We architect and deploy audit-ready smart contracts for tokens, DeFi protocols, and NFT ecosystems. Our code follows OpenZeppelin standards and is tested against the latest security threats, ensuring your core logic is robust from day one.
LABS
Services
Gasless & Account Abstraction Subscription Wallets
We build non-custodial wallet systems using ERC-4337 to enable seamless recurring payments. Users subscribe with any token, never hold gas, and you retain full custody. Deploy in 4-6 weeks.
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-1155contracts with minting, vesting, and governance modules. - DeFi & DAOs: Automated market makers (AMMs), staking pools, and multi-signature governance contracts.
- Enterprise Logic: Complex business rules encoded with upgradability patterns and gas optimization.
We deliver a fully documented codebase and test suite within 2-4 weeks, providing a secure foundation you can build on with confidence.
key-features-cards
ARCHITECTURE
Core Technical Capabilities
Our subscription wallet infrastructure is built on battle-tested account abstraction standards, delivering enterprise-grade reliability and seamless user onboarding.
02
Gas Abstraction Engine
Paymaster infrastructure supporting multiple sponsorship models (user-paid, dApp-paid, subscription). Features gas fee estimation, multi-chain relay, and cost optimization algorithms.
< 500ms
Relay Latency
6+ Chains
Native Support
03
Secure Smart Account Factory
Deterministic, non-upgradeable factory contracts for deploying user-owned smart contract wallets. Includes social recovery modules and multi-signature guardrails by default.
0 Vulnerabilities
Audit Results
OpenZeppelin
Security Standard
04
Session Key Management
Granular permission system for defining transaction limits, token allowances, and time-bound sessions. Enables secure "one-click" UX for repeated interactions.
10+ Params
Permission Types
Real-time Revoke
Admin Control
05
Cross-Chain User Operations
Bundler and paymaster services optimized for processing UserOperations across EVM-compatible chains (Ethereum, Polygon, Arbitrum, Base). Ensures consistent UX.
99.9%
Uptime SLA
< 2s
Finality Target
benefits
TANGIBLE RESULTS
Measurable Business Outcomes
Our gasless & account abstraction subscription wallets deliver concrete improvements to your key business metrics. See the data-driven impact on user growth, retention, and operational efficiency.
01
Eliminate Onboarding Friction
Remove the need for users to manage seed phrases or pre-fund wallets. We deliver a one-click, email/social login experience that converts 3-5x more users from sign-up to first transaction.
3-5x
Higher Conversion
< 60 sec
First Transaction
02
Guaranteed Transaction Success
Our managed gas sponsorship and fee abstraction ensure user transactions never fail due to insufficient gas. We provide a 99.9% transaction success SLA, eliminating a primary cause of user drop-off.
99.9%
Success SLA
0
Gas Errors for Users
03
Predictable Operational Costs
Move from variable, unpredictable gas fees to fixed, subscription-based billing. We provide detailed analytics and cost forecasting, reducing your payment infrastructure overhead by up to 40%.
40%
Cost Reduction
Fixed
Monthly Billing
05
Rapid Feature Deployment
Implement batch transactions, subscription payments, and custom sponsorship rules without smart contract redeployment. Our SDK and APIs enable new monetization features in under 2 weeks.
< 2 weeks
New Features
1
Unified SDK
06
Superior User Retention
Increase user lifetime value with seamless cross-session experiences, automated renewals, and sponsor-covered transactions for key actions. Our clients see a 25-50% increase in 30-day user retention.
25-50%
Retention Increase
LTV
Lifetime Value Boost
Gasless & Account Abstraction Subscription Wallets
Structured Development Packages
Compare our tiered service packages for implementing secure, scalable, and user-friendly subscription wallet infrastructure.
| Feature / Specification | Starter | Professional | Enterprise |
|---|---|---|---|
Custom Paymaster Integration | |||
ERC-4337 Bundler Setup & Management | |||
Multi-Chain Deployment (EVM) | 1 Network | Up to 3 Networks | Unlimited |
Smart Contract Audit (External) | Basic Review | Full Audit Report | Full Audit + Continuous Monitoring |
Gas Sponsorship Logic & Dashboard | Basic Rules | Advanced Segmentation | Custom Business Logic |
Implementation Timeline | 4-6 Weeks | 6-8 Weeks | Custom |
Technical Support & SLA | Email (Business Hours) | Priority (24/7) | Dedicated Engineer & 4h Response |
Uptime & Performance SLA | 99.5% | 99.9% | 99.99% |
Recurring Billing Engine Integration | |||
Custom User Onboarding Flows | |||
Compliance & KYC Integration Hooks | |||
Starting Project Cost | $25,000 | $75,000 | Custom Quote |
how-we-deliver
FROM CONCEPT TO PRODUCTION
Our Development Process
A proven, security-first methodology for delivering enterprise-grade gasless and account abstraction wallets that scale. We focus on reducing your time-to-market while ensuring institutional-grade security and reliability.
01
Architecture & Design Review
We analyze your use case and design a modular wallet architecture using ERC-4337 standards, ERC-6900 modules, and the optimal bundler/paymaster infrastructure for your needs.
1-2 weeks
Design Phase
ERC-4337/6900
Standards
02
Smart Contract Development
Our engineers write, test, and optimize secure smart accounts, factory contracts, and validation logic in Solidity 0.8+, leveraging battle-tested libraries like OpenZeppelin and Account Abstraction SDKs.
100%
Coverage Target
OpenZeppelin
Security Base
03
Infrastructure Integration
We deploy and configure the critical backend: bundler nodes (e.g., Stackup, Alchemy), paymaster services for gas sponsorship, and RPC endpoints for multi-chain support.
Multi-chain
Deployment
99.9% SLA
Target Uptime
05
SDK & Frontend Implementation
We deliver a polished developer experience with custom React/TypeScript SDKs, seamless Web3Auth or Privy integration, and frontend components for user onboarding and transaction flows.
React/TS SDK
Delivery
< 1 sec
Tx Response Target
06
Deployment & Ongoing Support
We manage the production deployment, provide comprehensive documentation, and offer ongoing monitoring, maintenance, and upgrade support with clear SLAs.
24/7
Monitoring
SLA Backed
Support
security-compliance
RELIABLE FOUNDATION
Blockchain Infrastructure & Node Management
Enterprise-grade node infrastructure with 99.9% uptime SLA for production applications.
We deploy, monitor, and maintain your dedicated blockchain nodes, eliminating operational overhead. Our fully-managed service includes multi-region redundancy, real-time health monitoring, and instant failover to ensure your dApp never misses a block.
Focus on your product, not your infrastructure. We guarantee the reliability so you can guarantee the user experience.
- Supported Networks: Ethereum, Polygon, Arbitrum, Optimism, Base, Solana, and other EVM/L1 chains.
- Key Metrics: Sub-100ms API latency, 99.9% uptime SLA, 24/7 incident response.
- Security: Dedicated VPCs, DDoS protection, and regular security patching.
- Compliance: Full transaction history logging and audit trails for regulatory readiness.
Gasless & Account Abstraction
Frequently Asked Questions
Get clear answers on how our subscription wallet service works, from implementation to security and support.
A standard implementation for a single EVM chain takes 2-3 weeks from kickoff to production. This includes smart contract deployment, bundler and paymaster integration, frontend SDK setup, and security review. Multi-chain deployments or complex custom features (like social recovery or multi-sig) can extend this to 4-6 weeks. We provide a detailed project plan in the first week.
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