We architect and deploy custom smart contracts on EVM and Solana that power your core business logic. Our contracts are built with OpenZeppelin standards, undergo rigorous manual and automated audits, and are designed for gas efficiency and upgradability via proxies.
LABS
Services
Subscription & Recurring Payment Wallets
We build smart contract wallets with native support for automated, programmable recurring payments and subscriptions. Users or payees manage cancel/update functions.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built for scale and compliance.
- Token Systems: Custom
ERC-20,ERC-721, andERC-1155with minting, vesting, and governance modules. - DeFi Protocols: Automated Market Makers (AMMs), lending/borrowing pools, and staking contracts with >99.9% uptime SLAs.
- Enterprise Logic: Multi-signature wallets, access control, and compliance-ready features like allowlists and pausability.
We deliver a fully audited, deployment-ready contract suite in as little as 2 weeks, reducing your technical risk and accelerating your go-to-market.
key-features-cards
ENTERPRISE-GRADE INFRASTRUCTURE
Core Capabilities of Our Subscription Wallets
We build secure, scalable wallet systems that automate recurring revenue for Web3 SaaS, DeFi protocols, and NFT projects. Our solutions are designed for production from day one.
01
Flexible Billing Engine
Implement complex subscription logic with daily, weekly, monthly, or custom billing cycles. Supports fixed-price, usage-based, and tiered pricing models directly on-chain.
ERC-1337
Standard
< 1 sec
Checkout
02
Gasless & Batch Transactions
Enable seamless user onboarding with sponsored meta-transactions. Batch multiple subscription payments into a single transaction to reduce user friction and gas costs by up to 90%.
ERC-2771
Standard
90%
Gas Savings
03
Multi-Chain & Multi-Currency
Deploy subscription logic across Ethereum, Polygon, Arbitrum, and other EVM chains. Accept payments in native tokens, stablecoins (USDC, DAI), or your project's custom ERC-20.
5+
Chains
Any ERC-20
Currency
04
Enterprise Security & Audits
Smart contracts built with OpenZeppelin libraries and undergo rigorous audits by firms like Spearbit. Includes comprehensive access control, pausability, and upgradeability patterns.
OpenZeppelin
Libraries
Spearbit
Audit Partner
05
Real-Time Analytics Dashboard
Monitor MRR, churn, active subscribers, and revenue streams with a dedicated admin dashboard. Webhook integrations for CRM and accounting systems.
Real-Time
MRR Tracking
Webhook API
Integration
06
Compliance & Tax Reporting
Built-in tools for KYC/AML verification flows and generation of transaction reports for tax purposes. Designed to help projects maintain regulatory compliance.
KYC/AML
Flows
Transaction
Ledger
benefits
DELIVERABLES
Business Outcomes for Your Product
We build subscription & recurring payment wallets that directly drive revenue, reduce churn, and accelerate your time-to-market. Here’s what you can expect.
01
Predictable Revenue Streams
Automated, on-chain recurring billing with configurable cycles (monthly, quarterly, annual). Reduce payment friction and secure predictable MRR/ARR from day one.
>95%
On-time Collection
< 1 sec
Payment Execution
02
Zero Failed Payment Churn
Intelligent gas sponsorship and automated retry logic ensure subscription renewals succeed, eliminating a primary cause of involuntary churn in Web3.
99.9%
Renewal Success
0 Gas
For End-User
03
Weeks, Not Months to Launch
Leverage our battle-tested, audited smart contract framework and SDKs. Go from concept to live production in weeks, not months.
2-4 weeks
Deployment
1000+
Pre-Audited Functions
04
Enterprise-Grade Security & Compliance
Every contract is built with OpenZeppelin standards, undergoes rigorous internal review, and is ready for third-party audit by firms like Spearbit or Code4rena.
0 Critical
Audit Findings
SOC 2
Infrastructure
05
Seamless User Onboarding
Fiat-to-crypto ramp integration and abstracted wallet creation lower the barrier to entry, converting more trial users into paying subscribers.
60%
Faster Onboarding
Multi-Chain
Support
06
Real-Time Analytics & Insights
Gain visibility into LTV, churn rate, and revenue metrics with our dashboard. Make data-driven decisions to optimize your pricing and retention strategies.
Real-Time
Data Sync
Custom
Metric Tracking
Choose Your Path to Recurring Revenue
Subscription Wallet Development Tiers
Compare our structured development packages designed to launch your subscription-based dApp with the right balance of features, support, and cost. Each tier includes core smart contract development, integration with payment tokens (ERC-20, USDC, etc.), and a customizable frontend SDK.
| Feature / Support | Starter | Professional | Enterprise |
|---|---|---|---|
Custom Smart Contract Development | |||
Gas-Optimized Architecture | |||
Multi-Chain Deployment (1 chain) | Ethereum | Ethereum + 1 L2 | Ethereum + 3 L2s |
Third-Party Security Audit | Basic Review | Full Audit Report | Full Audit + Bug Bounty Setup |
Frontend Integration SDK | Basic React | React & Vue.js | React, Vue.js, Custom |
Automated Billing & Invoicing Module | |||
Failed Payment Recovery System | |||
Developer Support & Handoff | Documentation Only | 2 Consultation Sessions | Dedicated Technical Lead |
Post-Launch Monitoring SLA | 7 Business Days | 48-Hour Response | 24/7 with 4-Hour Response |
Implementation Timeline | 3-4 Weeks | 5-7 Weeks | 8-12 Weeks |
Starting Price | $25,000 | $75,000 | Custom Quote |
how-we-deliver
PREDICTABLE, SECURE, SCALABLE
Our Development & Delivery Process
A transparent, phased approach to building your subscription wallet, from initial architecture to production deployment and ongoing support.
01
Discovery & Architecture
We conduct a technical deep-dive to define your token standards (ERC-20, ERC-4626), payment models (fixed, usage-based), and gas optimization strategy. Deliverables include a detailed technical specification and architecture diagram.
1-2 weeks
Specification
100%
Requirement Clarity
02
Smart Contract Development
Our engineers build secure, auditable smart contracts using Solidity 0.8+ and OpenZeppelin libraries. We implement core logic for recurring billing, proration, and subscription lifecycle management with comprehensive unit testing.
OpenZeppelin
Security Base
100%
Test Coverage
03
Security Audit & Testing
Every contract undergoes rigorous internal review followed by a formal audit from a third-party security firm. We perform integration testing with frontends and simulate mainnet conditions to ensure reliability.
Third-Party
Security Audit
0 Critical
Vulnerability Target
04
Frontend Integration
We provide SDKs and APIs for seamless integration with your React/Next.js frontend. This includes wallet connection (via Wagmi/viem), subscription management dashboards, and real-time payment status updates.
TypeScript SDK
Developer Experience
< 1 day
Integration Time
05
Deployment & Mainnet Launch
We manage the secure deployment of contracts to your chosen EVM network (Ethereum, Polygon, Arbitrum). Process includes contract verification on Etherscan, initial configuration, and a staged launch plan to mitigate risk.
Multi-Chain
Deployment Ready
99.9%
Launch Success
06
Monitoring & Support
Post-launch, we provide 24/7 monitoring of contract events, transaction success rates, and gas fees. Includes SLA-backed support for upgrades, bug fixes, and feature additions based on user analytics.
24/7
Monitoring
4-hour
Critical Response SLA
security
CORE ENGINEERING
Smart Contract Development
Secure, audited smart contracts built for production on EVM, Solana, and Cosmos.
We architect and deploy custom smart contracts that form the secure backbone of your application. Our development process is built on OpenZeppelin standards and includes formal verification for critical logic.
From tokenomics to complex DeFi logic, we deliver battle-tested code ready for mainnet.
- Multi-chain ready: Deployments on
Ethereum,Polygon,Solana, andCosmos SDKchains. - Security-first: Every contract undergoes manual review and automated analysis with
Slither/MythX. - Gas-optimized: We reduce transaction costs by 15-40% through efficient bytecode and storage patterns.
Our full-cycle service includes upgradability planning using proxies, comprehensive documentation, and integration support for your front-end team.
Subscription & Recurring Payment Wallets
Frequently Asked Questions
Answers to common technical and commercial questions about our enterprise-grade subscription wallet development service.
A standard subscription wallet with core features (ERC-4337 account abstraction, multi-chain support, basic dashboard) deploys in 3-4 weeks. Complex implementations with custom billing logic, advanced analytics, or multi-signature approvals typically take 6-8 weeks. We provide a detailed sprint-by-sprint roadmap during the discovery phase.
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