diff --git a/src/components/AdvancedSettings.tsx b/src/components/AdvancedSettings.tsx
index a5d2e6bd..cc42dcc1 100644
--- a/src/components/AdvancedSettings.tsx
+++ b/src/components/AdvancedSettings.tsx
@@ -20,6 +20,26 @@ const DEFAULT_AI_MODEL = 'google/gemma-4-26b';
 /** Build-time default translation worker URL from the environment variable. */
 const DEFAULT_TRANSLATE_WORKER_URL = import.meta.env.VITE_TRANSLATE_WORKER_URL || '';
 
+/** Hardcoded defaults for the Bitcoin backend fields. Used for reset buttons. */
+const DEFAULT_ESPLORA_APIS = [
+  'https://mempool.emzy.de/api',
+  'https://mempool.space/api',
+  'https://blockstream.info/api',
+];
+const DEFAULT_BLOCKBOOK_BASE_URL = 'https://btc.trezor.io';
+const DEFAULT_BIP352_INDEXER_URL = 'https://silentpayments.dev/blindbit/mainnet';
+
+/** Validate an http(s) URL with no trailing slash. */
+function isValidEndpoint(url: string): boolean {
+  if (!/^https?:\/\//i.test(url)) return false;
+  try {
+    new URL(url);
+    return true;
+  } catch {
+    return false;
+  }
+}
+
 /** The build-time default DSN from the environment variable. */
 const DEFAULT_SENTRY_DSN = import.meta.env.VITE_SENTRY_DSN || '';
 
@@ -31,6 +51,7 @@ export function AdvancedSettings() {
   const [systemOpen, setSystemOpen] = useState(true);
   const [aiOpen, setAiOpen] = useState(false);
   const [sentryOpen, setSentryOpen] = useState(false);
+  const [bitcoinOpen, setBitcoinOpen] = useState(false);
   const [dangerOpen, setDangerOpen] = useState(false);
   const [vanishDialogOpen, setVanishDialogOpen] = useState(false);
   const [statsPubkey, setStatsPubkey] = useState(config.nip85StatsPubkey);
@@ -45,6 +66,15 @@ export function AdvancedSettings() {
   const [showApiKey, setShowApiKey] = useState(false);
   const [systemPromptDraft, setSystemPromptDraft] = useState(config.aiSystemPrompt || DEFAULT_SYSTEM_PROMPT_TEMPLATE);
 
+  // Bitcoin backend drafts. `esploraApis` is an ordered array edited as one URL per line.
+  const [esploraApisDraft, setEsploraApisDraft] = useState(config.esploraApis.join('\n'));
+  const [blockbookDraft, setBlockbookDraft] = useState(config.blockbookBaseUrl);
+  const [bip352Draft, setBip352Draft] = useState(config.bip352IndexerUrl);
+
+  useEffect(() => { setEsploraApisDraft(config.esploraApis.join('\n')); }, [config.esploraApis]);
+  useEffect(() => { setBlockbookDraft(config.blockbookBaseUrl); }, [config.blockbookBaseUrl]);
+  useEffect(() => { setBip352Draft(config.bip352IndexerUrl); }, [config.bip352IndexerUrl]);
+
   useEffect(() => { setBaseUrlDraft(config.aiBaseURL); }, [config.aiBaseURL]);
   useEffect(() => { setApiKeyDraft(config.aiApiKey); }, [config.aiApiKey]);
   useEffect(() => { setModelDraft(config.aiModel); }, [config.aiModel]);
@@ -118,6 +148,67 @@ export function AdvancedSettings() {
     }
   };
 
+  const commitEsploraApis = () => {
+    const urls = esploraApisDraft
+      .split('\n')
+      .map((line) => line.trim().replace(/\/+$/, ''))
+      .filter(Boolean);
+    if (urls.length === 0) {
+      setEsploraApisDraft(DEFAULT_ESPLORA_APIS.join('\n'));
+      updateConfig((current) => ({ ...current, esploraApis: DEFAULT_ESPLORA_APIS }));
+      toast({ title: 'Esplora endpoints reset to defaults' });
+      return;
+    }
+    const invalid = urls.find((url) => !isValidEndpoint(url));
+    if (invalid) {
+      toast({ title: 'Invalid Esplora endpoint', description: invalid, variant: 'destructive' });
+      return;
+    }
+    const changed =
+      urls.length !== config.esploraApis.length ||
+      urls.some((url, i) => url !== config.esploraApis[i]);
+    if (changed) {
+      updateConfig((current) => ({ ...current, esploraApis: urls }));
+      toast({ title: 'Esplora endpoints updated' });
+    }
+    // Normalize the textarea to the cleaned list.
+    setEsploraApisDraft(urls.join('\n'));
+  };
+
+  const commitBlockbook = () => {
+    const trimmed = blockbookDraft.trim().replace(/\/+$/, '');
+    if (!trimmed) {
+      setBlockbookDraft(DEFAULT_BLOCKBOOK_BASE_URL);
+      if (config.blockbookBaseUrl !== DEFAULT_BLOCKBOOK_BASE_URL) {
+        updateConfig((current) => ({ ...current, blockbookBaseUrl: DEFAULT_BLOCKBOOK_BASE_URL }));
+        toast({ title: 'Blockbook URL reset to default' });
+      }
+      return;
+    }
+    if (!isValidEndpoint(trimmed)) {
+      toast({ title: 'Invalid Blockbook URL', variant: 'destructive' });
+      return;
+    }
+    if (trimmed !== config.blockbookBaseUrl) {
+      updateConfig((current) => ({ ...current, blockbookBaseUrl: trimmed }));
+      toast({ title: 'Blockbook URL updated' });
+    }
+    setBlockbookDraft(trimmed);
+  };
+
+  const commitBip352 = () => {
+    const trimmed = bip352Draft.trim().replace(/\/+$/, '');
+    if (trimmed && !isValidEndpoint(trimmed)) {
+      toast({ title: 'Invalid indexer URL', variant: 'destructive' });
+      return;
+    }
+    if (trimmed !== config.bip352IndexerUrl) {
+      updateConfig((current) => ({ ...current, bip352IndexerUrl: trimmed }));
+      toast({ title: trimmed ? 'Silent-payment indexer updated' : 'Silent-payment scanning disabled' });
+    }
+    setBip352Draft(trimmed);
+  };
+
   return (
     <div>
       {/* Agent Section */}
@@ -442,6 +533,143 @@ export function AdvancedSettings() {
         </Collapsible>
       </div>
 
+      {/* Bitcoin Section */}
+      <div>
+        <Collapsible open={bitcoinOpen} onOpenChange={setBitcoinOpen}>
+          <CollapsibleTrigger asChild>
+            <Button
+              variant="ghost"
+              className="relative w-full justify-between px-3 py-3.5 h-auto hover:bg-muted/20 hover:text-foreground rounded-none"
+            >
+              <span className="text-base font-semibold">Bitcoin</span>
+              {bitcoinOpen ? (
+                <ChevronUp className="h-4 w-4 text-muted-foreground" />
+              ) : (
+                <ChevronDown className="h-4 w-4 text-muted-foreground" />
+              )}
+              <div className="absolute bottom-0 left-0 right-0 h-1 bg-primary rounded-full" />
+            </Button>
+          </CollapsibleTrigger>
+          <CollapsibleContent>
+            <div className="px-3 pt-3 pb-4 space-y-5">
+
+              {/* Esplora API endpoints */}
+              <div>
+                <div className="flex items-center justify-between mb-1">
+                  <Label htmlFor="esplora-apis" className="text-sm font-medium">
+                    Esplora API endpoints
+                  </Label>
+                  {esploraApisDraft.trim() !== DEFAULT_ESPLORA_APIS.join('\n') && (
+                    <Button
+                      variant="ghost"
+                      size="sm"
+                      className="h-6 w-6 p-0"
+                      title="Restore to defaults"
+                      onClick={() => {
+                        setEsploraApisDraft(DEFAULT_ESPLORA_APIS.join('\n'));
+                        updateConfig((current) => ({ ...current, esploraApis: DEFAULT_ESPLORA_APIS }));
+                        toast({ title: 'Esplora endpoints reset to defaults' });
+                      }}
+                    >
+                      <RotateCcw className="h-3.5 w-3.5" />
+                    </Button>
+                  )}
+                </div>
+                <p className="text-xs text-muted-foreground mt-1 mb-2">
+                  Esplora-compatible REST roots used for on-chain zaps, donations, and Bitcoin address/tx pages. One URL per line, no trailing slash. Tried in order with failover when an endpoint is rate-limited or down.
+                </p>
+                <Textarea
+                  id="esplora-apis"
+                  value={esploraApisDraft}
+                  onChange={(e) => setEsploraApisDraft(e.target.value)}
+                  onBlur={commitEsploraApis}
+                  placeholder={DEFAULT_ESPLORA_APIS.join('\n')}
+                  className="min-h-[88px] max-h-[200px] resize-y font-mono text-base md:text-sm"
+                  autoComplete="off"
+                  spellCheck={false}
+                />
+              </div>
+
+              {/* Blockbook base URL */}
+              <div>
+                <div className="flex items-center justify-between mb-1">
+                  <Label htmlFor="blockbook-url" className="text-sm font-medium">
+                    Blockbook API URL
+                  </Label>
+                  {blockbookDraft.trim() !== DEFAULT_BLOCKBOOK_BASE_URL && (
+                    <Button
+                      variant="ghost"
+                      size="sm"
+                      className="h-6 w-6 p-0"
+                      title="Restore to default"
+                      onClick={() => {
+                        setBlockbookDraft(DEFAULT_BLOCKBOOK_BASE_URL);
+                        updateConfig((current) => ({ ...current, blockbookBaseUrl: DEFAULT_BLOCKBOOK_BASE_URL }));
+                        toast({ title: 'Blockbook URL reset to default' });
+                      }}
+                    >
+                      <RotateCcw className="h-3.5 w-3.5" />
+                    </Button>
+                  )}
+                </div>
+                <p className="text-xs text-muted-foreground mt-1 mb-2">
+                  Trezor Blockbook instance used by the HD wallet to scan balances and history. <span className="font-medium text-foreground/80">Privacy note:</span> the wallet's full xpub is sent to this server. Self-host for maximum privacy.
+                </p>
+                <Input
+                  id="blockbook-url"
+                  type="url"
+                  value={blockbookDraft}
+                  onChange={(e) => setBlockbookDraft(e.target.value)}
+                  onBlur={commitBlockbook}
+                  placeholder={DEFAULT_BLOCKBOOK_BASE_URL}
+                  className="font-mono text-base md:text-sm"
+                  autoComplete="off"
+                  spellCheck={false}
+                />
+              </div>
+
+              {/* BIP-352 silent payment indexer */}
+              <div>
+                <div className="flex items-center justify-between mb-1">
+                  <Label htmlFor="bip352-url" className="text-sm font-medium">
+                    Silent payment indexer
+                  </Label>
+                  {bip352Draft.trim() !== DEFAULT_BIP352_INDEXER_URL && (
+                    <Button
+                      variant="ghost"
+                      size="sm"
+                      className="h-6 w-6 p-0"
+                      title="Restore to default"
+                      onClick={() => {
+                        setBip352Draft(DEFAULT_BIP352_INDEXER_URL);
+                        updateConfig((current) => ({ ...current, bip352IndexerUrl: DEFAULT_BIP352_INDEXER_URL }));
+                        toast({ title: 'Silent-payment indexer reset to default' });
+                      }}
+                    >
+                      <RotateCcw className="h-3.5 w-3.5" />
+                    </Button>
+                  )}
+                </div>
+                <p className="text-xs text-muted-foreground mt-1 mb-2">
+                  BIP-352 tweak-data indexer (BlindBit Oracle) used to detect incoming silent payments (<code className="bg-muted px-1 rounded">sp1…</code>). Your scan key never leaves the device. Leave empty to disable silent-payment scanning.
+                </p>
+                <Input
+                  id="bip352-url"
+                  type="url"
+                  value={bip352Draft}
+                  onChange={(e) => setBip352Draft(e.target.value)}
+                  onBlur={commitBip352}
+                  placeholder={DEFAULT_BIP352_INDEXER_URL}
+                  className="font-mono text-base md:text-sm"
+                  autoComplete="off"
+                  spellCheck={false}
+                />
+              </div>
+            </div>
+          </CollapsibleContent>
+        </Collapsible>
+      </div>
+
       {/* Error Reporting Section */}
       <div>
         <Collapsible open={sentryOpen} onOpenChange={setSentryOpen}>