Multi-Sig Crypto Wallet Development

I need a secure, multi-signature wallet that lets my team send and receive Bitcoin, Ethereum, and Litecoin with confidence. The core build should support standard send/receive flows while enforcing multi-sig approval rules on every outbound transaction.

Beyond the signing logic, the interface (web or cross-platform mobile is fine—use whichever stack you’re fastest with) must log a clear, filterable transaction history and keep an automated, encrypted backup of all critical data so nothing is ever lost if a device fails.

Code quality and security are top priorities, so clean key management, thorough unit tests, and concise developer documentation are part of the expected hand-off. If you already have opinions on optional extras like 2FA or hardware-wallet integration, feel free to propose them, but they are not mandatory for the first milestone.

Deliverables
• Fully functional multi-sig wallet supporting BTC, ETH, LTC
• Transaction history module with search/filter
• Automated, encrypted backup routine
• Source code, tests, and setup instructions

I’m ready to get started as soon as I see a brief outline of your planned architecture and timeline.