We architect and deploy custom blockchains, sidechains, and L2 solutions tailored to your specific throughput, privacy, and consensus needs. Our full-cycle development delivers a turnkey, production-ready network with all supporting infrastructure.
LABS
Services
Legacy System to Blockchain Billing Migration
Full-service migration of existing SaaS or enterprise billing systems to on-chain smart contracts. We handle data schema transformation, API bridging, and a phased rollout strategy.
Chainscore © 2026
overview
FULL-STACK ENGINEERING
Custom Blockchain Development
Build production-ready, scalable blockchain networks and applications from the ground up.
- Consensus & Protocol Design: Build with
Tendermint,Polkadot Substrate, or customEVM-compatible chains. - Node Infrastructure: Automated deployment, monitoring, and governance for validator sets.
- Core Smart Contracts: Develop and audit the foundational logic for your chain's economy and operations.
- Explorers & Wallets: Custom block explorers and integration-ready wallet SDKs for user onboarding.
Go from concept to a live, maintainable network in 8-12 weeks, complete with documentation and devops automation.
key-features-cards
PROVEN METHODOLOGY
Our End-to-End Migration Framework
A structured, phased approach to de-risk your transition from legacy billing systems to a transparent, automated blockchain ledger. We handle the technical complexity so you can focus on business growth.
01
Discovery & Architecture Design
We conduct a deep-dive audit of your existing billing logic, data models, and compliance requirements to design a future-proof blockchain architecture (e.g., EVM, L2) with clear migration pathways.
2-4 weeks
Planning Phase
100%
Logic Mapping
02
Smart Contract Development
Build of core billing logic as immutable, audited smart contracts. Includes subscription models, proration, invoicing, and payment routing with enterprise-grade security patterns from OpenZeppelin.
Certified
OpenZeppelin
Gas-Optimized
Solidity 0.8+
03
Data Migration & Bridge
Secure, verifiable migration of historical customer and transaction data onto the chain. We build robust off-chain indexers and real-time sync bridges to maintain system integrity during cutover.
Zero-Downtime
Cutover
100%
Data Integrity
04
Integration & API Layer
Deployment of a modern GraphQL/REST API layer that abstracts blockchain complexity, allowing your existing frontends and internal tools to interact seamlessly with the new billing system.
< 100ms
API Latency
Backwards Compatible
Design
05
Security & Compliance Audit
Comprehensive smart contract audit by third-party security firms, plus architecture review for financial compliance (SOC 2, GDPR). We provide a verifiable trust report for your stakeholders.
Third-Party
Security Audit
SOC 2 Ready
Framework
06
Go-Live & Ongoing Support
Managed deployment, monitoring dashboard setup, and team training. We provide 24/7 incident response and performance optimization to ensure 99.9% platform uptime post-launch.
99.9%
Uptime SLA
24/7
DevOps Support
benefits
MEASURABLE RESULTS
Business Outcomes of On-Chain Billing
Migrating your billing logic to the blockchain delivers concrete, auditable improvements to your financial operations and customer experience. These are the tangible outcomes our clients achieve.
01
Real-Time Revenue Reconciliation
Eliminate month-end reconciliation delays with a single source of truth. Every transaction, subscription, and payment is immutably recorded on-chain, providing instant, auditable financial visibility.
100%
Audit Trail
Real-Time
Settlement
02
Automated & Trustless Payouts
Replace manual wire transfers and escrow services with smart contract-enforced disbursements. Define payout rules once, and funds are distributed automatically, securely, and without intermediary risk.
>90%
Cost Reduction
Zero
Manual Errors
03
Programmable Revenue Models
Deploy complex, dynamic pricing (usage-based, tiered, pro-rata) directly into your contracts. Update business logic without redeploying core infrastructure, enabling rapid experimentation and market adaptation.
< 1 day
Model Updates
ERC-20/ERC-721
Native Support
04
Enhanced Developer Experience
Provide your engineering team with a unified, composable billing API. Integrate payment events directly into your application logic, reducing development time for new features and financial products.
2-4 weeks
Faster Integration
Single API
For All Logic
05
Unbreakable Compliance & Audit
Every financial event is a permanent, verifiable on-chain record. Simplify regulatory reporting and financial audits with a complete, tamper-proof history accessible via standard blockchain explorers.
Immutable
Ledger
Automated
Reporting
06
Future-Proof Infrastructure
Build on open standards (ERC-20, ERC-721) instead of proprietary APIs. Your billing system becomes a composable primitive, ready to integrate with the next generation of DeFi, DAOs, and cross-chain applications.
Open Standards
ERC-20/721
Chain-Agnostic
Design
A Structured, Low-Risk Transition
Phased Migration Timeline & Deliverables
Our proven 4-phase methodology for migrating legacy billing systems to blockchain, detailing key deliverables, timelines, and team involvement at each stage.
| Phase & Timeline | Key Deliverables | Your Team's Role | Chainscore's Role | Exit Criteria |
|---|---|---|---|---|
Phase 1: Discovery & Audit (1-2 Weeks) | Legacy System Analysis Report Smart Contract Architecture Blueprint Risk & Compliance Assessment | Provide API/Schema Access Define Core Business Logic Identify Key Stakeholders | Conduct Technical Deep Dive Design On-Chain Data Model Map Regulatory Requirements | Architecture Sign-off Clear Scope of Work Defined |
Phase 2: Core Development (3-5 Weeks) | Production-Ready Smart Contracts Integration Adapter SDK Initial Security Audit Report | Review Weekly Builds Provide Test Data Validate Business Logic | Develop & Unit Test Contracts Build Legacy System Connectors Perform Internal Security Review | All Contracts Pass Internal QA Adapter SDK Functional First Audit Complete |
Phase 3: Staging & Integration (2-3 Weeks) | Fully Integrated Staging Environment End-to-End Test Suite User Acceptance Test (UAT) Plan | Execute UAT with Real Data Train Operations Team Define Go-Live Metrics | Deploy to Private Testnet Support UAT & Bug Fixing Prepare Deployment Runbook | UAT Sign-off from Your Team Zero Critical Bugs Performance Benchmarks Met |
Phase 4: Production Launch & Support (1 Week + Ongoing) | Mainnet Deployment Live Monitoring Dashboard Post-Launch Support Plan | Approve Production Cutover Monitor Initial Transactions Provide Business Feedback | Execute Production Deployment 24/7 Launch Support for 7 Days Handover Documentation | System Live & Processing Transactions Your Team Confident on Operations Support Transitioned to SLA |
how-we-deliver
PROVEN FRAMEWORK
Our Migration Methodology
A structured, risk-averse process for migrating legacy billing systems to blockchain, minimizing disruption and ensuring data integrity.
01
Discovery & Architecture Review
We conduct a comprehensive audit of your existing billing logic, data models, and integration points to design a future-proof blockchain architecture.
2-3 Days
Initial Assessment
100%
Logic Mapping
02
Smart Contract Development
Build secure, gas-optimized smart contracts for core billing functions: invoicing, payment routing, subscription management, and revenue recognition.
OpenZeppelin
Security Base
Solidity 0.8+
Language
03
Data Migration & Validation
Execute a phased migration of historical billing data with cryptographic proof of integrity. We validate all records on-chain before cutover.
Zero-Loss
Data Guarantee
Parallel Sync
Migration Mode
04
API & Integration Layer
Deploy a robust middleware layer (REST/GraphQL APIs) that connects your new blockchain core to existing frontends, ERPs, and payment gateways.
< 100ms
API Latency
Backward Compatible
Design
05
Staged Deployment & Testing
We deploy in isolated staging environments, followed by a canary release to a subset of users, ensuring zero downtime for your live operations.
99.9% SLA
Uptime
Phased Rollout
Strategy
06
Post-Migration Support & Analytics
Receive 24/7 monitoring, on-chain analytics dashboards for transaction visibility, and optimization guidance for 90 days post-launch.
90 Days
Included Support
Real-Time
Analytics
Technical & Commercial Questions
Legacy Billing Migration FAQs
Common questions from CTOs and product leaders about migrating legacy billing systems to blockchain infrastructure.
Our standard migration timeline is 4-8 weeks, broken into distinct phases: 1-2 weeks for system assessment and architecture design, 2-4 weeks for core development and smart contract auditing, and 1-2 weeks for integration, testing, and go-live. For complex systems with high transaction volume (>1M/month), we allocate additional time for load testing and optimization.
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