We architect and deploy custom smart contracts on EVM and Solana that form the operational backbone of your protocol. Our development lifecycle includes formal verification, gas optimization audits, and comprehensive unit testing to ensure security and efficiency from day one.
LABS
Services
SSI Wallet API & SDK Development
We build robust developer tools—SDKs and REST/GraphQL APIs—that enable third-party applications to integrate SSI wallet functionalities like authentication and credential requests with minimal development overhead.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built for scale and compliance.
Deliver a battle-tested, audited contract suite in 4-6 weeks, not months.
- Custom Logic:
ERC-20,ERC-721,ERC-1155, staking, vesting, governance, and bespoke DeFi primitives. - Security First: Development follows OpenZeppelin standards and undergoes peer review before external audit.
- Full Lifecycle: We handle deployment, upgradeability planning with Transparent Proxies or
UUPS, and provide monitoring dashboards.
key-features-cards
DEVELOPER-FIRST ARCHITECTURE
Core Capabilities of Our SSI Developer Tools
Build secure, scalable, and compliant self-sovereign identity solutions with our battle-tested SDKs and APIs. We deliver production-ready tools that abstract away the complexity of decentralized identity protocols.
benefits
DEVELOPER-FIRST ARCHITECTURE
Why Choose Our SSI Integration Tools
Our tools are engineered for technical leaders who need production-ready SSI, not proof-of-concept frameworks. We deliver the infrastructure to build, scale, and secure decentralized identity applications.
01
Production-Ready SDKs
Pre-built SDKs for Node.js, Python, and React Native that handle the complexity of DID operations, credential issuance, and verification. Integrate core SSI logic in days, not months.
4 SDKs
Languages/Frameworks
< 1 week
Integration Time
02
Enterprise-Grade Security
Built on W3C DID/VC standards with OpenID for Verifiable Credentials (OID4VC) support. All cryptographic operations are hardware-secure and our libraries undergo annual third-party audits.
W3C & OIDF
Standards Compliant
Annual
Security Audits
03
High-Performance Wallet API
A managed API for credential lifecycle management with sub-100ms p95 latency and 99.95% uptime SLA. Scales to millions of users without managing key infrastructure.
99.95%
Uptime SLA
< 100ms
P95 Latency
04
Multi-Protocol & Chain Support
Interoperable by design. Supports Ethereum (ERC-725/735), Polygon, Solana, and ION (Bitcoin) for DIDs, with pluggable resolvers for future protocols and registries.
4+
Blockchain Protocols
Pluggable
Architecture
The Strategic Decision for Your Product
Build vs. Buy: SSI Wallet Integration
A detailed comparison of the time, cost, and risk involved in developing a self-sovereign identity wallet in-house versus leveraging our production-ready API and SDK.
| Factor | Build In-House | Chainscore API & SDK |
|---|---|---|
Time to Production | 6-12+ months | 4-8 weeks |
Initial Development Cost | $250K - $600K+ | $50K - $150K |
Security & Audit Burden | High (Your Risk) | Low (Our Guarantee) |
W3C DID & VC Standards | Custom Implementation | Pre-built Compliance |
Multi-Chain & L2 Support | Per-Chain Integration | Unified API (EVM, Solana, etc.) |
Ongoing Maintenance & Upgrades | Full Engineering Team | Managed Service (Optional SLA) |
Key Management & Recovery | Build from Scratch | Enterprise-Grade Vault Included |
Total Cost of Ownership (Year 1) | $400K - $800K+ | $75K - $200K |
Expertise Required | Specialized Crypto Team | Your Existing App Team |
how-we-deliver
PREDICTABLE, TRANSPARENT, AND SECURE
Our Delivery Process: From Specification to Production
We deliver production-ready SSI Wallet infrastructure on a fixed timeline. Our phased approach ensures technical alignment, security-first development, and seamless integration into your existing stack.
01
Phase 1: Discovery & Specification
We conduct a technical deep-dive to define DID methods (did:ethr, did:key), credential schemas (W3C VC-DM), and integration requirements. You receive a detailed technical specification and project roadmap.
Client Value: Clear scope, defined success metrics, and alignment on architecture before a single line of code is written.
1-2 weeks
Duration
100%
Scope Locked
02
Phase 2: Architecture & Security Design
Our architects design the wallet's core modules: key management (HSM/MPC), secure storage, and agent protocols. We implement security patterns from the start, including audit trails and compliance with NIST 800-63B guidelines.
Client Value: A future-proof, secure foundation that scales and passes enterprise security reviews.
SOC 2 Type II
Framework
Zero-Trust
Architecture
03
Phase 3: Core SDK & API Development
We build the production-grade TypeScript/Flutter SDKs and REST/GraphQL APIs for credential issuance, presentation, and verification. Includes pre-built UI components and comprehensive developer documentation.
Client Value: Accelerate your frontend team's work with battle-tested, documented SDKs that handle complex SSI flows.
< 100ms
API Latency
TypeScript/Flutter
SDK Support
04
Phase 4: Integration & Staging Deployment
We integrate the wallet APIs into your staging environment, configure cloud infrastructure (AWS/GCP), and set up CI/CD pipelines. Includes load testing and a full security penetration test report.
Client Value: A fully integrated, tested system in a production-like environment, ready for final validation.
99.9% SLA
Uptime Target
Full Audit
Security
05
Phase 5: Production Launch & Support
We manage the production deployment, monitor system health, and provide 24/7 SRE support for critical issues. Includes onboarding for your engineering team and a detailed runbook.
Client Value: A smooth, zero-downtime launch and the confidence of expert support, freeing your team to focus on product growth.
24/7 SRE
Support
< 15 min
Critical Response
tech-stack
INTEROPERABILITY & SECURITY
Standards-Based, Future-Proof Technology
Our SSI Wallet API & SDK are built on open, verifiable standards, ensuring your digital identity solution integrates seamlessly today and remains compatible with the decentralized web of tomorrow.
04
Modular, Upgradable Architecture
A plugin-based SDK architecture allows you to swap cryptographic suites, storage layers, and credential formats without a full rewrite, protecting your investment.
Future-Proof
Design
Weeks
Saved on Upgrades
05
Formal Security Audits
Our core cryptographic libraries and protocol implementations undergo regular, formal audits by leading security firms, with reports available to enterprise clients.
Zero Critical
Audit Findings
Quarterly
Review Cycle
06
Multi-Protocol & Chain Agnostic
Designed for Ethereum, Polygon, and other EVM chains, with extensible modules for Solana, Cosmos, and beyond. Deploy a unified identity layer across your multi-chain strategy.
EVM+
Native Support
Modular
Chain Support
Technical & Commercial Details
SSI Wallet API & SDK Development FAQs
Get clear, specific answers to the most common questions CTOs and product leads ask when evaluating SSI wallet development partners.
For a standard, multi-platform SSI wallet with core DID management, credential issuance/verification, and basic key management, we deliver a production-ready MVP in 6-8 weeks. Complex integrations (e.g., custom biometrics, advanced revocation registries, cross-chain DID resolution) can extend this to 10-12 weeks. We follow a phased delivery model with weekly demos, ensuring alignment and allowing for incremental feature activation.
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