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Open Source Hardware

KeepKey Firmware

Deterministic builds, reproducible security, and complete transparency. Verify every byte of code running on your device.

Deterministic & Reproducible Builds

100% Open Source Hardware & Software

Verify Every Byte Running on Your Device

KeepKey Hardware Device
KeepKey Board Schematic

Complete Hardware Transparency

Unlike other hardware wallets, KeepKey provides complete transparency—from PCB layouts to firmware source code. Every component is documented and verifiable.

Open Hardware Design

PCB schematics, fabrication files, and assembly drawings available for review and reproduction

Verifiable Firmware

Build the firmware yourself and verify it matches what's running on your device

DIY-Friendly

Build your own KeepKey from scratch with our comprehensive DIY guide

Why Open Source Firmware Matters

Trust through transparency—verify the code protecting your assets

Deterministic Builds

Build the firmware yourself and get the exact same binary every time. No hidden code, no backdoors—just verifiable security.

Build Instructions →

Firmware Verification

Cryptographically verify that the firmware running on your device matches the published source code. Don't trust—verify.

Build Your Own

Complete DIY guide with PCB files, schematics, and assembly instructions. Build a KeepKey from scratch for ultimate trust.

The DIY Hardware Wallet Philosophy

Learn why open-source hardware wallets are the future of Bitcoin security

Ready to Verify Your Security?

Explore the firmware source code, build it yourself, or dive into the DIY guide to build your own KeepKey from scratch.

KeepKey - Hardware Wallet for Cryptocurrency Security