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-rw-r--r--src/wallet.js8
1 files changed, 7 insertions, 1 deletions
diff --git a/src/wallet.js b/src/wallet.js
index 04f303a..21fbcf2 100644
--- a/src/wallet.js
+++ b/src/wallet.js
@@ -17,7 +17,13 @@ import { p2wpkh } from '@scure/btc-signer/payment';
import { Api, pool } from './api.js';
-const GAP_LIMIT = 20; // BIP44 standard gap limit
+// The BIP44 standard gap limit is 20, but that means ~40 address lookups per
+// scan. We can safely use a much smaller limit because this wallet only ever
+// exposes ONE unused receive address at a time (freshReceive = first unused;
+// there is no "generate another address" button). That keeps used addresses
+// contiguous, so the gap between them is never more than 1 — a limit of 5 is a
+// comfortable safety margin while cutting scan requests ~4x.
+const GAP_LIMIT = 5;
const NETS = {
mainnet: { net: btc.NETWORK, coin: 0 },