Step 1
Select a board
Bowser Wallet web installer
Generic ESP32 microcontrollers, which no one knows you will turn into a hardware wallet.
Completely Free and Open-Source
Minimal supply chain attack
WebSerial or SD card support
Excellent TRNG, or dice support
<$20
Step 2
Flash your device
Tip: Don’t see your board? Use a different cable.
A new installation can erase existing device data. Verify the SHA-256 shown after flashing before using the wallet.
Step 3
Support Bowser
Tip: Use a PO box for delivery.
After installation