SafeKeepVault

The Ultimate Bitcoin Cold Storage Device is Already on Your Desk.

SafeKeepVault is a custom-hardened Linux OS that flashes to any USB flash drive, instantly turning your existing PC into a powerful, secure Bitcoin cold storage device.

• Open Source

  Fully auditable code — every line is public and verifiable. No black boxes, no proprietary firmware.

• Bitcoin Only

  Built exclusively for Bitcoin self-custody. No altcoin distractions, no bloat.

• True Air Gap

  Network, Bluetooth, and storage interfaces are locked at the OS level before your session begins. Data passes in and out via QR code — your keys never have a path to the internet.

• No Ecosystem Lock

  Works with Sparrow, Specter, Electrum, Nunchuk, Blue Wallet, and others. Use the coordinator you already know.

• No Blind Signing

  Every transaction is fully decoded and displayed before your key is involved. You verify the destination address and amount on a full-size screen before signing is unlocked.

• Passphrase Support

  Full BIP-39 passphrase support. Add a 25th word to your seed for an additional layer of protection that makes your seed phrase useless without it.

• Shamir & Seed XOR Backup

  Split your seed into multiple shares using Shamir Secret Sharing or Seed XOR. Distribute the pieces so no single location holds your complete backup.

Repurpose, Don't Replace

If you have a PC and a 4GB flash drive, you already have everything you need. A full-size screen and keyboard make verifying transaction details effortless, and SafeKeepVault’s sixteen built-in tools handle every step of the self-custody workflow — from generating your first seed phrase to signing complex multisig transactions.

• Universal Compatibility

  Runs on any x86 laptop or desktop using a standard 4GB+ flash drive. Supports most internal webcams or external cameras.

• Watch Wallet Integration

  Works seamlessly with your favorite Bitcoin wallet software. Export your public key, build transactions in your coordinator, and sign them air-gapped using SafeKeepVault.

• QR-Powered Unlock

  Store your vault password as a QR code on your phone. Display it to the webcam on every boot to decrypt instantly — no long password to type.

• Encrypted Storage

  Safely locks away your seed phrase in a dedicated, AES-256 encrypted partition on the flash drive.

Comprehensive Utility.

• 16-Tool Suite SafeKeepVault covers every step of the self-custody workflow — seed generation, signing, multisig coordination, encrypted backups, and more — in a single, offline environment.
• Temporary or Encrypted The choice is yours at every boot: operate in Temporary Mode for a session that leaves no trace, or use the Encrypted Vault to store your seed securely.
• Optical Transmission Move unsigned and signed transactions between devices via high-density QR codes — no cables, no exposed ports, no physical connection to a networked machine.