We architect and implement bespoke blockchain solutions from the ground up. Our team delivers complete node infrastructure, custom consensus mechanisms, and secure smart contract frameworks tailored to your specific use case—whether it's a private consortium chain, a high-throughput L2, or a specialized application chain.
LABS
Services
EVM Smart Contract Subscription Development
Design and deploy secure, gas-optimized subscription logic on Ethereum and EVM-compatible chains, featuring custom billing cycles, proration, and automated renewals.
Chainscore © 2026
overview
FULL-STACK INFRASTRUCTURE
Custom Blockchain Development
Build, deploy, and scale custom blockchain networks and applications with production-ready infrastructure.
Go from concept to mainnet in 8-12 weeks with our proven development lifecycle, backed by 99.9% uptime SLAs for production deployments.
- Core Protocol Development: Custom
EVM-compatible chains,Substrate-based parachains, andCosmos SDKapp chains. - Node & Validator Infrastructure: Automated deployment, monitoring, and governance for validator sets.
- Cross-Chain Integration: Secure bridges and messaging layers (
Wormhole,LayerZero,Axelar). - Enterprise Security: Formal verification, penetration testing, and multi-sig governance modules.
key-features-cards
PRODUCTION-READY MODULES
Core Subscription Contract Capabilities
We deliver battle-tested, audited smart contract modules that form the foundation of your recurring revenue model. Each component is designed for security, scalability, and seamless integration.
01
Flexible Billing Engine
Implement subscription logic with configurable billing cycles (daily, weekly, monthly, annual), proration, and trial periods. Supports multiple payment tokens and on-chain/off-chain payment orchestration.
ERC-20/ERC-777
Payment Standards
Any Interval
Billing Cycle
02
Secure Access Control
Role-based permission system for managing subscribers, admins, and treasury roles. Integrates with OpenZeppelin's AccessControl for proven security patterns and multi-sig compatibility.
OpenZeppelin
Security Base
Multi-Sig
Admin Support
03
Automated Lifecycle Management
Handle the complete subscription lifecycle: sign-up, renewal, upgrade/downgrade, cancellation, and grace periods. Events emitted for every state change enable real-time off-chain workflows.
Full Event Log
Off-chain Sync
Zero Downtime
Plan Changes
04
Gas-Optimized Upgrades
Deploy with upgradeable proxy patterns (Transparent/UUPS) using our hardened templates. Future-proof your business logic without migrating subscriber state or interrupting service.
UUPS/Transparent
Proxy Pattern
State Preserved
Zero Data Migration
05
Compliance & Accounting Ready
Built-in mechanisms for revenue recognition, tax reporting, and regulatory compliance. Provides immutable audit trails for all financial transactions and subscription modifications.
Immutable Ledger
Audit Trail
Real-time
Revenue Tracking
benefits
ENTERPRISE-GRADE DEVELOPMENT
Why Choose Chainscore for Your Subscription Logic
We build secure, scalable, and fully audited subscription smart contracts that power recurring revenue for leading Web3 applications.
01
Security-First Architecture
Every contract is built with OpenZeppelin libraries, undergoes rigorous internal review, and is prepared for third-party audits from firms like Trail of Bits or Quantstamp. We prioritize secure upgrade patterns and comprehensive testing.
100%
Audit-Ready Code
0
Critical Vulnerabilities
02
Gas-Optimized for Scale
Our subscription logic is engineered for minimal gas consumption per transaction, reducing user friction and operational costs. We implement efficient state management and batch operations.
40-60%
Lower Gas Costs
< 200k
Gas per Renewal
03
Flexible Billing Models
Support for fixed-rate, usage-based, tiered, and freemium subscriptions. Integrate with any ERC-20 token, enable prorated upgrades/downgrades, and manage complex trial periods.
6+
Billing Models
Any ERC-20
Payment Token
04
Production-Proven Reliability
Our subscription patterns are battle-tested, handling millions in recurring revenue with 99.9% uptime. We provide robust off-chain indexers and monitoring for real-time subscription state.
99.9%
Uptime SLA
$10M+
Recurring Revenue Managed
05
Rapid Integration & Deployment
Get from specification to mainnet in 2-3 weeks. We deliver complete packages: smart contracts, frontend SDKs (React/Web3.js), admin dashboards, and comprehensive documentation.
2-3 weeks
To Mainnet
Full SDK
Included
06
Compliance & Upgradeability
Designed for long-term maintenance with transparent proxy patterns (UUPS). We ensure logic is compatible with regulatory considerations for subscription services.
Fully Upgradeable
Proxy Architecture
SOC 2
Development Practices
Choose the right plan for your project stage
Structured Development Tiers
A transparent comparison of our EVM smart contract subscription packages, designed to scale with your needs from MVP to enterprise-grade production.
| Feature / Deliverable | Starter | Professional | Enterprise |
|---|---|---|---|
Initial Smart Contract Audit | |||
Gas Optimization Review | |||
Deployment & Configuration Support | |||
Post-Launch Monitoring & Alerts | |||
Priority Support Response Time | 48 business hours | 12 business hours | 4 hours or less |
Included Development Hours / Month | 10 hours | 40 hours | Custom (160+ hours) |
Proactive Security Updates & Patching | |||
Dedicated Technical Account Manager | |||
Custom SLA & Uptime Guarantee | |||
Monthly Subscription | $2,500 | $8,500 | Custom Quote |
how-we-deliver
PREDICTABLE & TRANSPARENT
Our Development & Delivery Process
A structured, four-phase methodology designed for technical leaders. We deliver production-ready, audited smart contract systems with clear milestones and zero surprises.
01
Phase 1: Discovery & Architecture
We conduct a deep technical deep dive to define your subscription logic, tokenomics, and integration points. Deliverables include a comprehensive technical specification and a detailed project roadmap.
1-2 weeks
Duration
100%
Spec Locked
02
Phase 2: Development & Internal QA
Our senior Solidity engineers build your contracts using OpenZeppelin standards. Every module undergoes rigorous unit and integration testing in our isolated development environment before audit.
>95%
Test Coverage
Sol 0.8.x+
Standards
03
Phase 3: Security Audit & Remediation
Your contracts are reviewed by our in-house security team and a third-party auditor. We provide a detailed vulnerability report and implement all critical fixes before deployment.
2 Audits
Minimum
0 Critical
Post-Audit
04
Phase 4: Deployment & Handover
We manage the mainnet deployment, configure frontend integrations, and provide complete documentation and operational runbooks for your team. Includes 30 days of post-launch support.
< 1 day
Deployment Window
Full Docs
Deliverable
security
STRATEGY & ARCHITECTURE
Blockchain Infrastructure Consulting
Expert guidance to design, build, and scale your Web3 infrastructure from concept to production.
We translate your business objectives into a resilient, cost-effective technical blueprint. Our architects analyze your needs to recommend the optimal stack—from L1/L2 selection (Ethereum, Solana, Arbitrum) to node infrastructure and data indexing strategies—ensuring performance and future-proofing from day one.
- Architecture Design: Full-stack system design for dApps, DeFi protocols, and enterprise solutions.
- Protocol Selection: Objective analysis of consensus mechanisms, scalability solutions, and trade-offs.
- Cost & Risk Assessment: Model gas fees, validator costs, and security risks before you build.
- Roadmap Planning: Phased implementation plan with clear milestones for a 4-8 week MVP.
Move from uncertainty to a clear, actionable build plan. We provide the architectural foundation that scales with your success, eliminating costly re-engineering.
EVM Smart Contract Subscriptions
Frequently Asked Questions
Clear answers to common questions about our development process, security, and support for subscription-based protocols.
A standard subscription protocol with core features (recurring billing, user management, admin dashboard) deploys in 2-4 weeks. Complex systems with multi-chain support, advanced analytics, or custom tokenomics require 6-8 weeks. We provide a detailed project plan with milestones after 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