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LABS
Services
SSI Wallet Smart Contract Development (EVM)
We design, develop, and audit the core smart contracts for your Self-Sovereign Identity wallet, including account abstraction modules, credential status registries, and on-chain verification logic for Ethereum and EVM-compatible chains.
Chainscore © 2026
overview
FOUNDATION
Blockchain Infrastructure
Enterprise-grade, multi-chain RPC and node infrastructure with 99.9% uptime SLA.
- Multi-Chain RPC & Nodes: Access to
Ethereum,Polygon,Solana, andBasewith dedicated endpoints. - Guaranteed Performance: 99.9% uptime SLA, sub-100ms response times, and unlimited request tiers.
- Enhanced APIs: Access historical data, debug traces, and archive nodes without extra configuration.
- Security & Compliance: SOC 2 Type II compliant infrastructure with DDoS protection and private VPC deployment.
Deploy production-ready infrastructure in hours, not weeks. Focus on your product, not node syncing or rate limits.
key-features-cards
PRODUCTION-READY COMPONENTS
What We Deliver: Core Contract Modules
We deliver audited, gas-optimized smart contract modules that form the secure foundation of your SSI wallet. Each component is built on OpenZeppelin standards and designed for interoperability, reducing your development time and technical risk.
04
Governance & Access Control
Flexible permissioning systems using OpenZeppelin's AccessControl, with custom roles for issuers, verifiers, and admins. Includes upgradeability patterns (Transparent/UUPS) and multi-sig integration for secure management.
OpenZeppelin
Audited Base
UUPS/Transparent
Upgrade Pattern
05
Gas-Optimized State Management
Core storage logic designed for minimal on-chain footprint and cost. We implement efficient data structures, Merkle proofs for off-chain data, and batch updates to keep transaction fees predictable and low.
Merkle Proofs
Off-Chain Data
> 40% Saved
Avg. Gas Reduction
06
Audit-Ready Code & Documentation
Every module is delivered with comprehensive NatSpec comments, technical specifications, and test coverage exceeding 95%. The code is structured for easy third-party audit by firms like ChainSecurity or CertiK.
> 95%
Test Coverage
Full NatSpec
Documentation
benefits
EXPERTISE & DELIVERY
Why Partner for SSI Contract Development
Building secure, compliant, and interoperable SSI wallets requires deep protocol expertise and battle-tested security practices. We deliver production-ready smart contracts that form the trust layer for your identity solution.
01
Security-First Architecture
We build on OpenZeppelin standards and implement formal verification for critical logic. Every contract undergoes rigorous internal review and is designed for third-party audits by firms like Trail of Bits or ConsenSys Diligence.
Zero
Critical Vulnerabilities in Production
100%
OpenZeppelin Compliance
02
Protocol-Specific Expertise
We implement core SSI standards like W3C Verifiable Credentials, Decentralized Identifiers (DIDs), and ERC-1056/ERC-1484 for Ethereum. Our contracts ensure seamless interoperability with existing identity networks and verifier ecosystems.
W3C VC
Standards Compliant
ERC-1056/1484
EVM Protocol Support
03
Gas-Optimized & Scalable
We write efficient Solidity (0.8+) with gas costs as a primary constraint. Our designs use proxy patterns for upgradability and minimize on-chain storage to keep user transaction fees low, even at scale.
< 40%
Average Gas Reduction
UUPS
Upgrade Pattern
04
End-to-End Integration
We deliver more than contracts—we provide the full SDK, frontend libraries (React/Web3.js/Ethers.js), and documentation needed to integrate the wallet logic into your application within weeks, not months.
< 3 weeks
To Production Prototype
Full SDK
Included Delivery
Choose the right path for your SSI wallet launch
Structured Development Packages
Compare our tiered SSI smart contract development packages, designed to match your project's stage, security requirements, and operational needs.
| Feature / Deliverable | Starter | Professional | Enterprise |
|---|---|---|---|
Core SSI Smart Contracts (DID, VC, VP) | |||
Custom Claim Schema Development | 1 Standard | Up to 5 | Unlimited |
Gas-Optimized Contract Architecture | Basic | Advanced | Bespoke |
Smart Contract Security Audit | 1 Pass | 2 Passes + Fixes | 3 Passes + Formal Verification |
Multi-Chain Deployment (EVM) | 1 Network | Up to 3 Networks | Unlimited Networks |
Deployment & Configuration Support | |||
Integration Guide & SDK | Basic Docs | Comprehensive SDK | Dedicated Engineer Support |
Post-Launch Monitoring & Alerting | 30 Days | 90 Days | 12 Months SLA |
Emergency Response Time SLA | 24h | 4h | |
Estimated Delivery Timeline | 3-4 Weeks | 6-8 Weeks | Custom |
Starting Price | $25,000 | $75,000 | Custom Quote |
tech-stack
BUILT ON PROVEN STANDARDS
Technology & Protocol Foundation
Our SSI wallet smart contracts are engineered on battle-tested EVM foundations, ensuring security, interoperability, and long-term viability for your identity solution.
05
Gas-Optimized EVM Architecture
We write optimized Solidity 0.8+ code with efficient storage patterns and batch operations, minimizing transaction costs for end-users and improving wallet adoption.
30-50%
Typical Gas Reduction
Solidity 0.8+
Language Version
06
Modular & Upgradeable Design
Built using proxy patterns (UUPS/Transparent), allowing secure, permissioned upgrades to logic without migrating user data or breaking integrations.
Zero-Downtime
Upgrades
Modular Logic
Design Pattern
security
CORE INFRASTRUCTURE
Custom Smart Contract Development
Secure, production-ready smart contracts built by Web3 experts to power your protocol.
We architect and deploy the foundational logic for your dApp, token, or DeFi protocol. Our engineers deliver audit-ready code using Solidity 0.8+ and OpenZeppelin libraries, ensuring security and gas efficiency from day one.
Reduce your go-to-market risk with contracts designed for real-world use, not just proof-of-concept.
- Token Systems: Custom
ERC-20,ERC-721, andERC-1155implementations with tailored minting, vesting, and governance logic. - DeFi Primitives: Automated Market Makers (AMMs), staking pools, and yield aggregators with optimized gas costs.
- Protocol Logic: Multi-signature wallets, upgradeable proxy patterns, and cross-chain messaging (CCIP) integrations.
- Security First: Every contract undergoes internal review against common vulnerabilities before delivery.
Technical & Commercial Questions
SSI Smart Contract Development FAQ
Answers to the most common questions from CTOs and founders about our EVM-based SSI wallet smart contract development process, security, and delivery.
A standard SSI wallet deployment with core features (DID registry, credential verification, basic recovery) takes 2-4 weeks from kickoff to mainnet deployment. Complex systems with custom governance, multi-chain support, or advanced revocation logic typically require 6-8 weeks. We follow a phased delivery model with weekly sprints and staging deployments for continuous feedback.
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