composeApp/src/androidMain/kotlin/su/reya/coop/screens/ProfileScreen.kt

@@ -27,16 +27,19 @@ import androidx.compose.material3.Text
 import androidx.compose.material3.TopAppBarDefaults
 import androidx.compose.material3.toShape
 import androidx.compose.runtime.Composable
-import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.unit.dp
+import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import coop.composeapp.generated.resources.Res
 import coop.composeapp.generated.resources.ic_arrow_back
 import coop.composeapp.generated.resources.ic_chat
@@ -44,6 +47,7 @@ import coop.composeapp.generated.resources.ic_share
 import kotlinx.coroutines.launch
 import org.jetbrains.compose.resources.painterResource
 import rust.nostr.sdk.PublicKey
+import rust.nostr.sdk.Timestamp
 import su.reya.coop.LocalNavigator
 import su.reya.coop.LocalNostrViewModel
 import su.reya.coop.LocalSnackbarHostState
@@ -64,9 +68,9 @@ fun ProfileScreen(pubkey: String, screening: Boolean = false) {
     val pubkey = runCatching { PublicKey.parse(pubkey) }.getOrNull() ?: return
 
     val metadataFlow = remember(pubkey) { viewModel.getMetadata(pubkey) }
-    val metadata by metadataFlow.collectAsState(initial = null)
-    val profile = metadata?.asRecord()
+    val metadata by metadataFlow.collectAsStateWithLifecycle()
 
+    val profile = metadata?.asRecord()
     val displayName = profile?.displayName ?: profile?.name ?: "No name"
     val nip05 = profile?.nip05 ?: pubkey.short()
     val picture = profile?.picture
@@ -79,6 +83,22 @@ fun ProfileScreen(pubkey: String, screening: Boolean = false) {
         )
     }
 
+    var addressVerified by remember { mutableStateOf(false) }
+    var lastActivity by remember { mutableStateOf<Timestamp?>(null) }
+
+    LaunchedEffect(screening) {
+        if (screening) {
+            scope.launch {
+                // Verify NIP-05 address if present
+                profile?.nip05?.let { it ->
+                    viewModel.verifyAddress(pubkey, it).let { addressVerified = it }
+                }
+                // Get the last activity
+                viewModel.verifyActivity(pubkey)?.let { lastActivity = it }
+            }
+        }
+    }
+
     Scaffold(
         containerColor = MaterialTheme.colorScheme.surfaceContainer,
         snackbarHost = { SnackbarHost(snackbarHostState) },

shared/src/commonMain/kotlin/su/reya/coop/Nostr.kt

@@ -947,4 +947,34 @@ class Nostr {
             throw IllegalStateException("Failed to search nostr: ${e.message}", e)
         }
     }
+
+    suspend fun verifyAddress(pubkey: PublicKey, address: String): Boolean {
+        try {
+            val address = Nip05Address.parse(address)
+            val profile = profileFromAddress(HttpClient(), address)
+
+            return profile.publicKey() == pubkey
+        } catch (e: Exception) {
+            throw IllegalStateException("Failed to verify address: ${e.message}", e)
+        }
+    }
+
+    suspend fun verifyActivity(pubkey: PublicKey): Timestamp? {
+        try {
+            val filter = Filter().author(pubkey).limit(3u)
+            val target = mutableMapOf<RelayUrl, List<Filter>>()
+            NostrManager.BOOTSTRAP_RELAYS.forEach { relay ->
+                target[RelayUrl.parse(relay)] = listOf(filter)
+            }
+
+            val events = client?.fetchEvents(
+                target = ReqTarget.manual(target),
+                timeout = Duration.parse("3s")
+            )
+
+            return events?.first()?.createdAt()
+        } catch (e: Exception) {
+            throw IllegalStateException("Failed to get latest activity: ${e.message}", e)
+        }
+    }
 }

shared/src/commonMain/kotlin/su/reya/coop/NostrViewModel.kt

@@ -35,6 +35,7 @@ import rust.nostr.sdk.PublicKey
 import rust.nostr.sdk.RelayMetadata
 import rust.nostr.sdk.RelayUrl
 import rust.nostr.sdk.Tag
+import rust.nostr.sdk.Timestamp
 import rust.nostr.sdk.UnsignedEvent
 import su.reya.coop.blossom.BlossomClient
 import su.reya.coop.storage.SecretStorage
@@ -820,6 +821,24 @@ class NostrViewModel(
         }
         return emptyList()
     }
+
+    suspend fun verifyAddress(pubkey: PublicKey, address: String): Boolean {
+        return try {
+            nostr.verifyAddress(pubkey, address)
+        } catch (e: Exception) {
+            showError("Error: ${e.message}")
+            false
+        }
+    }
+
+    suspend fun verifyActivity(pubkey: PublicKey): Timestamp? {
+        return try {
+            nostr.verifyActivity(pubkey)
+        } catch (e: Exception) {
+            showError("Error: ${e.message}")
+            null
+        }
+    }
 }
 
 fun PublicKey.short(): String {