards:
ERC-20,ERC-721,ERC-1155, and custom implementations. - DeFi Primitives: Automated Market Makers (AMMs), lending/borrowing pools, staking mechanisms.
- Security First: Built with
Solidity 0.8+,OpenZeppelinlibraries, and rigorous testing frameworks. - Full Ownership: You receive all source code, documentation, and audit reports.
We deliver contracts that are gas-optimized, upgradeable, and ready for scale—reducing your time-to-market from months to as little as 2 weeks for an MVP.
key-features-cards
PROVEN APPROACH
Our Migration & Integration Capabilities
We execute secure, zero-downtime migrations and integrations, ensuring your existing business logic and data integrity are preserved on-chain.
01
Legacy System Integration
Connect traditional databases, payment gateways, and enterprise APIs to smart contracts via secure, audited oracles and middleware. Maintain your existing user experience while unlocking new Web3 functionality.
Zero Downtime
Guarantee
Certik Audited
Oracle Feeds
02
Cross-Chain Asset Migration
Move tokens, NFTs, and liquidity between EVM and non-EVM chains (Ethereum, Solana, Polygon, Arbitrum) using battle-tested bridges and canonical token standards. We handle the complex validation and security layer.
100% Asset Safety
Record
< 24 hours
Typical Migration
03
Smart Contract Upgrade & Refactor
Safely migrate from outdated Solidity versions (e.g., 0.4.x) to 0.8.x+, implement upgradeable proxy patterns (Transparent/UUPS), and refactor for gas efficiency and enhanced security without disrupting users.
OpenZeppelin
Standards
70% Avg. Gas Save
After Refactor
04
Consensus & Protocol Migration
Transition application layers between consensus mechanisms (e.g., PoW to PoS) or rollup frameworks (Optimistic to ZK). We architect for finality, scalability, and cost predictability.
Sub-Second Finality
Target
Full Testnet Rehearsal
Process
benefits
TANGIBLE ROI
Business Outcomes of a Successful Migration
A strategic migration to modern blockchain infrastructure delivers measurable improvements in performance, cost, and security. Here are the concrete outcomes our clients achieve.
01
Reduced Transaction Costs
Migrate from high-fee, legacy chains to optimized Layer 2 or alternative Layer 1 networks. We deliver gas optimization and architectural patterns that reduce your operational costs by 60-90%.
60-90%
Cost Reduction
< $0.01
Avg. Tx Cost
02
Enhanced System Performance
Achieve sub-second transaction finality and support thousands of TPS. We architect for scalability, eliminating the bottlenecks of legacy systems to improve user experience and enable new product features.
< 1 sec
Finality
10k+
TPS Capacity
03
Strengthened Security Posture
Replace outdated, unaudited code with modern, secure smart contracts. Our migration includes comprehensive audits, formal verification where applicable, and adherence to OpenZeppelin standards.
Zero
Critical Bugs Post-Audit
100%
OZ Standards
04
Future-Proof Architecture
Move to modular, interoperable systems built on EVM or Solana VM. We ensure your new stack supports seamless upgrades, cross-chain functionality, and integration with emerging DeFi primitives.
2 weeks
Avg. New Feature Time
Multi-Chain
Interoperability
05
Operational Reliability & Uptime
Guarantee 99.9%+ system availability with robust node infrastructure, automated failover, and 24/7 monitoring. Eliminate the downtime and instability of self-managed legacy nodes.
99.9%
Uptime SLA
< 5 min
RTO
06
Accelerated Time-to-Market
Leverage our battle-tested migration frameworks and reusable components. We deliver production-ready integrations in weeks, not months, allowing you to capture market opportunities faster.
4-8 weeks
Full Migration
40% Faster
vs. In-House
Strategic Decision Analysis
Build vs. Buy: In-House Migration vs. Partnering with Chainscore
A detailed comparison of the costs, risks, and timelines associated with migrating legacy systems to blockchain in-house versus leveraging Chainscore's specialized migration framework.
| Key Factor | Build In-House | Partner with Chainscore |
|---|---|---|
Time to Production | 6-12+ months | 8-16 weeks |
Initial Development Cost | $250K - $750K+ | $75K - $200K |
Security & Audit Overhead | High (unaudited, custom code) | Low (pre-audited patterns, formal verification) |
Ongoing Maintenance Burden | Full internal team required | Optional SLA with 24/7 monitoring |
Access to Protocol Expertise | Limited (must be hired/built) | Immediate (Ethereum, Polygon, Arbitrum, Base specialists) |
Risk of Vendor Lock-in | None | None (you own all code & keys) |
Typical Total Cost (Year 1) | $400K - $1M+ | $125K - $300K |
Guaranteed Uptime SLA | Self-managed | 99.9% |
how-we-deliver
MINIMIZE RISK, MAXIMIZE UPTIME
Our Phased Migration Methodology
A structured, four-phase approach to migrate your legacy systems to blockchain with zero business disruption. We de-risk the process with parallel testing, incremental rollouts, and comprehensive rollback plans.
01
Phase 1: Discovery & Architecture
We conduct a full audit of your existing systems and data models to design a future-proof blockchain architecture. This includes mapping legacy logic to smart contracts, defining migration boundaries, and establishing success KPIs.
100%
Data Model Audit
< 2 weeks
Blueprint Delivery
02
Phase 2: Parallel Development & Testing
Your new blockchain layer is built and tested in an isolated environment, running in parallel with your legacy system. We implement comprehensive unit, integration, and security tests, including third-party audits for critical contracts.
99.9%
Test Coverage
0 downtime
Legacy Operations
03
Phase 3: Staged Data Migration
We migrate data in controlled, verifiable batches using idempotent ETL pipelines. Each batch is validated on-chain before proceeding, ensuring data integrity and providing a clear audit trail for compliance.
Zero-loss
Data Integrity
Real-time
Validation
04
Phase 4: Gradual Cutover & Optimization
Traffic is incrementally routed to the new system with real-time monitoring and automated rollback triggers. Post-migration, we fine-tune for gas efficiency and performance, delivering a full handover package.
< 5 min
Rollback SLA
24/7
Go-Live Support
security
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built to your exact specifications.
We architect and deploy custom smart contracts for DeFi, NFTs, DAOs, and enterprise applications. Our development process ensures security-first design and gas-optimized execution from day one.
- Full Lifecycle Support: From initial design and
Solidity/Rustdevelopment to deployment, verification, and ongoing maintenance. - Security Audits: Every contract undergoes rigorous internal review and optional integration with leading external auditors like CertiK and OpenZeppelin.
- Protocol Integration: Seamless compatibility with major standards (
ERC-20,ERC-721,ERC-1155) and DeFi primitives (Uniswap V3, Aave).
Deliver a secure, audited, and fully functional smart contract system in as little as 2-4 weeks.
Our engineers specialize in complex logic, including multi-signature wallets, vesting schedules, upgradeable proxy patterns, and cross-chain interoperability using LayerZero or Axelar.
Technical & Process Questions
Blockchain Migration FAQs
Answers to common questions from CTOs and technical leads planning a blockchain migration or legacy system integration.
Our standard migration from a legacy system or older blockchain to a modern L1/L2 takes 4-8 weeks from kickoff to mainnet deployment. This includes 2 weeks for architecture design and smart contract development, 2 weeks for integration and testing, and 1-2 weeks for security audits and final deployment. Complex DeFi protocols with custom logic may extend to 12 weeks. We provide a detailed, phase-gated project plan at the start.
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