Verify nip05 address, display status

nostr.ts

@@ -113,3 +113,25 @@ export async function replaceNostrUris(markdown: string): Promise<string> {
 
   return markdown;
 }
+
+export async function verifyNip05Address(
+  address: string,
+  pubkey: string,
+): Promise<boolean> {
+  const [username, host] = address.split("@");
+  const url = `https://${host}/.well-known/nostr.json?name=${username}`;
+
+  try {
+    const res = await fetch(url);
+    if (res.status === 404 || !res.ok) return false;
+    const data = await res.json();
+
+    if (data.names && data.names[username] === pubkey) {
+      return true;
+    } else {
+      return false;
+    }
+  } catch (_e) {
+    return false;
+  }
+}