We architect and deploy production-ready smart contracts that form the immutable backbone of your Web3 application. Our development process is built on security-first principles, leveraging battle-tested patterns from OpenZeppelin and rigorous internal audits to mitigate risk before deployment.
LABS
Services
Privacy-First Bitcoin Wallet SDK
A developer toolkit for embedding advanced privacy features like CoinJoin, PayJoin, and sophisticated address management into custom wallets, enabling your product to offer superior privacy by default.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, gas-optimized smart contracts built to your exact specifications.
Deliver a secure, functional MVP in as little as 2-4 weeks with our streamlined development sprints.
- Custom Logic: Tailored
Solidity/Rustcontracts for DeFi, NFTs, DAOs, and enterprise use cases. - Gas Optimization: Expert-level code to minimize transaction fees and enhance user experience.
- Full Audit Trail: Comprehensive documentation and
Hardhat/Foundrytest suites for every contract.
key-features-cards
ENTERPRISE-GRADE MODULES
Core Privacy Components We Deliver
Our SDK provides battle-tested, audited privacy primitives that integrate seamlessly into your existing wallet infrastructure, ensuring user sovereignty without sacrificing compliance.
06
Compliance & Monitoring Module
Enterprise-ready tools for regulatory adherence without compromising privacy. Includes configurable watchlist screening (OFAC), transaction graph analysis for internal risk scoring, and audit trail generation.
API-First
Integration
GDPR/Crypto Travel Rule
Framework Ready
benefits
THE COST OF DIY
Why Choose Our SDK Over Building In-House
Building a secure, privacy-first Bitcoin wallet from scratch requires deep protocol expertise and significant ongoing maintenance. Our SDK delivers enterprise-grade infrastructure so your team can focus on your core product.
02
UTXO Management & Fee Optimization
Our SDK handles complex UTXO selection, batch transaction construction, and dynamic fee estimation. This reduces on-chain costs by up to 40% compared to naive implementations.
Up to 40%
Fee Reduction
< 100ms
UTXO Selection
04
Reduced Time-to-Market
Go from concept to a secure, compliant wallet in weeks, not years. Our SDK includes pre-built modules for onboarding, compliance checks, and multi-chain readiness.
< 4 weeks
To Production
5+ chains
Native Support
06
Compliance & Regulatory Readiness
Pre-integrated tools for Travel Rule compliance (TRISA), address screening, and transaction monitoring. Accelerate licensing approvals with auditable, compliant architecture.
TRISA VASP
Integration
10+ Jurisdictions
Guidance
Make an informed infrastructure decision
Build vs. Buy: The Privacy SDK Decision Matrix
Compare the total cost, risk, and time investment of building a privacy-preserving Bitcoin wallet SDK from scratch versus using Chainscore's production-ready solution.
| Factor | Build In-House | Chainscore SDK |
|---|---|---|
Development Timeline | 6-12 months | 4-8 weeks |
Initial Engineering Cost | $250K - $500K+ | $25K - $75K |
Zero-Knowledge Proof Expertise Required | Critical (Hire specialists) | Included (Our core competency) |
Security Audit & Penetration Testing | Additional $50K - $100K | Included (Pre-audited modules) |
Ongoing Maintenance & Updates | 2-3 FTE engineers | Handled by Chainscore |
Support for Latest Protocols (e.g., Taproot, MuSig2) | Your team's R&D | Automatic, versioned updates |
Time to First Secure Transaction |
| < 2 weeks |
Total Year 1 Cost (Est.) | $300K - $600K+ | $50K - $150K |
how-we-deliver
STRUCTURED IMPLEMENTATION
Our Delivery Process: From Integration to Launch
A predictable, milestone-driven approach that delivers a production-ready, privacy-first Bitcoin wallet SDK in your application within weeks, not months.
01
Architecture & Integration Planning
We conduct a technical deep-dive to map your existing stack (mobile, web, backend) to our SDK's modules. You receive a detailed integration blueprint covering key management, UTXO handling, and privacy layer configuration.
1-2 days
Kickoff & Scoping
Detailed Blueprint
Deliverable
02
SDK Configuration & Environment Setup
Our team handles the complete SDK initialization: generating secure entropy for hierarchical deterministic (HD) wallets, configuring CoinJoin coordination endpoints, and setting up encrypted local storage for your target platforms (iOS, Android, Web).
Pre-configured
Test Environment
BIP32/39/44
Standards Compliant
03
Core Feature Implementation & Testing
We integrate and rigorously test the core wallet functions: generating addresses, building & signing PSBTs (Partially Signed Bitcoin Transactions), and implementing privacy features like PayJoin. Includes comprehensive unit and integration test suites.
100% Coverage
Unit Tests
PSBT, PayJoin
Core Features
04
Security Hardening & Penetration Testing
Your implementation undergoes internal security review against OWASP Top 10 and blockchain-specific threats. We simulate attacks on key storage, transaction signing, and network communication to ensure fund safety.
Internal Audit
Security Review
Threat Model
Deliverable
05
Staging Deployment & Load Testing
We deploy the integrated SDK to your staging environment and execute load tests simulating high-volume transaction scenarios. We validate performance, fee estimation accuracy, and synchronization under network stress.
> 1000 TPS
Simulated Load
Performance Report
Deliverable
06
Production Launch & Monitoring Support
We assist with the production deployment and provide 30 days of enhanced monitoring support. We track SDK health metrics, error rates, and privacy set sizes to ensure a smooth user launch.
30 Days
Enhanced Support
Health Dashboard
Monitoring
security-approach
CORE SERVICE
Smart Contract Development
Secure, audited smart contracts built for production by Web3-native engineers.
We architect and deploy custom smart contracts that are secure, gas-optimized, and upgradeable from day one. Our development process is built for the mainnet, not just a test environment.
- Security-First Development: Every line of code follows
OpenZeppelinstandards and undergoes peer review before our formal audit process. - Production-Ready Patterns: We implement upgradeable proxies, gas-efficient data structures, and comprehensive event logging for real-world use.
We deliver a fully audited, deployable contract suite in as little as 2-4 weeks, complete with documentation and a security report.
Our expertise spans the full spectrum of token standards and DeFi primitives:
- Tokens: Custom
ERC-20,ERC-721,ERC-1155with advanced minting, vesting, and governance logic. - DeFi: Automated Market Makers (AMMs), staking pools, yield aggregators, and lending protocols.
- Infrastructure: Multi-sig wallets, cross-chain bridges, and oracle integration layers.
Privacy-First Bitcoin Wallet SDK
Frequently Asked Questions
Get clear answers on integration, security, and support for our enterprise-grade Bitcoin wallet SDK.
A standard integration takes 2-3 weeks from kickoff to production deployment. This includes environment setup, core wallet implementation, and basic feature integration. Complex customizations, such as advanced multi-signature schemes or custom coin support, may extend the timeline, which we scope and quote for upfront.
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