We architect and deploy audit-ready smart contracts for DeFi, NFTs, and enterprise applications. Our team delivers gas-optimized, upgradeable, and secure code on EVM and Solana.
LABS
Services
Legacy System to Private Contract Migration
Securely port your sensitive business logic and data from traditional systems (ERP, CRM) to audited, privacy-preserving smart contracts. We ensure data integrity, compliance, and operational efficiency on permissioned or public blockchains.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built by Web3 experts to power your protocol.
- Security-First Development: Built with
OpenZeppelinstandards and formal verification patterns. - Full Lifecycle Support: From architecture and development to deployment and mainnet monitoring.
- Proven Track Record: Contracts securing $50M+ in TVL across client protocols.
Reduce your time-to-market and technical risk with battle-tested smart contract engineering.
key-features-cards
PROVEN METHODOLOGY
Our End-to-End Migration Framework
A structured, risk-mitigated process designed for CTOs to migrate core business logic from legacy databases and APIs to secure, scalable private smart contracts with zero downtime.
01
Discovery & Architecture Audit
We conduct a deep technical analysis of your existing system to map data models, business rules, and API dependencies. This blueprint defines the optimal on-chain architecture and migration scope.
100%
Logic Coverage
< 1 week
Assessment Time
02
Secure Contract Development
Our senior Solidity engineers build your custom private contracts using OpenZeppelin libraries and Foundry for testing. Every contract undergoes formal verification and internal security review.
0.8.23+
Solidity Version
1000+
Test Cases
03
Zero-Downtime Data Migration
We implement idempotent migration scripts and a phased cutover strategy. Your legacy system remains fully operational while new contract state is seeded and validated, ensuring business continuity.
0
Service Disruption
PB+
Data Migrated
04
API Gateway & Integration Layer
We deploy a hardened, low-latency API gateway that translates legacy API calls into contract transactions. This layer handles authentication, rate limiting, and provides a familiar interface for your existing applications.
< 50ms
P99 Latency
REST/gRPC
Protocol Support
05
Production Deployment & Monitoring
We manage the deployment to your chosen EVM L2/L1 (Polygon, Arbitrum, Base) with comprehensive monitoring dashboards for contract health, gas usage, and API performance, backed by 24/7 alerting.
99.9%
Uptime SLA
24/7
Incident Response
06
Post-Migration Support & Optimization
Receive 30 days of dedicated support including performance tuning, gas optimization reports, and developer training for your team to ensure long-term success and ownership of the new system.
30 days
Included Support
40%
Avg. Gas Reduction
benefits
TANGIBLE ROI
Business Outcomes: Beyond the Migration
Migrating legacy logic to a private, secure smart contract is the foundation. The real value is in the measurable business results and operational advantages you gain.
01
Accelerated Time-to-Market
We deliver production-ready private contracts in under 3 weeks, enabling you to launch new financial products or features faster than internal development cycles. Our templated migration patterns and automated testing pipelines eliminate months of R&D.
< 3 weeks
To Production
70%
Faster Launch
02
Eliminated Settlement Risk
Replace multi-day manual reconciliation with atomic, programmatic settlement. Our contracts enforce business logic with cryptographic certainty, removing counterparty risk and operational errors that plague legacy batch processes.
100%
Atomic Execution
0
Manual Errors
03
Substantial Cost Reduction
Drastically lower operational overhead by automating manual processes and reducing reliance on expensive intermediaries. Our gas-optimized contracts and efficient architecture minimize on-chain execution costs for high-frequency business logic.
40-60%
Lower Opex
> 90%
Settlement Cost
05
Future-Proof Architecture
We build with modularity and upgradability using industry standards like OpenZeppelin's Proxy patterns. This allows you to seamlessly integrate new DeFi protocols, oracles, and regulatory requirements without costly re-platforming.
Modular
Design
Proxy-Based
Upgradability
Make the Right Infrastructure Decision
Build vs. Buy: Migrating Legacy Logic
A detailed comparison of the costs, risks, and timelines associated with developing a private contract migration solution in-house versus partnering with Chainscore Labs.
| Factor | Build In-House | Partner with Chainscore |
|---|---|---|
Time to Production | 6-12+ months | 4-8 weeks |
Initial Development Cost | $200K - $500K+ | $50K - $150K |
Security & Audit Risk | High (unaudited, custom code) | Low (pre-audited patterns, formal verification) |
Team Requirements | 3-5 senior blockchain engineers | Your product team + our dedicated engineers |
Ongoing Maintenance | Full-time DevOps & security team | Optional 24/7 monitoring SLA |
Protocol Expertise | Requires deep, ongoing R&D | Built-in for Ethereum, Polygon, Arbitrum, Base |
Guaranteed Uptime SLA | Your responsibility | 99.9% with 4-hour response |
Total Cost of Ownership (Year 1) | $500K - $1M+ | $80K - $200K |
how-we-deliver
PROVEN MIGRATION FRAMEWORK
Our Four-Phase Delivery Methodology
A structured, risk-managed approach to modernizing your legacy infrastructure. We de-risk your migration with clear milestones, automated testing, and transparent reporting at every stage.
01
Phase 1: Discovery & Architecture
We conduct a comprehensive audit of your existing system to map business logic, data flows, and dependencies. This phase delivers a detailed migration blueprint, smart contract architecture, and a phased rollout plan with clear success criteria.
Key Deliverables: Technical Specification Document, Gas & Cost Analysis, Security Threat Model.
100%
Logic Coverage
< 1 week
Blueprint Delivery
02
Phase 2: Development & Unit Testing
Our engineers build your new private smart contracts using Solidity 0.8+ and OpenZeppelin standards. Every function is paired with comprehensive unit tests (Truffle/Hardhat) and gas optimization passes before integration.
Key Deliverables: Production-ready Solidity contracts, Full test suite, Initial gas report.
100%
Test Coverage
OpenZeppelin
Security Base
03
Phase 3: Staging & Integration
We deploy the new contract system to a private testnet that mirrors your production environment. This phase includes end-to-end integration testing, data migration validation, and performance benchmarking against legacy SLAs.
Key Deliverables: Staging Environment, Integration Test Results, Final Performance Benchmarks.
Zero-Downtime
Migration Strategy
99.9%+
Data Integrity
04
Phase 4: Production Deployment & Handoff
Managed cutover to the new private contract system with real-time monitoring and rollback procedures. We provide complete documentation, operational runbooks, and team training to ensure a smooth transition to your internal team.
Key Deliverables: Live Production System, Technical Documentation, Post-Launch Support SLO.
< 4 hours
Planned Cutover
24/7
Launch Support
tech-stack
ENTERPRISE-GRADE MIGRATION
Engineered for Privacy and Scale
Our migration process is built on a foundation of zero-knowledge proofs and modular architecture, designed to meet the stringent security and performance demands of financial institutions.
Technical Due Diligence
Legacy System Migration: Key Questions
Common questions from CTOs and engineering leads planning a migration to a private, on-chain contract system.
We deliver production-ready private contract systems in 4-8 weeks for most projects. The timeline is broken into phases: 1-2 weeks for architecture and design, 2-4 weeks for core development and internal testing, and 1-2 weeks for client UAT and deployment. Complex multi-chain integrations or novel consensus mechanisms can extend this to 12 weeks. We provide a detailed sprint-by-sprint Gantt chart at project kickoff.
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