Product
Graffito Bitcoin · Notes
Personal notes on the bitcoin blockchain. Compose, encrypt, and sign completely offline — on a Passport Prime or your own devices — then broadcast from anywhere. Your words, sealed by your keys, carried by the most durable public record ever built.
Apple, the Apple logo, and TestFlight are trademarks of Apple Inc. Google Play and the Google Play logo are trademarks of Google LLC.
Pi Tunnel Mac · Menu bar
See at a glance whether your SSH tunnel to a Raspberry Pi is up. The menu bar icon is a tunnel arch with one brick per forwarded port, lit when that port answers; open the missing ones or close them all from the menu. Free and open source.
Open source
PGP Keychain
OpenPGP keys on Passport Prime
Paper Wallet
Offline bitcoin gift bills
BIP-85 Seeds
Deterministic child seeds
Text Editor
Edit text on the Prime
PDF Viewer
Pure-Rust PDF reading
Image Viewer
Safe image decodingVerify our apps
Passport Prime apps from ByteApps are signed with our publisher certificate — byteapps.crt. Before trusting it on your device (Settings > Apps > Allowed Publishers), check that its fingerprint matches:
1bca27c8e765a77fd44922bc058b815b46e627d68f2996e8c38ca6997b6be6f9
Reproduce it yourself — SHA-256 of the certificate's compressed public key:
openssl x509 -in byteapps.crt -pubkey -noout | openssl ec -pubin -conv_form compressed -outform DER | tail -c 33 | shasum -a 256
Contact
ByteApps LLC · Denver, Colorado
contact@byteapps.com