We architect and deploy production-grade smart contracts that are secure by design. Every contract undergoes rigorous audits using both automated tools and manual review, ensuring your protocol's logic and user funds are protected from day one.
LABS
Services
ERC-4337 Identity Bundler Development
We build compliant smart account systems that natively integrate identity verification, enabling gas sponsorship, transaction batching, and access rules based on verified credentials.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, audited smart contract development for DeFi, NFTs, and enterprise applications.
- Custom Development: Tailored
Solidity/Rustcontracts for DEXs, lending protocols, NFT marketplaces, and DAOs. - Security First: Built with
OpenZeppelinstandards, formal verification, and multi-signature deployment workflows. - Full Lifecycle: From initial design and testing to mainnet deployment and ongoing upgrade management via proxies.
Reduce your time-to-market from months to weeks. We deliver audit-ready code in 2-4 weeks, with a proven track record of zero critical vulnerabilities in production.
key-features-cards
ENTERPRISE-GRADE INFRASTRUCTURE
Core Capabilities of Our Identity Bundler
Our Identity Bundler provides the critical on-chain infrastructure for ERC-4337 smart accounts, enabling secure, scalable, and user-friendly Web3 onboarding. We handle the complexity so you can focus on your product.
01
ERC-4337 Bundler Node
Fully managed, high-availability bundler node for submitting UserOperations to the EntryPoint. We ensure transaction reliability and handle mempool management, gas optimization, and network redundancy.
Key Benefit: Guaranteed transaction inclusion with 99.9% uptime SLA.
99.9%
Uptime SLA
< 200ms
Avg. Latency
02
Paymaster Integration
Seamless integration with custom or third-party paymasters (ERC-4337) to enable gasless transactions, sponsored sessions, and subscription-based fee models. We provide the SDK and APIs for flexible sponsorship logic.
Key Benefit: Remove onboarding friction with predictable gas cost management.
0.1%
Fee on Sponsored Tx
Multi-Chain
Support
03
Smart Account Factory
Deploy and manage ERC-4337 compliant smart account factories (e.g., SimpleAccountFactory, Biconomy, ZeroDev). We provide deterministic address calculation, batch deployments, and factory upgrade management.
Key Benefit: Scale user onboarding with predictable, gas-efficient account creation.
< 0.01 ETH
Deploy Cost
1M+
Accounts Deployed
04
UserOperation Simulation & Validation
Pre-flight simulation of UserOperations to prevent failed transactions and enforce security policies. Our service validates signatures, checks paymaster deposits, and simulates execution against local state.
Key Benefit: Protect user funds and improve UX by catching errors before they hit the chain.
100%
Failure Prevention
< 50ms
Simulation Time
05
Multi-Chain Operation
Run your identity bundler infrastructure across Ethereum, Polygon, Arbitrum, Optimism, and other EVM-compatible networks from a single dashboard. We manage RPC endpoints, chain-specific configurations, and cross-chain monitoring.
Key Benefit: Launch your product on any chain without rebuilding infrastructure.
10+
Supported Chains
Unified API
Interface
06
Enterprise Security & Monitoring
SOC 2 compliant infrastructure with real-time monitoring, alerting, and detailed analytics for all bundler activity. Includes audit logs, rate limiting, DDOS protection, and 24/7 incident response.
Key Benefit: Meet enterprise security requirements with verifiable compliance and operational transparency.
SOC 2
Compliant
24/7
Monitoring
benefits
DELIVERABLES
Business Outcomes for FinTechs & Web3 Startups
Our Account Abstraction Bundler service delivers measurable infrastructure improvements, enabling your team to focus on core product innovation.
01
Faster Time-to-Market
Deploy a production-ready, custom smart wallet stack in under 3 weeks. We provide the complete infrastructure—bundler, paymaster, and wallet factory—so you can launch your user onboarding flow without building from scratch.
< 3 weeks
To Production
90%
Dev Time Saved
02
Radically Improved User Onboarding
Eliminate seed phrase friction with gasless transactions and social logins. Our ERC-4337 compliant bundler enables seamless onboarding, converting more visitors into active users with a familiar Web2 experience.
70%+
Higher Sign-up Rate
0 ETH
User Gas Costs
03
Enterprise-Grade Security & Reliability
Run your user operations on infrastructure built with OpenZeppelin standards and monitored 24/7. We ensure high availability and protect against front-running and replay attacks for your critical financial transactions.
99.9%
Uptime SLA
< 2 sec
Op Finality
04
Predictable & Reduced Operational Cost
Convert variable gas costs into a fixed, predictable monthly fee. Our paymaster service abstracts gas sponsorship logic, allowing you to model customer acquisition costs accurately and scale efficiently.
40%
Lower Gas Costs
Fixed Fee
Cost Model
06
Dedicated Technical Partnership
Get direct access to our engineering team for integration support, custom feature development, and performance tuning. We act as an extension of your tech team, ensuring your wallet infrastructure scales with your business.
Structured Implementation Roadmap
Phased Development & Delivery
A transparent, milestone-driven approach to delivering your Account Abstraction Smart Wallet Identity Bundler. We de-risk development with clear deliverables, staged payments, and iterative feedback.
| Phase & Deliverable | Timeline | Key Outcomes | Client Commitment |
|---|---|---|---|
Phase 1: Architecture & Smart Contracts | 2-3 weeks | Audited core smart contracts (ERC-4337), gas-optimized bundler design, and technical specification document. | Approval of architecture & 30% payment |
Phase 2: Bundler Node & RPC Layer | 3-4 weeks | Fully functional bundler node with mempool, UserOperation simulation, and JSON-RPC API endpoints for integration. | Integration feedback & 40% payment |
Phase 3: Identity & Paymaster Integration | 2-3 weeks | Social/Passkey signer modules, custom paymaster logic for gas sponsorship, and comprehensive test suite. | Feature sign-off & 20% payment |
Phase 4: Deployment & Production Readiness | 1-2 weeks | Multi-chain deployment (Ethereum/Polygon/Base), monitoring dashboard setup, and final security review. | Final 10% payment & production launch |
Ongoing: Support & Maintenance | Post-launch | Optional SLA with 99.9% uptime, priority support, and quarterly protocol updates. | Monthly/Annual retainer (optional) |
Total Estimated Timeline | 8-12 weeks | Production-ready, audited Account Abstraction infrastructure. | Staged investment aligned with deliverables |
how-we-deliver
PROVEN METHODOLOGY
Our Development & Integration Process
A structured, four-phase approach to deliver a secure, production-ready Account Abstraction stack that integrates seamlessly with your existing infrastructure.
01
Architecture & Discovery
We analyze your user flows and technical stack to design a custom AA architecture. This includes selecting the optimal bundler (EIP-4337), wallet factory, and paymaster strategy for your use case.
1-2 weeks
Design Phase
3+ options
Architecture Reviewed
02
Smart Contract Development
Our team builds and audits custom ERC-4337 Account Factory and Paymaster contracts. We implement gas sponsorship logic, social recovery modules, and batch transaction capabilities.
Solidity 0.8+
Code Standard
OpenZeppelin
Security Base
03
Bundler Integration & API Layer
We deploy and configure a high-availability bundler node (e.g., Stackup, Alchemy) and build a robust backend API for user operation submission, gas estimation, and transaction monitoring.
99.9% SLA
Bundler Uptime
< 500ms
API Latency
04
SDK Integration & Go-Live
We provide a lightweight SDK for your frontend and conduct end-to-end testing. Final security review and mainnet deployment with 24/7 monitoring and support from day one.
2-4 weeks
Integration Time
Full Audit
Pre-Launch Check
Infrastructure Decision Matrix
Build vs. Buy: Custom Bundler vs. Generic SDKs
A technical and economic comparison of developing a custom ERC-4337 bundler in-house versus leveraging Chainscore's managed service versus using a generic open-source SDK.
| Critical Factor | Build In-House | Generic SDK | Chainscore Bundler |
|---|---|---|---|
Time to Production | 6-12 months | 2-4 months | 2-4 weeks |
Upfront Dev Cost | $250K - $500K+ | $50K - $100K | $0 |
Security & Audit Burden | Your responsibility | Limited / Community | Enterprise-audited, insured |
Gas Optimization | Custom R&D required | Basic defaults | Proprietary algorithms |
MEV Protection | Complex to implement | Not included | Built-in, configurable |
Multi-Chain Support | Per-chain deployment | Manual configuration | Unified dashboard, 15+ chains |
SLA & Uptime (99.9%) | Your team's responsibility | No SLA | Guaranteed with monitoring |
Ongoing Mempool Maintenance | Full-time DevOps engineer | Manual updates | Fully managed service |
Paymaster Integration | Custom development | Basic hooks | Pre-built, compliant solutions |
Total Cost of Ownership (Year 1) | $400K - $750K | $100K - $200K | $60K - $120K |
Account Abstraction & Smart Wallets
Frequently Asked Questions
Get clear answers on our development process, security, and timelines for your smart wallet infrastructure.
A standard ERC-4337 smart wallet deployment with core features (social login, gas sponsorship, batch transactions) takes 2-4 weeks. Complex implementations with custom modules, multi-chain support, or advanced recovery mechanisms typically require 6-8 weeks. We provide a detailed project plan with milestones after the initial technical discovery.
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