The wallet used Minibits only as a Cashu mint, so the node could hold and
swap ecash there but had no addressable name at it. This derives a LUD-16
Lightning address (name@minibits.cash) from the node's own ecash wallet and
surfaces it in the ecash Receive tab above the existing paste-token box.
Identity reuses the NUT-13 ecash phrase, so there is no second secret:
- seedHash = sha256(mnemonic.to_seed("")) — the exact hash the Minibits app
stores, so restoring the same phrase recovers the same address both ways;
- Nostr keys via NIP-06 at m/44'/1237'/0'/0/0 (nostr-sdk Keys::from_mnemonic,
pinned by a unit test against the NIP-06 vector so a bump cannot silently
move the derivation and orphan the profile).
Backend (wallet/minibits.rs) implements the verified live /v3 flow: NIP-42
challenge/verify -> JWT, idempotent /profile registration with collision
retry, and /claim polling that NIP-04-decrypts each token (service pubkey read
from the address's own LUD-16 metadata, constant fallback) and redeems it
through ecash::receive_token. Mainnet-only; state cached 0600 in
wallet/minibits.json.
New RPC: wallet.ecash-lnaddress (register-or-read, idempotent) and
wallet.ecash-lnaddress-claim (sweep Lightning payments into ecash). The modal
fetches the address on tab open, renders QR + copy, and sweeps claims while
open; a registration failure is non-fatal so paste-token still works.
Verified end-to-end against production: registered a disposable
@minibits.cash address, confirmed it resolves via /.well-known/lnurlp, and the
claim poll returns cleanly.
- lnd.createinvoice now returns r_hash_hex; new lnd.invoicestatus RPC
looks the invoice up (SETTLED + amt_paid_sat). E2E-verified on this
box: real invoice minted, status polls settled:false until paid.
- Receive modal: Lightning polls settlement every 3s and flips to the
on-chain-style success view — straight to the green check + amount
(no broadcast step; settlement is final). Raw bolt11 text removed:
QR + CopyButton only. State fully reset per open/close.
- CopyButton is now the wallet's only copy affordance: the ark-address
and ecash-token holdouts swapped in, their ad-hoc handlers deleted.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>