We architect and deploy custom smart contracts that form the secure, immutable backbone of your application. Our development process ensures gas optimization, comprehensive security audits, and adherence to standards like ERC-20, ERC-721, and ERC-1155.
LABS
Services
Account Abstraction Testnet Implementation
Deploy and integrate a complete ERC-4337 infrastructure on Layer 2 testnets. We configure bundlers, paymasters, and entry points so you can test gas sponsorship, user onboarding, and smart account logic before mainnet launch.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built by Web3 experts for your protocol or dApp.
- End-to-End Development: From initial design and
Solidity 0.8+coding to deployment and verification on mainnet. - Security-First: All contracts undergo internal review and integration with leading audit firms.
- Upgradeable Architecture: Implement
Transparent ProxyorUUPSpatterns for future-proof logic.
Deliver a battle-tested, auditable codebase that reduces risk and accelerates your time-to-market by weeks.
key-features-cards
ACCELERATE DEVELOPMENT
Complete ERC-4337 Testnet Stack
Deploy a production-ready, fully instrumented smart account environment on testnet in under two weeks. Our managed stack eliminates infrastructure complexity so your team can focus on core application logic and user experience.
01
Managed Bundler & Paymaster
We deploy and manage a high-availability bundler (EIP-4337) and gas sponsorship paymaster on Sepolia and Base Sepolia. Includes real-time monitoring, automatic failover, and configurable sponsorship policies.
Client Value: Zero operational overhead for your dev team. Test user-paid and sponsored transactions immediately.
99.9%
Testnet Uptime
< 2 weeks
Deployment Time
02
Custom Smart Account Factory
We build and deploy a dedicated smart account factory contract tailored to your use case (e.g., multi-sig, session keys, social recovery). Built with OpenZeppelin and audited security patterns.
Client Value: Own your deployment and user base. Avoid vendor lock-in with a custom, upgradeable contract you control.
ERC-4337
Compliant
OpenZeppelin
Standards
03
Comprehensive Test Suite
Receive a full suite of integration tests, load tests, and edge-case simulations for your dApp's interaction with the AA stack. Includes scripts for common user operations (batch transactions, gas sponsorship).
Client Value: Slash QA time by 70%. Ship with confidence using pre-validated test scenarios for wallets like Safe, Biconomy, and Particle.
100+
Test Cases
70%
QA Time Saved
04
Real-Time Analytics Dashboard
Gain visibility into testnet performance with a custom Grafana dashboard tracking UserOperation success rates, gas costs, bundler latency, and paymaster utilization.
Client Value: Make data-driven decisions before mainnet launch. Identify bottlenecks in user flows and optimize gas sponsorship models.
Sub-Second
Data Latency
24/7
Monitoring
06
Security & Audit Readiness Package
Our implementation includes a security review of your custom contracts, threat modeling for your AA architecture, and a pre-audit checklist aligned with firms like Spearbit and Code4rena.
Client Value: De-risk your mainnet launch. Pass security audits faster with pre-vetted code and architecture documentation.
Pre-Audit
Checklist
Threat Model
Included
benefits
EXPERT IMPLEMENTATION
Why Test Account Abstraction with Chainscore
Move from concept to a secure, production-ready AA wallet in weeks, not months. Our battle-tested testnet implementation de-risks your launch with proven infrastructure and security patterns.
01
Production-Ready Test Environment
Deploy and test ERC-4337 smart accounts, paymasters, and bundlers on a full-stack, isolated testnet that mirrors mainnet conditions. Validate gas sponsorship, batched transactions, and session keys before launch.
< 2 weeks
to first testnet deploy
100%
ERC-4337 spec compliance
02
Security-First Development
Build on audited smart account templates with OpenZeppelin Defender integration. Our implementation includes systematic testing for reentrancy, signature replay, and paymaster logic vulnerabilities.
3+ audits
per contract suite
0 critical
issues at launch
03
Gas Optimization & Cost Analysis
Receive detailed gas profiling for user operations and paymaster strategies. We benchmark your implementation against industry standards to ensure sustainable sponsorship models and low user fees.
Up to 40%
gas savings
Real-time
cost dashboards
04
Multi-Chain Validation
Test your AA implementation across Ethereum, Polygon, Arbitrum, and Optimism testnets from a single codebase. Ensure consistent user experience and contract interoperability across your target ecosystems.
4+ chains
simultaneous testing
Unified SDK
for all deployments
Choose Your Path to Production
Account Abstraction Testnet Implementation Tiers
A structured comparison of our service packages, detailing the scope, support, and deliverables for launching your AA-powered application on testnet.
| Deliverable / Support | Starter | Professional | Enterprise |
|---|---|---|---|
Smart Contract Audit & Review | |||
ERC-4337 Bundler & Paymaster Setup | Basic (Public) | Custom (Dedicated) | Custom (Dedicated) |
Testnet Deployment Support | Self-serve guide | Hands-on deployment | Full CI/CD pipeline setup |
Wallet Integration (Web & Mobile) | 1 platform | 2 platforms | All platforms (Web, iOS, Android) |
Gas Sponsorship Strategy | Basic model | Custom logic & simulation | Multi-paymaster, multi-chain strategy |
Monitoring & Alerting Dashboard | 7-day access | 30-day access | 90-day access + SLA |
Technical Support Response Time | Best effort | < 24 hours | < 4 hours (24/7) |
Post-Launch Security Review | 1 review | Quarterly reviews | |
Estimated Timeline | 2-3 weeks | 4-6 weeks | 6-8 weeks |
Starting Investment | $15,000 | $45,000 | Custom Quote |
how-we-deliver
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built for scale and compliance.
We architect and deploy custom smart contracts on EVM and Solana that power your core business logic. Our process delivers audit-ready code in 2-4 weeks, with a focus on gas optimization and upgradability patterns.
- Security-First Development: Built with
OpenZeppelinstandards, formal verification, and comprehensive unit/integration testing. - Protocol-Specific Expertise: DeFi (AMMs, lending/borrowing), NFTs (ERC-721A, dynamic metadata), DAOs, and enterprise tokenization.
- Full Lifecycle Support: From architecture and development to deployment, monitoring, and maintenance with 99.9% uptime SLAs.
We don't just write code; we deliver the secure, auditable foundation your financial product requires to launch with confidence.
Implementation & Support
Account Abstraction Testnet FAQs
Get clear answers on timelines, costs, and technical details for deploying and testing your ERC-4337 smart accounts.
A standard ERC-4337 testnet implementation takes 2-4 weeks from kickoff to deployment on your chosen testnets (e.g., Sepolia, Goerli). This includes smart account design, bundler/paymaster integration, and full end-to-end testing. Complex multi-chain or custom signature logic can extend this timeline, which we scope and quote upfront.
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