Payment names: ₿[email protected] via BIP-353 DNS payment instructions

Receiving: a Settings card claims a username, signed with the wallet's
nostr key; the new names registrar (names/server.js, deployed at
names.halwallet.app) enforces first-come ownership by that key and
mirrors the claim into a DNSSEC-signed TXT record at
<name>.user._bitcoin-payment.halwallet.app whose BIP-21 URI carries the
wallet's reusable ark address. The record re-registers itself if the
ark address ever changes, and a collapsible hint shows the single CNAME
a user adds to serve the same name from their own domain (BIP-353
supports delegation when both zones are DNSSEC-signed).

Sending: a pasted name@domain resolves over DNS first — two independent
DoH resolvers must agree and both report the DNSSEC AD flag (full
client-side chain validation is the stated follow-up) — an ark=
instruction pays natively, an on-chain path fills the send form, and a
name with no DNS record falls back to the Lightning-address zap flow.

Co-Authored-By: Claude Fable 5 <[email protected]>

1 files changed, 9 insertions, 0 deletions

diff --git a/src/features/zaps.js b/src/features/zaps.js
index 2667921..71a94af 100644
--- a/src/features/zaps.js
+++ b/src/features/zaps.js
@@ -156,6 +156,15 @@ export function zapsFeature(ctx) {
         onClick: () => begin(target, display),
       }, '⚡ ' + t('lnZapOffer', { addr: display }));
     },
+    // The names feature resolves user@domain over DNS first (BIP-353) and
+    // lands here when the name has no DNS record — the classic LNURL path.
+    lnAddressFallback(text) {
+      if (!canPay() || !ui.send || ui.send.recipients.length !== 1) return false;
+      const target = parseZapTarget(text);
+      if (!target || target.kind === 'npub') return false;
+      begin(target, target.address || String(text).trim());
+      return true;
+    },
     // True when an npub can be zapped over Lightning from this build/wallet —
     // ark's "no Ark address" screen checks this before offering the fallback.
     canLnZap() { return canPay() && !!wallet.nostrProfile; },