We deliver production-ready Solidity/Rust smart contracts with built-in security and gas optimization. Our process includes formal verification and third-party audits before any mainnet deployment.
LABS
Services
Subscription Model Smart Contract Development
We design and audit secure, automated smart contracts for managing recurring Bitcoin subscription payments. Get prorated billing, grace periods, and easy cancellation built for your business model.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, audited smart contracts built for production from day one.
Reduce your time-to-market from months to weeks with our battle-tested development framework.
- Custom Tokenomics & DeFi Logic:
ERC-20,ERC-721, staking, bonding curves, and automated market makers. - Security-First Development: Adherence to
OpenZeppelinstandards and comprehensive unit/integration testing. - Full Audit Support: Preparation for and remediation of findings from leading firms like CertiK and Quantstamp.
key-features-cards
ENTERPRISE-GRADE ARCHITECTURE
Core Features of Our Subscription Contracts
We build secure, scalable, and fully-customizable subscription smart contracts that automate recurring revenue, reduce operational overhead, and unlock new business models for your Web3 product.
01
Flexible Billing Models
Implement any billing logic: fixed-rate, usage-based, tiered, or hybrid. Support for multiple tokens, free trials, and prorated charges. Adapts to your business, not the other way around.
ERC-20, 1155
Token Standards
Custom Logic
Billing Types
02
Automated Revenue & Compliance
Smart contracts autonomously collect payments, manage renewals, and handle cancellations. Built-in features for tax calculations, revenue splitting, and regulatory compliance reduce manual work and risk.
100%
Automated
On-Chain
Audit Trail
03
Gas-Optimized & Scalable
Contracts are engineered for minimal gas consumption per transaction, keeping costs low for you and your users. Architecture supports scaling to millions of subscribers without performance degradation.
< 100k
Avg. Gas
Millions
Subscriber Scale
04
Secure by Design
Built with OpenZeppelin libraries and security best practices. Every contract undergoes rigorous internal review and is prepared for third-party audits (e.g., CertiK, Trail of Bits) to ensure fund safety.
OpenZeppelin
Standards
Audit-Ready
Security
05
Seamless Integration
Ready-to-use APIs and SDKs for easy integration with your frontend, backend, and payment systems. Includes webhook triggers for subscription events and comprehensive admin dashboards.
REST & GraphQL
APIs
Full SDK
Developer Tools
06
Custom Lifecycle Management
Full control over the subscriber journey: upgrade/downgrade paths, grace periods for failed payments, dunning management, and customizable cancellation flows to reduce churn.
Zero-Downtime
Plan Changes
Configurable
Grace Periods
benefits
EXPERTISE BUILT ON PRODUCTION SYSTEMS
Why Choose Chainscore for Your Subscription System
We deliver subscription smart contracts that scale, secure revenue, and automate compliance—backed by battle-tested infrastructure and deep protocol expertise.
01
Production-Ready Architecture
Deploy with confidence using our modular, audited smart contract framework. Built on Solidity 0.8+ with OpenZeppelin standards, designed for gas efficiency and seamless upgrades via proxy patterns.
>50
Deployed Contracts
< 2 weeks
Avg. Time to Launch
02
Enterprise-Grade Security
Every contract undergoes rigorous testing and formal verification. Our multi-layered audit process includes static analysis, manual review, and testnet simulations to eliminate vulnerabilities before mainnet deployment.
0
Critical Bugs in Production
99.9%
Uptime SLA
03
Flexible Billing & Compliance Engine
Support complex subscription models—flat-rate, usage-based, tiered pricing—with automated tax calculation (VAT/GST), multi-currency stablecoin payments, and real-time revenue reporting for financial compliance.
10+
Payment Tokens Supported
< 1 sec
Billing Cycle Execution
04
Scalable On-Chain Infrastructure
Leverage our optimized node infrastructure for reliable event listening, transaction broadcasting, and data indexing. Ensure high availability and sub-second finality for your subscription lifecycle events.
99.9%
Data Delivery SLA
5+
Supported EVM Chains
Choose Your Path to Production
Structured Development Packages
Compare our tiered packages for subscription smart contract development, designed to match your project's stage and requirements.
| Feature | Starter | Professional | Enterprise |
|---|---|---|---|
Smart Contract Architecture Review | |||
Solidity/ERC-4626 Implementation | Basic | Advanced | Custom |
Security Audit & Formal Verification | Automated Scan | Manual + Automated | Comprehensive (3rd-party) |
Multi-Chain Deployment Support | Ethereum Mainnet | EVM L2s (Polygon, Arbitrum) | All EVM + Custom |
Integration Testing Suite | Unit Tests | Unit + Integration | Full E2E with CI/CD |
Gas Optimization Report | |||
Post-Deployment Monitoring & Alerts | 30 Days | 6 Months | 12 Months + SLA |
Priority Support & Response Time | Email (72h) | Slack (24h) | Dedicated (4h) |
Recurring Billing Module | Fixed-rate | Dynamic + Fixed-rate | Fully Custom Logic |
Typical Delivery Timeline | 3-4 Weeks | 6-8 Weeks | Custom |
Starting Price | $15,000 | $45,000 | Custom Quote |
how-we-deliver
END-TO-END DELIVERY
Our Development & Audit Process
A structured, security-first approach to deliver production-ready subscription smart contracts. We combine rigorous engineering with formal verification to ensure your recurring revenue logic is both robust and scalable.
01
Requirement & Architecture Design
We translate your business model into a secure, gas-efficient smart contract architecture. We define token standards (ERC-20, ERC-721), payment flows, and upgrade paths using established patterns like OpenZeppelin.
1-2 days
Design Sprint
OpenZeppelin
Base Contracts
02
Implementation & Gas Optimization
Development in Solidity 0.8+ with a focus on minimizing transaction costs for users. We implement features like prorated billing, free trials, and multi-chain payment options using Layer 2 solutions where applicable.
2-3 weeks
Avg. Dev Time
>30%
Avg. Gas Savings
03
Comprehensive Security Audit
Every contract undergoes a multi-stage audit: automated analysis with Slither/Solhint, manual code review by our senior engineers, and formal verification for critical state transitions to prevent reentrancy and logic flaws.
100%
Coverage Mandate
CertiK
Audit Partners
04
Testnet Deployment & Simulation
We deploy to a testnet (Sepolia, Mumbai) and execute exhaustive test suites simulating edge cases, high load, and failure modes. We provide a full test report and a deployment playbook for your team.
>95%
Branch Coverage
Full Report
Deliverable
05
Mainnet Launch & Verification
We manage the secure mainnet deployment, contract verification on Etherscan/Polygonscan, and initial configuration. We ensure proper ownership transfer and provide you with all administrative keys and documentation.
1 day
Go-Live Support
Etherscan
Verified Source
06
Ongoing Monitoring & Support
Post-launch, we offer monitoring dashboards for subscription lifecycle events and provide retainer-based support for upgrades, new feature integration, and security patch implementation.
24/7
Alerting
SLA Options
Available
Subscription Smart Contracts
Frequently Asked Questions
Common questions about our end-to-end subscription model development service for Web3 businesses.
Standard subscription models with features like tiered access, automated billing, and basic token gating are typically delivered in 2-4 weeks. Complex implementations with multi-chain support, dynamic pricing, or custom revenue-sharing logic can extend to 6-8 weeks. We provide a detailed project plan with milestones during the initial scoping call.
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