We architect and deploy custom smart contracts that form the backbone of your Web3 product. Our development process is built on security-first principles, utilizing OpenZeppelin libraries and rigorous internal audits to mitigate risk before deployment to mainnet.
LABS
Services
Non-Custodial Wallet Architecture Audit
A comprehensive security assessment of your entire non-custodial wallet stack, from frontend libraries and key storage to transaction construction and broadcast mechanisms.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built for speed, scale, and compliance.
- Token Standards:
ERC-20,ERC-721,ERC-1155, and custom implementations. - DeFi Primitives: Automated Market Makers (AMMs), lending/borrowing pools, staking mechanisms.
- Enterprise Logic: Multi-signature wallets, governance systems, and access-controlled workflows.
- Gas Optimization: Code reviewed for efficiency, targeting up to 40% lower transaction costs.
From initial concept to mainnet launch, we deliver audit-ready contracts in 2-4 weeks, accelerating your time-to-market while ensuring robustness.
key-features-cards
COMPREHENSIVE SECURITY REVIEW
What Our Architecture Audit Covers
Our deep-dive audit analyzes every architectural layer of your non-custodial wallet, from key management to transaction lifecycle, delivering actionable insights to harden your security posture and build user trust.
01
Key & Secret Management
We audit your key generation, storage, and signing flows against industry standards like BIP-32/39/44 and MPC protocols. We identify vulnerabilities in entropy sources, in-memory handling, and secure enclave integration to prevent private key extraction.
OWASP Top 10
Compliance Checked
Zero-Trust
Memory Model
02
Transaction Signing & Validation
We scrutinize the entire transaction construction, simulation, and signing pipeline. This includes review of EIP-712 structured data, replay protection, nonce management, and gas estimation logic to prevent phishing and front-running attacks.
Multi-Chain
Protocol Support
Simulation
Pre-Sign Checks
03
RPC & Node Interaction
We evaluate the security and reliability of your connections to blockchain nodes and RPC providers. This covers rate limiting, request validation, error handling, and fallback mechanisms to ensure uptime and protect against node spoofing.
99.9% SLA
Reliability Target
MITM Protection
Connection Security
04
Smart Contract Integration
We analyze how your wallet interacts with external smart contracts (DEXs, bridges, dApps). We review approval management, calldata decoding, and security checks to protect users from malicious contracts and signature hijacking.
ERC-20/721
Standard Support
Permission Scopes
Reviewed
05
Client-Side Security & Storage
We assess local data persistence, encryption at rest, and secure deletion practices. This includes audit of IndexedDB/AsyncStorage usage, biometric lock integration, and protection against forensic data recovery on mobile/web clients.
AES-256-GCM
Encryption Standard
Platform Audits
iOS/Android/Web
06
Architecture & Code Review
Beyond specific components, we provide a holistic assessment of your codebase structure, dependency management, and upgradeability patterns. We identify architectural anti-patterns and recommend scalable, maintainable security practices.
SOLID Principles
Adherence Reviewed
Upgrade Paths
Designed
benefits
BEYOND CODE REVIEW
Why a Holistic Audit is Critical
A secure non-custodial wallet is a complex system. Our architecture audit examines the entire attack surface—from smart contracts and key management to frontend integrations and operational security—ensuring your product protects user assets at every layer.
Choose Your Security Level
Comprehensive Audit Scope & Deliverables
Our tiered audit packages are designed to match the scale and complexity of your non-custodial wallet architecture, from early-stage startups to enterprise-grade deployments.
| Audit Component | Essential | Professional | Enterprise |
|---|---|---|---|
Smart Contract Core Logic | |||
Key Management & Signing | |||
Transaction Relayer & Gas Abstraction | |||
Multi-Chain & Cross-Chain Bridge Integration | |||
Penetration Testing (Web/Mobile Frontend) | |||
Formal Verification (Critical Functions) | |||
Automated Monitoring Setup | |||
Remediation Support & Re-audit | 1 round | 2 rounds | Unlimited |
Response Time SLA | 72h | 24h | 4h |
Final Report & Executive Summary | |||
Typical Timeline | 2-3 weeks | 3-4 weeks | 4-6 weeks |
Starting Price | $15,000 | $45,000 | Custom Quote |
process-walkthrough
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built by Web3-native engineers.
We architect and deploy custom smart contracts on EVM and Solana that are secure, gas-optimized, and tailored to your exact business logic. Every contract undergoes a rigorous audit process to protect your users and assets.
- From Concept to Mainnet: Full lifecycle development from technical design to deployment and monitoring.
- Security-First: Built with
OpenZeppelinstandards and battle-tested patterns. - Protocol Specialists: Expertise in
ERC-20,ERC-721,ERC-1155, DeFi primitives, and custom logic. - Guaranteed Outcomes: Deliver a production-ready MVP in 2-4 weeks with clear documentation.
We don't just write code; we deliver the secure, auditable foundation your application needs to scale with confidence.
Choosing the Right Security Assessment
Architecture Audit vs. Standard Code Review
A Non-Custodial Wallet Architecture Audit is a deep, holistic security assessment beyond a standard code review. This table compares the scope, deliverables, and value of each approach to help you choose the right level of rigor for your project.
| Assessment Focus | Standard Code Review | Chainscore Architecture Audit |
|---|---|---|
Scope | Individual smart contracts or modules | Full system: contracts, frontend, backend, key management |
Security Model Analysis | ||
Key Management & Signing Flow Review | Basic | Deep-dive with threat modeling |
Gas Optimization & Cost Analysis | Limited | Comprehensive, with upgrade path |
Third-Party Dependency Audit | ||
Formal Verification Recommendations | ||
Architecture Risk Report | ||
Remediation Support & Re-Audit | Optional | Included (1 round) |
Time to Completion | 1-2 weeks | 3-4 weeks |
Typical Investment | $5K - $15K | $25K - $75K+ |
Non-Custodial Wallet Architecture
Frequently Asked Questions
Get clear answers on our audit process, timeline, and security methodology for your wallet's core architecture.
We employ a multi-layered, manual-first audit process focused on the unique risks of non-custodial systems. This includes: 1) Architecture & Design Review assessing key management, transaction flow, and state management patterns. 2) Smart Contract Security Analysis using static/dynamic analysis and manual review against OWASP Top 10 and SWC Registry. 3) Cryptographic Implementation Review of signature schemes (ECDSA, EdDSA), key derivation, and secure enclave usage. 4) Integration & Client-Side Review for SDKs, browser extensions, and mobile apps. We produce a detailed report with risk severity ratings and actionable remediation guidance.
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