TheCryptoDonkey

Bitcoin, freedom, decentralisation, liberty advocate.

Published Apps

My Signet My Signet is client-side identity for the Signet protocol: verify who you are once, then sign in to sites and services without passwords, emails or accounts. Everything lives encrypted on your device — there is no backend and no key ever leaves the phone. Built for families. Guardians create dependant identities for their kids, pair the apps they use, and approve or deny signing requests as they happen — with an audit trail both sides can see. Autonomy grows in stages as the child does. The Android app adds what the web app structurally can't: fingerprint unlock backed by the hardware Keystore, an always-on NIP-46 bunker that keeps serving signing requests with the screen off, and notifications when a request needs your decision. No Google Play services, no Firebase, no analytics. Built GrapheneOS-first.
Cambium Cambium is an Android NIP-55 signer that holds no user keys. Every signing request is proxied to a paired Heartwood hardware signer over NIP-46 (Nostr relays), and the response is handed straight back to the requesting app. Amethyst, Primal and most other Amber-compatible clients cannot log in to a remote NIP-46 bunker directly, but they all support NIP-55 external signers. Cambium fills that gap: it registers as a signer, but it is not one. No user secrets ever touch the phone. Compromising the phone exposes only the ability to request signatures — which the hardware signer's policy engine and physical confirmation button still gate — never the identity key itself. No Google Play services, no Firebase, no analytics. Runs on any Android 8.1+ device, including GrapheneOS.

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