We architect and deploy production-grade Solidity/Rust smart contracts with a focus on security-first development. Every contract undergoes a multi-stage review process, including unit testing, integration testing, and formal verification, before deployment to mainnet.
LABS
Services
Legacy Payment System Migration Service
Specialized service to migrate your existing traditional or centralized card payment systems to a decentralized blockchain-based infrastructure with minimal business disruption.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, gas-optimized smart contracts built by Web3-native engineers.
- Custom Logic: Build bespoke DeFi primitives, NFT collections, DAO governance, or cross-chain bridges.
- Gas Optimization: Achieve up to 40% lower transaction costs through expert bytecode-level optimization.
- Security Audits: All code follows
OpenZeppelinstandards and is prepared for third-party audits from firms like CertiK or Quantstamp. - Full Lifecycle Support: From ideation and development to deployment, verification, and ongoing maintenance.
Deliver a secure, auditable, and performant smart contract foundation in as little as 2-4 weeks.
key-features-cards
PROVEN FRAMEWORK
Our Migration Methodology
Our structured, four-phase approach minimizes risk and ensures a seamless transition from legacy rails to modern blockchain infrastructure, delivering operational clarity and measurable outcomes.
01
Phase 1: Discovery & Architecture
We conduct a comprehensive audit of your existing payment flows, APIs, and compliance requirements. This phase delivers a detailed migration blueprint, including smart contract architecture, fee structure, and integration points.
2-3 weeks
Average Duration
100%
API Coverage Audit
02
Phase 2: Smart Contract Development
Our team builds and rigorously tests the core settlement logic using Solidity 0.8+ and OpenZeppelin libraries. Every contract undergoes automated testing and formal verification to ensure security and accuracy.
100%
Test Coverage
OpenZeppelin
Security Standard
03
Phase 3: Staged Deployment
We execute a phased rollout, starting with a sandbox environment for internal testing, followed by a canary release to a subset of users. This minimizes live-system risk and allows for real-world validation.
Zero-Downtime
Deployment Goal
< 1 hour
Rollback Capability
04
Phase 4: Monitoring & Optimization
Post-launch, we provide 24/7 monitoring of transaction success rates, gas costs, and system health. We deliver optimization reports and implement upgrades to enhance performance and reduce operational costs.
99.9%
Uptime SLA
Real-time
Alerting
benefits
FROM LEGACY TO LEDGER
Business Outcomes of a Decentralized Payment System
Migrating from legacy rails to a decentralized payment system delivers measurable improvements in cost, speed, and control. These are the tangible results our clients achieve.
01
Radical Cost Reduction
Eliminate 2-4% per-transaction fees from traditional processors and reduce cross-border FX costs by up to 80%. Settle directly between parties on-chain.
80%
FX Cost Reduction
< 0.5%
Avg. Transaction Fee
02
Sub-Second Settlement
Move from 2-5 day ACH or wire settlement to near-instant finality. Enable real-time treasury management and unlock capital efficiency.
< 1 sec
Settlement Time
24/7/365
Settlement Window
03
Programmable Treasury & Compliance
Embed compliance (AML/KYC) and business logic (escrow, revenue splits) directly into payment flows via smart contracts, reducing manual overhead.
Automated
Rule Enforcement
Immutable
Audit Trail
04
Global Reach & Interoperability
Accept and send payments in stablecoins or native tokens to any wallet globally, bypassing geographic banking restrictions and correspondent networks.
200+
Countries Supported
Multi-Chain
Protocol Agnostic
05
Enhanced Security & Custody Options
Leverage non-custodial architectures or regulated custodians. Mitigate counterparty risk and eliminate single points of failure inherent in legacy systems.
MPC/AA
Wallet Security
SOC 2 Type II
Infrastructure
06
Developer-First Integration
Integrate with familiar REST APIs and Web3 libraries. Our battle-tested smart contract templates and SDKs reduce development time from months to weeks.
< 4 weeks
Avg. Integration
99.9%
API Uptime SLA
Why Modernize Your Payment Stack
Legacy vs. Decentralized: A Clear Comparison
A direct comparison of traditional payment infrastructure against a modern, decentralized approach built with Chainscore. This highlights the operational and financial impact of migration.
| Key Factor | Legacy Payment System | Chainscore Decentralized Solution |
|---|---|---|
Time to Add New Payment Rail | 3-6 months | 2-4 weeks |
Settlement Finality | 2-5 business days | < 2 seconds |
Cross-Border Transaction Cost | 3-5% + FX fees | < 0.5% (on-chain gas) |
Operational Overhead | High (bank relationships, compliance) | Low (programmatic, automated) |
Uptime & Reliability | Subject to banking hours/downtime | 99.9% SLA, 24/7/365 |
Fraud & Chargeback Risk | High (reversible transactions) | Near-zero (immutable settlement) |
Developer Experience | Complex bank APIs, slow sandboxes | Unified Web3 SDKs, testnet deployment |
Total Cost of Ownership (Year 1) | $200K - $1M+ | $50K - $150K |
Capital Efficiency | Funds locked in nostro accounts | Real-time liquidity, programmable treasury |
how-we-deliver
MINIMIZE RISK, MAXIMIZE UPTIME
Our Phased Migration Process
We execute legacy payment system migrations with zero downtime and full transaction integrity. Our proven 4-phase methodology ensures your business continues operating while we modernize your infrastructure.
01
Phase 1: Discovery & Architecture
We conduct a comprehensive audit of your existing payment rails, APIs, and data models. We deliver a detailed migration blueprint with rollback procedures and a phased cutover plan.
100%
Transaction Audit
< 72 hrs
Blueprint Delivery
02
Phase 2: Parallel Environment Build
We deploy the new blockchain-based payment system (e.g., EVM-compatible L2, Solana) in a sandboxed environment. All legacy transactions are mirrored for real-time validation and load testing.
0
Production Impact
1:1
Transaction Mirroring
03
Phase 3: Gradual Cutover & Validation
We migrate payment flows incrementally—starting with low-risk transactions—using dual-write patterns. Each step is validated for correctness, speed, and cost before proceeding.
99.99%
Settlement Accuracy
> 90%
Cost Reduction
04
Phase 4: Decommission & Optimization
After full validation, we sunset the legacy system and finalize the cutover. We then implement monitoring, alerting, and provide documentation for your team.
24/7
Post-Migration Support
Full
System Ownership
security-compliance
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built by Web3-native engineers.
We architect and deploy custom Solidity/Rust smart contracts that are secure by design. Our code undergoes rigorous internal audits and follows OpenZeppelin standards, ensuring your protocol's logic is robust and resilient against exploits.
- From 0 to 1: Go from concept to a fully audited mainnet deployment in 4-6 weeks.
- Full Lifecycle: We handle development, testing (
Hardhat/Foundry), deployment, and post-launch monitoring. - Protocol Expertise:
ERC-20,ERC-721,ERC-1155, custom DeFi primitives, and cross-chain bridges.
Technical & Commercial Questions
Legacy Payment Migration FAQs
Get specific answers on timelines, costs, security, and process for migrating your legacy payment system to blockchain rails.
Our standard migration from legacy systems (like ACH, SWIFT) to blockchain rails takes 4-8 weeks from kickoff to production deployment. This includes 1-2 weeks for architecture design, 2-4 weeks for core development and integration, and 1-2 weeks for security audits and go-live. For complex enterprise systems with multiple payment corridors, timelines scale accordingly, which we define in a fixed-scope project plan.
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