keyos

Hardware Nostr signer for Passport Prime — NIP-07 window.nostr provider with keys sealed to the device (KeyOS app + WebUSB browser extension)

Security · OpenPGP — create, import, inspect and edit OpenPGP keys on Passport Prime; derive them from an imported BIP-39 seed

Paper Wallet for Passport Prime — offline bitcoin gift bills with hardware-random keys, printable PNGs, and seed-recoverable backup keys

Text Editor for Passport Prime — browse the device's storage and edit text files, fully offline

Graffito for Passport Prime — personal notes written into real bitcoin transactions, composed and signed on a device with no network

PDF Viewer for Passport Prime — read PDFs rendered entirely on-device, strictly read-only

Image Viewer for Passport Prime — photos and animated GIFs decoded entirely on-device, strictly read-only

Coinjoin Signer for Foundation Passport Prime — unattended WabiSabi coinjoin signing for Wasabi Wallet (KeyOS app)

RETIRED — BIP-85 for Passport Prime; verified reference implementation, unshippable because KeyOS reserves master-seed access (GetSeed) for Foundation apps