We architect and deploy custom smart contracts that form the foundation of your Web3 product. Our development process is built on security-first principles, utilizing OpenZeppelin libraries and comprehensive audit trails to mitigate risk from day one.
LABS
Services
Account Abstraction Wallet Sandbox Implementation
Deploy a controlled testing environment to validate your smart contract wallet's compliance logic, user flows, and transaction policies. Mitigate regulatory risk before launching to mainnet.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built for scale and compliance.
- Full-Stack Development: From
ERC-20tokens to complexDeFiprotocols andNFTmarketplaces. - Security & Audits: Rigorous internal testing, formal verification, and preparation for third-party audits.
- Gas Optimization: Code engineered for efficiency, reducing user transaction costs by up to 40%.
- Maintenance & Upgrades: Proactive monitoring and secure upgrade paths using proxy patterns.
Deliver a market-ready, auditable contract suite in as little as 4 weeks, accelerating your time-to-market while ensuring institutional-grade security.
key-features-cards
IMPLEMENTATION PILLARS
Core Sandbox Capabilities
Our sandbox delivers a production-ready AA wallet environment, accelerating your development cycle from months to weeks with enterprise-grade security and interoperability.
01
Modular Smart Account Implementation
Deploy with pre-audited, upgradeable smart accounts (ERC-4337) supporting multi-sig, social recovery, and session keys. We integrate leading providers like Safe{Core} and Biconomy for immediate production readiness.
< 2 weeks
To Live Prototype
ERC-4337
Standard Compliant
02
Paymaster & Gas Abstraction
Implement sponsor transaction models (ERC-2771) and flexible gas policies. Test fee subsidization, pay-with-ERC20, and batch transactions to eliminate user friction before launch.
Zero-gas
User Onboarding
Multi-chain
Fee Management
03
Bundler Integration & Simulation
Integrate with reliable bundler infrastructure (e.g., Stackup, Alchemy) and a local simulation environment. Validate UserOperations, estimate gas, and debug failed transactions in a controlled setting.
99.9%
Simulation Accuracy
< 1 sec
Op Validation
04
Cross-Chain Wallet Orchestration
Build and test wallet logic that operates seamlessly across EVM chains (Ethereum, Polygon, Arbitrum). Our sandbox includes fork testing for consistent state management and bridging simulations.
5+
EVM Chains Supported
Unified API
State Management
05
Security & Audit-Ready Code
Develop with security-first templates, automated vulnerability scanning, and comprehensive test suites. Deliver code that meets standards for formal verification and third-party audit readiness.
OpenZeppelin
Security Patterns
100%
Line Coverage Goal
06
Real User Analytics & Monitoring
Integrate analytics dashboards to track sandbox usage, simulate user journeys, and monitor key performance indicators (KPIs) like wallet creation time and transaction success rates.
Custom KPIs
Performance Tracking
Real-time
Debug Logs
benefits
THE DEVELOPMENT ADVANTAGE
Why Build with a Dedicated Sandbox?
A purpose-built sandbox environment is critical for secure, efficient, and compliant account abstraction development. We deliver production-ready infrastructure, not just a testing playground.
01
Production-Identical Environment
Develop and test against a full-scale, isolated replica of mainnet. Our sandbox mirrors live conditions with real gas fees, network latency, and protocol behavior, eliminating deployment surprises.
1:1
Mainnet Parity
Zero Drift
State Consistency
02
Advanced Security & Compliance Testing
Integrate automated security scanners and compliance rule engines directly into your CI/CD pipeline. Test for vulnerabilities, regulatory adherence (e.g., OFAC sanctions screening), and smart contract exploits before deployment.
Pre-Deploy
Vulnerability Detection
Automated
Compliance Checks
03
Rapid Paymaster & Bundler Integration
Pre-configured integrations with major paymaster services (like Pimlico, Biconomy) and bundler nodes (ERC-4337). Test gas sponsorship models, batch transactions, and user onboarding flows in minutes, not weeks.
< 1 Hour
Integration Time
Multi-Vendor
Service Support
04
Deterministic User Simulation
Simulate thousands of concurrent user operations (UserOps) with programmable behaviors. Stress-test your wallet's gas economics, fee logic, and recovery mechanisms under predictable, repeatable loads.
10k+
Concurrent UserOps
Deterministic
Test Scenarios
05
Full-State Snapshot & Rollback
Capture the exact state of your smart accounts, contracts, and dependencies. Instantly rollback to any point for iterative testing, debugging complex multi-step flows, or comparing protocol upgrades.
Instant
State Capture
Any Point
Precise Rollback
06
Enterprise-Grade Observability
Gain deep visibility with built-in dashboards tracking UserOp lifecycle, gas consumption, bundler performance, and paymaster efficiency. Debug with structured logs and traces tailored for ERC-4337.
E2E Tracing
UserOp Lifecycle
Real-Time
Gas Analytics
Choose Your Path to Production
Implementation Tiers & Deliverables
A clear comparison of our structured implementation packages for your Account Abstraction wallet sandbox, from proof-of-concept to enterprise-grade deployment.
| Feature / Deliverable | Starter | Professional | Enterprise |
|---|---|---|---|
ERC-4337 Bundler & Paymaster Sandbox | |||
Custom Smart Account Development | Basic Templates | Custom Logic | Multi-Sig & Advanced Modules |
Gas Sponsorship & Fee Logic | Simple Rules | Dynamic Policies | AI-Optimized & Multi-Currency |
Smart Contract Security Audit | Automated Scan | Manual Review + Report | Full Audit + CertiK/OpenZeppelin Partnership |
Multi-Chain Deployment Support | Testnets Only | 1 Mainnet | Unlimited Mainnets (Ethereum, Polygon, Arbitrum, Base) |
Integration Support | Documentation | Technical Guidance (10 hrs) | Dedicated Engineer & Architecture Review |
Monitoring & Analytics Dashboard | Basic Metrics | Advanced Alerts & Logs | Custom SLA Dashboard & 24/7 SRE Support |
Time to Live Sandbox | 2 Weeks | 4-6 Weeks | 8-12 Weeks (Full Lifecycle) |
Ongoing Maintenance & Updates | Self-Service | 6 Months Included | Annual SLA with 99.9% Uptime |
Estimated Investment | $15K - $25K | $50K - $100K | Custom Quote ($150K+) |
how-we-deliver
AUDITED & SECURE
Custom Smart Contract Development
Enterprise-grade smart contracts built with security-first principles and battle-tested patterns.
We architect and deploy secure, gas-optimized smart contracts that form the core of your Web3 application. Our development process is anchored by comprehensive security audits and adherence to OpenZeppelin standards to mitigate risk from day one.
- Full Lifecycle Development: From initial design and
Solidity 0.8+coding to deployment and on-chain verification. - Protocol-Specific Expertise: Custom logic for
ERC-20,ERC-721,ERC-1155, DeFi primitives, DAOs, and cross-chain bridges. - Guaranteed Quality: Every contract undergoes rigorous unit testing and formal verification before mainnet deployment.
We don't just write code; we engineer trust. Our contracts are built to be secure, upgradeable, and maintainable for the long term.
Our team translates your business logic into efficient, auditable on-chain code, ensuring faster time-to-market and reduced technical debt. We provide clear documentation and a handover process that empowers your internal team.
tech-stack
ENTERPRISE-READY INFRASTRUCTURE
Built on Standard Protocols & Secure Practices
Our sandbox implementation is engineered for production, leveraging battle-tested standards and rigorous security protocols to ensure your wallet infrastructure is robust, scalable, and secure from day one.
03
Multi-Sig & Social Recovery
Configurable guardian frameworks and multi-signature policies for enterprise-grade key management, providing secure recovery options without single points of failure.
2-of-N
Flexible Signing
24h
Recovery Delay
04
Gas Abstraction & Sponsorship
Integrated paymaster support for gasless transactions and sponsored gas, enabling seamless user onboarding and predictable operational cost management.
0 Gas
For End-Users
ERC-20
Fee Payment
06
Rigorous Testing & Auditing
Comprehensive test suites with >95% coverage, plus integration with leading security firms for pre-deployment audits to ensure contract integrity.
>95%
Code Coverage
Third-Party
Security Audit
Account Abstraction Sandbox
Frequently Asked Questions
Get clear answers on our implementation process, timelines, and support for your custom AA wallet development.
We deliver a production-ready Account Abstraction sandbox in 2-4 weeks for standard ERC-4337 implementations. Complex features like multi-chain support or custom paymaster logic may extend this to 6-8 weeks. Our agile sprints ensure you have a functional prototype for internal testing within the first 10 days.
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