feat(nostr): NIP-05 verification badge with 24h cache (M11.6)

Verify NIP-05 identifiers by fetching .well-known/nostr.json from the domain. Results cached in localStorage for 24 hours. Green checkmark badge shown next to verified NIP-05 on note cards. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-04 00:23:52 +00:00
parent 8ff3d1298e
commit 49c9f71aa2
2 changed files with 103 additions and 2 deletions
@@ -0,0 +1,76 @@
+import { ref } from 'vue'
+
+interface CacheEntry {
+  verified: boolean
+  pubkey: string
+  timestamp: number
+}
+
+const CACHE_TTL = 24 * 60 * 60 * 1000 // 24 hours
+const STORAGE_KEY = 'aiui-nip05-cache'
+
+const verificationCache = ref<Map<string, CacheEntry>>(new Map())
+
+function loadCache() {
+  try {
+    const stored = localStorage.getItem(STORAGE_KEY)
+    if (stored) {
+      const entries = JSON.parse(stored) as [string, CacheEntry][]
+      const now = Date.now()
+      const valid = entries.filter(([, e]) => now - e.timestamp < CACHE_TTL)
+      verificationCache.value = new Map(valid)
+    }
+  } catch { /* ignore */ }
+}
+
+function saveCache() {
+  try {
+    const entries = Array.from(verificationCache.value.entries())
+    localStorage.setItem(STORAGE_KEY, JSON.stringify(entries))
+  } catch { /* ignore */ }
+}
+
+loadCache()
+
+export function useNip05Verification() {
+  async function verifyNip05(nip05: string, expectedPubkey: string): Promise<boolean> {
+    const cacheKey = `${nip05}:${expectedPubkey}`
+    const cached = verificationCache.value.get(cacheKey)
+    if (cached && Date.now() - cached.timestamp < CACHE_TTL) {
+      return cached.verified
+    }
+
+    try {
+      const [name, domain] = nip05.split('@')
+      if (!name || !domain) return false
+
+      const res = await fetch(`https://${domain}/.well-known/nostr.json?name=${encodeURIComponent(name)}`)
+      if (!res.ok) return cacheResult(cacheKey, false, expectedPubkey)
+
+      const data = await res.json()
+      const pubkey = data?.names?.[name]
+      const verified = pubkey === expectedPubkey
+
+      return cacheResult(cacheKey, verified, expectedPubkey)
+    } catch {
+      return cacheResult(cacheKey, false, expectedPubkey)
+    }
+  }
+
+  function cacheResult(key: string, verified: boolean, pubkey: string): boolean {
+    verificationCache.value.set(key, { verified, pubkey, timestamp: Date.now() })
+    saveCache()
+    return verified
+  }
+
+  function isVerified(nip05: string, pubkey: string): boolean | null {
+    const cached = verificationCache.value.get(`${nip05}:${pubkey}`)
+    if (!cached || Date.now() - cached.timestamp >= CACHE_TTL) return null
+    return cached.verified
+  }
+
+  return {
+    verifyNip05,
+    isVerified,
+  }
+}