fix(p2pk): show error border on nsec input in all focus states

feat(p2pk): implement P2PK token locking (send)

lib/l10n/app_de.arb

@@ -487,6 +487,7 @@
   "cameraPermissionDenied": "Kamera-Berechtigung verweigert",
   "paymentRequestNotSupported": "Zahlungsanfragen werden noch nicht unterstützt",
   "p2pkTitle": "P2PK-Schlüssel",
+  "p2pkSettingsDescription": "Gesperrtes ecash empfangen",
   "p2pkExperimental": "P2PK ist experimentell. Mit Vorsicht verwenden.",
   "p2pkExperimentalShort": "Experimentell",
   "p2pkPrimaryKey": "Primärschlüssel",

lib/l10n/app_en.arb

@@ -368,6 +368,7 @@
   "paymentRequestNotSupported": "Payment requests are not yet supported",
 
   "p2pkTitle": "P2PK Keys",
+  "p2pkSettingsDescription": "Receive locked ecash",
   "p2pkExperimental": "P2PK is experimental. Use with caution.",
   "p2pkExperimentalShort": "Experimental",
   "p2pkPrimaryKey": "Primary Key",

lib/l10n/app_es.arb

@@ -488,6 +488,7 @@
   "paymentRequestNotSupported": "Los payment requests aún no están soportados",
 
   "p2pkTitle": "Claves P2PK",
+  "p2pkSettingsDescription": "Recibir ecash bloqueado",
   "p2pkExperimental": "P2PK es experimental. Úsala con precaución.",
   "p2pkExperimentalShort": "Experimental",
   "p2pkPrimaryKey": "Clave Principal",

lib/l10n/app_fr.arb

@@ -487,6 +487,7 @@
   "cameraPermissionDenied": "Permission de la caméra refusée",
   "paymentRequestNotSupported": "Les demandes de paiement ne sont pas encore prises en charge",
   "p2pkTitle": "Clés P2PK",
+  "p2pkSettingsDescription": "Recevoir ecash verrouillé",
   "p2pkExperimental": "P2PK est expérimental. Utiliser avec prudence.",
   "p2pkExperimentalShort": "Expérimental",
   "p2pkPrimaryKey": "Clé Principale",

lib/l10n/app_it.arb

@@ -487,6 +487,7 @@
   "cameraPermissionDenied": "Permesso fotocamera negato",
   "paymentRequestNotSupported": "Le richieste di pagamento non sono ancora supportate",
   "p2pkTitle": "Chiavi P2PK",
+  "p2pkSettingsDescription": "Ricevi ecash bloccato",
   "p2pkExperimental": "P2PK è sperimentale. Usare con cautela.",
   "p2pkExperimentalShort": "Sperimentale",
   "p2pkPrimaryKey": "Chiave Principale",

lib/l10n/app_ja.arb

@@ -487,6 +487,7 @@
   "cameraPermissionDenied": "カメラの許可が拒否されました",
   "paymentRequestNotSupported": "支払いリクエストはまだサポートされていません",
   "p2pkTitle": "P2PK鍵",
+  "p2pkSettingsDescription": "ロックされたecashを受け取る",
   "p2pkExperimental": "P2PKは実験的機能です。注意してご使用ください。",
   "p2pkExperimentalShort": "実験的",
   "p2pkPrimaryKey": "プライマリ鍵",

lib/l10n/app_ko.arb

@@ -487,6 +487,7 @@
   "cameraPermissionDenied": "카메라 권한이 거부되었습니다",
   "paymentRequestNotSupported": "결제 요청은 아직 지원되지 않습니다",
   "p2pkTitle": "P2PK 키",
+  "p2pkSettingsDescription": "잠긴 ecash 받기",
   "p2pkExperimental": "P2PK는 실험적 기능입니다. 주의하여 사용하세요.",
   "p2pkExperimentalShort": "실험적",
   "p2pkPrimaryKey": "기본 키",

lib/l10n/app_pt.arb

@@ -487,6 +487,7 @@
   "cameraPermissionDenied": "Permissão de câmera negada",
   "paymentRequestNotSupported": "Solicitações de pagamento ainda não são suportadas",
   "p2pkTitle": "Chaves P2PK",
+  "p2pkSettingsDescription": "Receber ecash bloqueado",
   "p2pkExperimental": "P2PK é experimental. Use com cautela.",
   "p2pkExperimentalShort": "Experimental",
   "p2pkPrimaryKey": "Chave Principal",

lib/l10n/app_ru.arb

@@ -487,6 +487,7 @@
   "cameraPermissionDenied": "Доступ к камере запрещён",
   "paymentRequestNotSupported": "Запросы на оплату пока не поддерживаются",
   "p2pkTitle": "Ключи P2PK",
+  "p2pkSettingsDescription": "Получить заблокированный ecash",
   "p2pkExperimental": "P2PK экспериментальный. Используйте с осторожностью.",
   "p2pkExperimentalShort": "Экспериментальный",
   "p2pkPrimaryKey": "Основной ключ",

lib/l10n/app_sw.arb

@@ -487,6 +487,7 @@
   "cameraPermissionDenied": "Ruhusa ya kamera imekataliwa",
   "paymentRequestNotSupported": "Maombi ya malipo bado hayatumiki",
   "p2pkTitle": "Funguo za P2PK",
+  "p2pkSettingsDescription": "Pokea ecash iliyofungwa",
   "p2pkExperimental": "P2PK ni ya majaribio. Tumia kwa uangalifu.",
   "p2pkExperimentalShort": "Majaribio",
   "p2pkPrimaryKey": "Ufunguo Mkuu",

lib/l10n/app_zh.arb

@@ -487,6 +487,7 @@
   "cameraPermissionDenied": "相机权限被拒绝",
   "paymentRequestNotSupported": "付款请求尚不支持",
   "p2pkTitle": "P2PK密钥",
+  "p2pkSettingsDescription": "接收锁定的ecash",
   "p2pkExperimental": "P2PK是实验性功能。请谨慎使用。",
   "p2pkExperimentalShort": "实验性",
   "p2pkPrimaryKey": "主密钥",

lib/providers/wallet_provider.dart

@@ -784,8 +784,9 @@ class WalletProvider extends ChangeNotifier {
   /// Reclama un token Cashu detectando automáticamente su unidad.
   /// Si el mint del token es diferente al activo, lo agrega.
   /// NO cambia la unidad activa (comportamiento similar a cashu.me).
+  /// Si el token es P2PK, pasar la clave privada en p2pkPrivateKey.
   /// Retorna monto recibido.
-  Future<BigInt> receiveToken(String encodedToken) async {
+  Future<BigInt> receiveToken(String encodedToken, {String? p2pkPrivateKey}) async {
     // Parsear token (incluye detección de unidad)
     final tokenInfo = parseToken(encodedToken);
     if (tokenInfo == null) {
@@ -802,13 +803,13 @@ class WalletProvider extends ChangeNotifier {
       // Intentar detectar unidad de nuevo ahora que tenemos keysets
       final detectedUnit = detectTokenUnit(encodedToken);
       if (detectedUnit != null) {
-        return await _receiveWithUnit(encodedToken, tokenMint, detectedUnit);
+        return await _receiveWithUnit(encodedToken, tokenMint, detectedUnit, p2pkPrivateKey);
       }
     }
 
     // Si tenemos unidad detectada, usarla
     if (tokenInfo.unit != null) {
-      return await _receiveWithUnit(encodedToken, tokenMint, tokenInfo.unit!);
+      return await _receiveWithUnit(encodedToken, tokenMint, tokenInfo.unit!, p2pkPrivateKey);
     }
 
     // Fallback: intentar con cada unidad del mint hasta que funcione
@@ -817,7 +818,7 @@ class WalletProvider extends ChangeNotifier {
 
     for (final unit in units) {
       try {
-        return await _receiveWithUnit(encodedToken, tokenMint, unit);
+        return await _receiveWithUnit(encodedToken, tokenMint, unit, p2pkPrivateKey);
       } catch (e) {
         lastError = e as Exception;
         debugPrint('Receive falló con unidad $unit: $e');
@@ -835,10 +836,17 @@ class WalletProvider extends ChangeNotifier {
     String encodedToken,
     String mintUrl,
     String unit,
+    String? p2pkPrivateKey,
   ) async {
     final wallet = await getWallet(mintUrl, unit);
     final token = Token.parse(encoded: encodedToken);
-    final amount = await wallet.receive(token: token);
+
+    // Si hay clave P2PK, usarla para desbloquear el token
+    final opts = p2pkPrivateKey != null
+        ? ReceiveOptions(signingKeys: [p2pkPrivateKey])
+        : null;
+
+    final amount = await wallet.receive(token: token, opts: opts);
 
     // Guardar metadata para la transacción recién creada
     await _saveMetaForRecentReceive(wallet, encodedToken);
@@ -873,6 +881,7 @@ class WalletProvider extends ChangeNotifier {
   }
 
   /// Reclama un token P2PK (bloqueado a una clave pública).
+  /// Usa la unidad del token automáticamente (no requiere cambiar unidad activa).
   Future<BigInt> receiveP2pkToken(
     String encodedToken,
     List<String> signingKeys,
@@ -882,20 +891,14 @@ class WalletProvider extends ChangeNotifier {
       throw Exception('Token inválido');
     }
 
-    // Cambiar al mint del token
+    // Agregar mint si no existe
     if (!_mintUnits.containsKey(tokenInfo.mintUrl)) {
       await addMint(tokenInfo.mintUrl);
     }
 
-    _activeMintUrl = tokenInfo.mintUrl;
-
-    // Verificar si la unidad activa es soportada
-    final units = _mintUnits[tokenInfo.mintUrl]!;
-    if (!units.contains(_activeUnit)) {
-      _activeUnit = units.first;
-    }
-
-    final wallet = await getWallet(tokenInfo.mintUrl, _activeUnit);
+    // Usar la unidad del token (fallback a 'sat' si no especificada)
+    final tokenUnit = tokenInfo.unit ?? 'sat';
+    final wallet = await getWallet(tokenInfo.mintUrl, tokenUnit);
     final token = Token.parse(encoded: encodedToken);
 
     final amount = await wallet.receive(
@@ -994,6 +997,8 @@ class WalletProvider extends ChangeNotifier {
   }
 
   /// Envía tokens P2PK.
+  /// NOTA: Bug conocido en CDK - solo funciona el primer envío después de iniciar la app.
+  /// Ver project_context/P2PK_SEND_BUG.md
   Future<String> sendTokensP2pk(
     BigInt amount,
     String pubkey,

lib/screens/4_receive/receive_screen.dart

@@ -7,11 +7,13 @@ import '../../core/constants/colors.dart';
 import '../../core/constants/dimensions.dart';
 import '../../core/utils/formatters.dart';
 import '../../core/utils/incoming_data_parser.dart' hide TokenInfo;
+import '../../core/utils/nostr_utils.dart';
 import '../../widgets/common/gradient_background.dart';
 import '../../widgets/common/glass_card.dart';
 import '../../widgets/common/primary_button.dart';
 import '../../widgets/effects/cashu_confetti.dart';
 import '../../providers/wallet_provider.dart';
+import '../../providers/p2pk_provider.dart';
 import '../10_scanner/scan_screen.dart';
 
 /// Pantalla para recibir tokens Cashu
@@ -38,6 +40,15 @@ class _ReceiveScreenState extends State<ReceiveScreen> {
   TokenInfo? _tokenInfo;
   String? _errorMessage;
 
+  // Estado P2PK
+  bool _isP2PKLocked = false;
+  bool _isLockedToUs = false;
+  String? _lockedToPubkeyHex;
+  String? _matchingKeyLabel; // Label de nuestra clave si coincide
+  final TextEditingController _manualKeyController = TextEditingController();
+  bool _showManualKey = false; // Toggle para mostrar/ocultar nsec
+  String? _manualKeyError;
+
   @override
   void initState() {
     super.initState();
@@ -53,6 +64,7 @@ class _ReceiveScreenState extends State<ReceiveScreen> {
   @override
   void dispose() {
     _tokenController.dispose();
+    _manualKeyController.dispose();
     _confettiController.dispose();
     super.dispose();
   }
@@ -124,6 +136,12 @@ class _ReceiveScreenState extends State<ReceiveScreen> {
                 // Preview del token (si es válido)
                 if (_isValidToken && _tokenInfo != null) _buildTokenPreview(),
 
+                // Indicador P2PK (si el token está bloqueado)
+                if (_isValidToken && _isP2PKLocked) ...[
+                  const SizedBox(height: AppDimensions.paddingMedium),
+                  _buildP2PKIndicator(),
+                ],
+
                 // Mensaje de error (si hay)
                 if (_errorMessage != null) _buildErrorMessage(),
               ],
@@ -457,12 +475,312 @@ class _ReceiveScreenState extends State<ReceiveScreen> {
     );
   }
 
+  /// Widget que muestra el estado P2PK del token
+  Widget _buildP2PKIndicator() {
+    final l10n = L10n.of(context)!;
+
+    // Convertir pubkey hex a npub para mostrar
+    String? npubDisplay;
+    if (_lockedToPubkeyHex != null) {
+      try {
+        npubDisplay = NostrUtils.hexToNpub(_lockedToPubkeyHex!);
+      } catch (_) {
+        npubDisplay = _lockedToPubkeyHex; // Fallback a hex si falla conversión
+      }
+    }
+
+    // Truncar npub para display: npub1abc...xyz
+    String truncatedNpub = '';
+    if (npubDisplay != null && npubDisplay.length > 20) {
+      truncatedNpub = '${npubDisplay.substring(0, 12)}...${npubDisplay.substring(npubDisplay.length - 6)}';
+    } else {
+      truncatedNpub = npubDisplay ?? '';
+    }
+
+    return GlassCard(
+      padding: const EdgeInsets.all(AppDimensions.paddingMedium),
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          // Encabezado con icono y estado
+          Row(
+            children: [
+              Container(
+                padding: const EdgeInsets.all(8),
+                decoration: BoxDecoration(
+                  color: _isLockedToUs
+                      ? AppColors.success.withValues(alpha: 0.2)
+                      : AppColors.warning.withValues(alpha: 0.2),
+                  shape: BoxShape.circle,
+                ),
+                child: Icon(
+                  _isLockedToUs ? LucideIcons.unlock : LucideIcons.lock,
+                  color: _isLockedToUs ? AppColors.success : AppColors.warning,
+                  size: 20,
+                ),
+              ),
+              const SizedBox(width: 12),
+              Expanded(
+                child: Column(
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  children: [
+                    Text(
+                      _isLockedToUs ? l10n.p2pkLockedToYou : l10n.p2pkLockedToOther,
+                      style: TextStyle(
+                        fontFamily: 'Inter',
+                        fontSize: 14,
+                        fontWeight: FontWeight.w600,
+                        color: _isLockedToUs ? AppColors.success : AppColors.warning,
+                      ),
+                    ),
+                    if (_isLockedToUs && _matchingKeyLabel != null)
+                      Text(
+                        _matchingKeyLabel!,
+                        style: TextStyle(
+                          fontFamily: 'Inter',
+                          fontSize: 12,
+                          color: AppColors.textSecondary,
+                        ),
+                      ),
+                  ],
+                ),
+              ),
+              // Badge experimental
+              Container(
+                padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 4),
+                decoration: BoxDecoration(
+                  color: AppColors.warning.withValues(alpha: 0.2),
+                  borderRadius: BorderRadius.circular(8),
+                ),
+                child: Row(
+                  mainAxisSize: MainAxisSize.min,
+                  children: [
+                    Icon(
+                      LucideIcons.flaskConical,
+                      size: 12,
+                      color: AppColors.warning,
+                    ),
+                    const SizedBox(width: 4),
+                    Text(
+                      l10n.p2pkExperimentalShort,
+                      style: TextStyle(
+                        fontFamily: 'Inter',
+                        fontSize: 10,
+                        fontWeight: FontWeight.w500,
+                        color: AppColors.warning,
+                      ),
+                    ),
+                  ],
+                ),
+              ),
+            ],
+          ),
+
+          const SizedBox(height: 12),
+
+          // Pubkey (npub truncado) - tap para copiar
+          GestureDetector(
+            onTap: () {
+              if (npubDisplay != null) {
+                Clipboard.setData(ClipboardData(text: npubDisplay));
+                ScaffoldMessenger.of(context).showSnackBar(
+                  SnackBar(
+                    content: Text(l10n.copied('npub')),
+                    duration: const Duration(seconds: 2),
+                    backgroundColor: AppColors.success,
+                  ),
+                );
+              }
+            },
+            child: Container(
+              padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 8),
+              decoration: BoxDecoration(
+                color: Colors.white.withValues(alpha: 0.05),
+                borderRadius: BorderRadius.circular(8),
+                border: Border.all(
+                  color: Colors.white.withValues(alpha: 0.1),
+                ),
+              ),
+              child: Row(
+                children: [
+                  Expanded(
+                    child: Text(
+                      truncatedNpub,
+                      style: TextStyle(
+                        fontFamily: 'monospace',
+                        fontSize: 12,
+                        color: AppColors.textSecondary,
+                      ),
+                    ),
+                  ),
+                  Icon(
+                    LucideIcons.copy,
+                    size: 14,
+                    color: AppColors.textSecondary.withValues(alpha: 0.7),
+                  ),
+                ],
+              ),
+            ),
+          ),
+
+          // Campo nsec manual (solo si NO es nuestra clave)
+          if (!_isLockedToUs) ...[
+            const SizedBox(height: 16),
+
+            // Mensaje de error si no puede desbloquear
+            Container(
+              padding: const EdgeInsets.all(12),
+              decoration: BoxDecoration(
+                color: AppColors.error.withValues(alpha: 0.1),
+                borderRadius: BorderRadius.circular(8),
+                border: Border.all(
+                  color: AppColors.error.withValues(alpha: 0.2),
+                ),
+              ),
+              child: Row(
+                children: [
+                  Icon(
+                    LucideIcons.alertTriangle,
+                    size: 16,
+                    color: AppColors.error,
+                  ),
+                  const SizedBox(width: 8),
+                  Expanded(
+                    child: Text(
+                      l10n.p2pkCannotUnlock,
+                      style: TextStyle(
+                        fontFamily: 'Inter',
+                        fontSize: 12,
+                        color: AppColors.error,
+                      ),
+                    ),
+                  ),
+                ],
+              ),
+            ),
+
+            const SizedBox(height: 12),
+
+            // Campo para ingresar nsec manualmente
+            Text(
+              l10n.p2pkEnterPrivateKey,
+              style: TextStyle(
+                fontFamily: 'Inter',
+                fontSize: 14,
+                fontWeight: FontWeight.w500,
+                color: AppColors.textSecondary,
+              ),
+            ),
+            const SizedBox(height: 8),
+
+            Container(
+              decoration: BoxDecoration(
+                color: Colors.white.withValues(alpha: 0.05),
+                borderRadius: BorderRadius.circular(12),
+                border: Border.all(
+                  color: _manualKeyError != null
+                      ? AppColors.error.withValues(alpha: 0.5)
+                      : Colors.white.withValues(alpha: 0.1),
+                ),
+              ),
+              child: Row(
+                children: [
+                  Expanded(
+                    child: TextField(
+                      controller: _manualKeyController,
+                      obscureText: !_showManualKey,
+                      style: const TextStyle(
+                        fontFamily: 'monospace',
+                        fontSize: 14,
+                        color: Colors.white,
+                      ),
+                      decoration: InputDecoration(
+                        hintText: 'nsec1... o hex',
+                        hintStyle: TextStyle(
+                          fontFamily: 'monospace',
+                          fontSize: 14,
+                          color: Colors.white.withValues(alpha: 0.3),
+                        ),
+                        border: InputBorder.none,
+                        contentPadding: const EdgeInsets.symmetric(
+                          horizontal: 12,
+                          vertical: 14,
+                        ),
+                      ),
+                      onChanged: (_) {
+                        setState(() {
+                          _manualKeyError = null;
+                        });
+                      },
+                    ),
+                  ),
+                  // Botón mostrar/ocultar
+                  IconButton(
+                    icon: Icon(
+                      _showManualKey ? LucideIcons.eyeOff : LucideIcons.eye,
+                      color: AppColors.textSecondary,
+                      size: 20,
+                    ),
+                    onPressed: () {
+                      setState(() {
+                        _showManualKey = !_showManualKey;
+                      });
+                    },
+                  ),
+                  // Botón pegar
+                  IconButton(
+                    icon: Icon(
+                      LucideIcons.clipboard,
+                      color: AppColors.textSecondary,
+                      size: 20,
+                    ),
+                    onPressed: () async {
+                      final clipboardData = await Clipboard.getData(Clipboard.kTextPlain);
+                      if (clipboardData?.text != null) {
+                        _manualKeyController.text = clipboardData!.text!.trim();
+                        setState(() {
+                          _manualKeyError = null;
+                        });
+                      }
+                    },
+                  ),
+                ],
+              ),
+            ),
+
+            // Error de clave manual
+            if (_manualKeyError != null) ...[
+              const SizedBox(height: 8),
+              Text(
+                _manualKeyError!,
+                style: TextStyle(
+                  fontFamily: 'Inter',
+                  fontSize: 12,
+                  color: AppColors.error,
+                ),
+              ),
+            ],
+          ],
+        ],
+      ),
+    );
+  }
+
   Widget _buildReceiveButton() {
     final l10n = L10n.of(context)!;
-    // Botón único "Recibir" - auto-detecta conectividad
+
+    // Determinar si el botón debe estar habilitado
+    bool canReceive = _isValidToken && !_isProcessing;
+
+    // Si es P2PK y NO es nuestra clave, necesita nsec manual válido
+    if (_isP2PKLocked && !_isLockedToUs) {
+      final manualKey = _manualKeyController.text.trim();
+      canReceive = canReceive && manualKey.isNotEmpty;
+    }
+
     return PrimaryButton(
       text: _isProcessing ? l10n.claiming : l10n.receive,
-      onPressed: _isValidToken && !_isProcessing ? _receiveToken : null,
+      onPressed: canReceive ? _receiveToken : null,
     );
   }
 
@@ -476,9 +794,17 @@ class _ReceiveScreenState extends State<ReceiveScreen> {
 
   void _onTokenChanged(String value) {
     final walletProvider = context.read<WalletProvider>();
+    final p2pkProvider = context.read<P2PKProvider>();
 
     setState(() {
       _errorMessage = null;
+      _manualKeyError = null;
+
+      // Reset P2PK state
+      _isP2PKLocked = false;
+      _isLockedToUs = false;
+      _lockedToPubkeyHex = null;
+      _matchingKeyLabel = null;
 
       if (value.isEmpty) {
         _isValidToken = false;
@@ -492,6 +818,18 @@ class _ReceiveScreenState extends State<ReceiveScreen> {
       if (tokenInfo != null) {
         _isValidToken = true;
         _tokenInfo = tokenInfo;
+
+        // Detectar P2PK
+        _isP2PKLocked = p2pkProvider.isTokenLocked(value.trim());
+        if (_isP2PKLocked) {
+          _lockedToPubkeyHex = p2pkProvider.extractLockedPubkey(value.trim());
+          _isLockedToUs = p2pkProvider.isTokenLockedToUs(value.trim());
+
+          // Si es nuestra, buscar el label de la clave
+          if (_isLockedToUs && _lockedToPubkeyHex != null) {
+            _matchingKeyLabel = _findMatchingKeyLabel(p2pkProvider);
+          }
+        }
       } else {
         _isValidToken = false;
         _tokenInfo = null;
@@ -500,6 +838,31 @@ class _ReceiveScreenState extends State<ReceiveScreen> {
     });
   }
 
+  /// Busca el label de la clave que coincide con el token P2PK
+  String? _findMatchingKeyLabel(P2PKProvider p2pkProvider) {
+    if (_lockedToPubkeyHex == null) return null;
+
+    // Normalizar a x-only para comparar
+    final lockedNormalized = _normalizeToXOnly(_lockedToPubkeyHex!);
+
+    for (final key in p2pkProvider.keys) {
+      final keyNormalized = _normalizeToXOnly(key.publicKey);
+      if (keyNormalized == lockedNormalized) {
+        return key.label;
+      }
+    }
+    return null;
+  }
+
+  /// Normaliza pubkey a x-only (64 chars) quitando prefijo SEC1 si existe
+  String _normalizeToXOnly(String pubkey) {
+    final lower = pubkey.toLowerCase();
+    if (lower.length == 66 && (lower.startsWith('02') || lower.startsWith('03'))) {
+      return lower.substring(2);
+    }
+    return lower;
+  }
+
   /// Método principal: recibe token con detección automática de conectividad.
   /// 1. Si el mint es desconocido y no hay conexión → rechazar
   /// 2. Ping al mint (3s) → si OK → claim → si falla → guardar pendiente
@@ -605,15 +968,56 @@ class _ReceiveScreenState extends State<ReceiveScreen> {
   /// Reclama el token directamente (cuando hay conexión).
   Future<void> _claimToken() async {
     final walletProvider = context.read<WalletProvider>();
+    final p2pkProvider = context.read<P2PKProvider>();
+    final l10n = L10n.of(context)!;
 
     // Guardar unidad detectada del token ANTES de reclamar
     final detectedUnit = _tokenInfo?.unit ?? walletProvider.activeUnit;
+    final token = _tokenController.text.trim();
 
     try {
-      // Reclamar token (usa unidad detectada internamente)
-      final amountReceived = await walletProvider.receiveToken(
-        _tokenController.text.trim(),
-      );
+      BigInt amountReceived;
+
+      if (_isP2PKLocked) {
+        // Token P2PK - necesita clave privada para desbloquear
+        String? privateKeyHex;
+
+        if (_isLockedToUs) {
+          // Es nuestra clave - obtener automáticamente
+          privateKeyHex = p2pkProvider.getPrivateKeyForToken(token);
+          if (privateKeyHex == null) {
+            throw Exception(l10n.p2pkCannotUnlock);
+          }
+        } else {
+          // No es nuestra - usar clave manual
+          final manualInput = _manualKeyController.text.trim();
+
+          // Intentar convertir nsec a hex
+          if (manualInput.startsWith('nsec1')) {
+            privateKeyHex = NostrUtils.nsecToHex(manualInput);
+          } else if (RegExp(r'^[0-9a-fA-F]{64}$').hasMatch(manualInput)) {
+            // Ya es hex de 64 caracteres
+            privateKeyHex = manualInput.toLowerCase();
+          }
+
+          if (privateKeyHex == null) {
+            setState(() {
+              _manualKeyError = l10n.p2pkInvalidPrivateKey;
+              _isProcessing = false;
+            });
+            return;
+          }
+        }
+
+        // Reclamar token P2PK
+        amountReceived = await walletProvider.receiveP2pkToken(
+          token,
+          [privateKeyHex],
+        );
+      } else {
+        // Token normal - flujo existente
+        amountReceived = await walletProvider.receiveToken(token);
+      }
 
       if (mounted) {
         setState(() {
@@ -628,7 +1032,6 @@ class _ReceiveScreenState extends State<ReceiveScreen> {
       }
     } catch (e) {
       if (!mounted) return;
-      final l10n = L10n.of(context)!;
       // Mensajes de error más amigables
       final errorStr = e.toString().toLowerCase();
       String errorMessage;
@@ -636,6 +1039,8 @@ class _ReceiveScreenState extends State<ReceiveScreen> {
         errorMessage = l10n.tokenAlreadyClaimed;
       } else if (errorStr.contains('unknown mint') || errorStr.contains('mint not found')) {
         errorMessage = l10n.unknownMint;
+      } else if (errorStr.contains('cannot unlock') || errorStr.contains('p2pk')) {
+        errorMessage = l10n.p2pkCannotUnlock;
       } else {
         errorMessage = l10n.claimError(e.toString());
       }

lib/screens/8_settings/p2pk_keys_screen.dart

@@ -0,0 +1,772 @@
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+import 'package:lucide_icons/lucide_icons.dart';
+import 'package:provider/provider.dart';
+import 'package:flutter_gen/gen_l10n/app_localizations.dart';
+import 'package:qr_flutter/qr_flutter.dart';
+import '../../core/constants/colors.dart';
+import '../../core/constants/dimensions.dart';
+import '../../core/utils/nostr_utils.dart';
+import '../../providers/p2pk_provider.dart';
+import '../../models/p2pk_key.dart';
+import '../../widgets/common/gradient_background.dart';
+import '../../widgets/common/glass_card.dart';
+
+/// Pantalla para gestionar claves P2PK
+class P2PKKeysScreen extends StatefulWidget {
+  const P2PKKeysScreen({super.key});
+
+  @override
+  State<P2PKKeysScreen> createState() => _P2PKKeysScreenState();
+}
+
+class _P2PKKeysScreenState extends State<P2PKKeysScreen> {
+  @override
+  Widget build(BuildContext context) {
+    final l10n = L10n.of(context)!;
+
+    return GradientBackground(
+      child: Scaffold(
+        backgroundColor: Colors.transparent,
+        appBar: AppBar(
+          backgroundColor: Colors.transparent,
+          elevation: 0,
+          leading: IconButton(
+            icon: const Icon(LucideIcons.arrowLeft, color: Colors.white),
+            onPressed: () => Navigator.pop(context),
+          ),
+          title: Text(
+            l10n.p2pkTitle,
+            style: const TextStyle(
+              fontFamily: 'Inter',
+              fontWeight: FontWeight.w600,
+              color: Colors.white,
+            ),
+          ),
+        ),
+        body: SafeArea(
+          child: Consumer<P2PKProvider>(
+            builder: (context, p2pkProvider, child) {
+              if (!p2pkProvider.isInitialized) {
+                return const Center(
+                  child: CircularProgressIndicator(
+                    color: AppColors.primaryAction,
+                  ),
+                );
+              }
+
+              return Column(
+                children: [
+                  // Contenido scrolleable
+                  Expanded(
+                    child: SingleChildScrollView(
+                      padding: const EdgeInsets.all(AppDimensions.paddingMedium),
+                      child: Column(
+                        crossAxisAlignment: CrossAxisAlignment.stretch,
+                        children: [
+                          // Banner experimental
+                          _buildExperimentalBanner(l10n),
+                          const SizedBox(height: AppDimensions.paddingMedium),
+
+                          // Clave principal
+                          if (p2pkProvider.primaryKey != null) ...[
+                            _buildSectionHeader(l10n.p2pkPrimaryKey),
+                            const SizedBox(height: AppDimensions.paddingSmall),
+                            _buildKeyCard(p2pkProvider.primaryKey!, p2pkProvider, l10n),
+                            const SizedBox(height: AppDimensions.paddingLarge),
+                          ],
+
+                          // Claves importadas
+                          _buildSectionHeader(l10n.p2pkImportedKeys),
+                          const SizedBox(height: AppDimensions.paddingSmall),
+
+                          if (p2pkProvider.importedKeys.isEmpty)
+                            _buildEmptyImportedState(l10n)
+                          else
+                            ...p2pkProvider.importedKeys.map(
+                              (key) => Padding(
+                                padding: const EdgeInsets.only(
+                                  bottom: AppDimensions.paddingSmall,
+                                ),
+                                child: _buildKeyCard(key, p2pkProvider, l10n),
+                              ),
+                            ),
+                        ],
+                      ),
+                    ),
+                  ),
+
+                  // Botón importar (fijo abajo)
+                  if (p2pkProvider.canImportMore)
+                    Padding(
+                      padding: const EdgeInsets.all(AppDimensions.paddingMedium),
+                      child: _buildImportButton(p2pkProvider, l10n),
+                    ),
+                ],
+              );
+            },
+          ),
+        ),
+      ),
+    );
+  }
+
+  Widget _buildExperimentalBanner(L10n l10n) {
+    return Container(
+      padding: const EdgeInsets.all(12),
+      decoration: BoxDecoration(
+        color: AppColors.warning.withValues(alpha: 0.15),
+        borderRadius: BorderRadius.circular(12),
+        border: Border.all(
+          color: AppColors.warning.withValues(alpha: 0.3),
+        ),
+      ),
+      child: Row(
+        children: [
+          Icon(
+            LucideIcons.flaskConical,
+            color: AppColors.warning,
+            size: 20,
+          ),
+          const SizedBox(width: 12),
+          Expanded(
+            child: Text(
+              l10n.p2pkExperimental,
+              style: TextStyle(
+                fontFamily: 'Inter',
+                fontSize: 13,
+                color: AppColors.warning,
+              ),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildSectionHeader(String text) {
+    return Text(
+      text,
+      style: TextStyle(
+        fontFamily: 'Inter',
+        fontSize: 12,
+        fontWeight: FontWeight.bold,
+        letterSpacing: 1.5,
+        color: AppColors.textSecondary.withValues(alpha: 0.6),
+      ),
+    );
+  }
+
+  Widget _buildKeyCard(P2PKKey key, P2PKProvider provider, L10n l10n) {
+    String truncatedNpub;
+    try {
+      final npub = NostrUtils.hexToNpub(key.publicKey);
+      truncatedNpub = '${npub.substring(0, 12)}...${npub.substring(npub.length - 8)}';
+    } catch (_) {
+      truncatedNpub = key.publicKey.length > 16
+          ? '${key.publicKey.substring(0, 16)}...'
+          : key.publicKey;
+    }
+
+    return GlassCard(
+      padding: const EdgeInsets.all(AppDimensions.paddingMedium),
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          // Header con label y badge
+          Row(
+            children: [
+              Expanded(
+                child: Text(
+                  key.label,
+                  style: const TextStyle(
+                    fontFamily: 'Inter',
+                    fontSize: 16,
+                    fontWeight: FontWeight.w600,
+                    color: Colors.white,
+                  ),
+                ),
+              ),
+              Container(
+                padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 4),
+                decoration: BoxDecoration(
+                  color: key.isDerived
+                      ? AppColors.primaryAction.withValues(alpha: 0.2)
+                      : AppColors.secondaryAction.withValues(alpha: 0.2),
+                  borderRadius: BorderRadius.circular(6),
+                ),
+                child: Text(
+                  key.isDerived ? l10n.p2pkDerived : l10n.p2pkImported,
+                  style: TextStyle(
+                    fontFamily: 'Inter',
+                    fontSize: 11,
+                    fontWeight: FontWeight.w500,
+                    color: key.isDerived
+                        ? AppColors.primaryAction
+                        : AppColors.secondaryAction,
+                  ),
+                ),
+              ),
+            ],
+          ),
+
+          const SizedBox(height: 12),
+
+          // npub (tap to copy)
+          GestureDetector(
+            onTap: () {
+              final fullNpub = _safeNpub(key.publicKey);
+              Clipboard.setData(ClipboardData(text: fullNpub));
+              ScaffoldMessenger.of(context).showSnackBar(
+                SnackBar(
+                  content: Text(l10n.copied('npub')),
+                  duration: const Duration(seconds: 2),
+                  backgroundColor: AppColors.success,
+                ),
+              );
+            },
+            child: Container(
+              padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 10),
+              decoration: BoxDecoration(
+                color: Colors.white.withValues(alpha: 0.05),
+                borderRadius: BorderRadius.circular(8),
+                border: Border.all(
+                  color: Colors.white.withValues(alpha: 0.1),
+                ),
+              ),
+              child: Row(
+                children: [
+                  Icon(
+                    LucideIcons.key,
+                    color: AppColors.textSecondary,
+                    size: 16,
+                  ),
+                  const SizedBox(width: 10),
+                  Expanded(
+                    child: Text(
+                      truncatedNpub,
+                      style: TextStyle(
+                        fontFamily: 'monospace',
+                        fontSize: 13,
+                        color: AppColors.textSecondary,
+                      ),
+                    ),
+                  ),
+                  Icon(
+                    LucideIcons.copy,
+                    color: AppColors.textSecondary.withValues(alpha: 0.5),
+                    size: 16,
+                  ),
+                ],
+              ),
+            ),
+          ),
+
+          const SizedBox(height: 12),
+
+          // Acciones
+          Row(
+            children: [
+              // Mostrar QR
+              Expanded(
+                child: GestureDetector(
+                  onTap: () => _showQRDialog(key, l10n),
+                  child: Container(
+                    padding: const EdgeInsets.symmetric(vertical: 10),
+                    decoration: BoxDecoration(
+                      color: Colors.white.withValues(alpha: 0.08),
+                      borderRadius: BorderRadius.circular(8),
+                    ),
+                    child: Row(
+                      mainAxisAlignment: MainAxisAlignment.center,
+                      children: [
+                        Icon(
+                          LucideIcons.qrCode,
+                          color: AppColors.textSecondary,
+                          size: 16,
+                        ),
+                        const SizedBox(width: 8),
+                        Text(
+                          l10n.p2pkShowQR,
+                          style: TextStyle(
+                            fontFamily: 'Inter',
+                            fontSize: 13,
+                            color: AppColors.textSecondary,
+                          ),
+                        ),
+                      ],
+                    ),
+                  ),
+                ),
+              ),
+
+              // Eliminar (solo para importadas)
+              if (!key.isDerived) ...[
+                const SizedBox(width: 8),
+                GestureDetector(
+                  onTap: () => _showDeleteDialog(key, provider, l10n),
+                  child: Container(
+                    padding: const EdgeInsets.symmetric(
+                      horizontal: 16,
+                      vertical: 10,
+                    ),
+                    decoration: BoxDecoration(
+                      color: AppColors.error.withValues(alpha: 0.15),
+                      borderRadius: BorderRadius.circular(8),
+                    ),
+                    child: Icon(
+                      LucideIcons.trash2,
+                      color: AppColors.error,
+                      size: 16,
+                    ),
+                  ),
+                ),
+              ],
+            ],
+          ),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildEmptyImportedState(L10n l10n) {
+    return Container(
+      padding: const EdgeInsets.all(24),
+      decoration: BoxDecoration(
+        color: Colors.white.withValues(alpha: 0.03),
+        borderRadius: BorderRadius.circular(16),
+        border: Border.all(
+          color: Colors.white.withValues(alpha: 0.1),
+        ),
+      ),
+      child: Column(
+        children: [
+          Icon(
+            LucideIcons.keyRound,
+            color: AppColors.textSecondary.withValues(alpha: 0.4),
+            size: 40,
+          ),
+          const SizedBox(height: 12),
+          Text(
+            l10n.p2pkNoImportedKeys,
+            style: TextStyle(
+              fontFamily: 'Inter',
+              fontSize: 14,
+              color: AppColors.textSecondary.withValues(alpha: 0.6),
+            ),
+            textAlign: TextAlign.center,
+          ),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildImportButton(P2PKProvider provider, L10n l10n) {
+    return GestureDetector(
+      onTap: () => _showImportDialog(provider, l10n),
+      child: Container(
+        padding: const EdgeInsets.symmetric(vertical: 16),
+        decoration: BoxDecoration(
+          gradient: const LinearGradient(
+            colors: [AppColors.primaryAction, Color(0xFFFF9100)],
+          ),
+          borderRadius: BorderRadius.circular(16),
+        ),
+        child: Row(
+          mainAxisAlignment: MainAxisAlignment.center,
+          children: [
+            const Icon(LucideIcons.plus, color: Colors.white, size: 20),
+            const SizedBox(width: 8),
+            Text(
+              l10n.p2pkImportNsec,
+              style: const TextStyle(
+                fontFamily: 'Inter',
+                fontSize: 16,
+                fontWeight: FontWeight.w600,
+                color: Colors.white,
+              ),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+
+  // ============ DIÁLOGOS ============
+
+  void _showQRDialog(P2PKKey key, L10n l10n) {
+    final npub = _safeNpub(key.publicKey);
+
+    showDialog(
+      context: context,
+      builder: (context) => AlertDialog(
+        backgroundColor: AppColors.deepVoidPurple,
+        shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(24)),
+        content: SizedBox(
+          width: 280,
+          child: Column(
+            mainAxisSize: MainAxisSize.min,
+            children: [
+              Text(
+                key.label,
+                style: const TextStyle(
+                  fontFamily: 'Inter',
+                  fontSize: 18,
+                  fontWeight: FontWeight.bold,
+                  color: Colors.white,
+                ),
+              ),
+              const SizedBox(height: 16),
+              Container(
+                padding: const EdgeInsets.all(16),
+                decoration: BoxDecoration(
+                  color: Colors.white,
+                  borderRadius: BorderRadius.circular(12),
+                ),
+                child: QrImageView(
+                  data: npub,
+                  version: QrVersions.auto,
+                  size: 200,
+                  backgroundColor: Colors.white,
+                ),
+              ),
+              const SizedBox(height: 16),
+              GestureDetector(
+                onTap: () {
+                  Clipboard.setData(ClipboardData(text: npub));
+                  ScaffoldMessenger.of(context).showSnackBar(
+                    SnackBar(
+                      content: Text(l10n.copied('npub')),
+                      duration: const Duration(seconds: 2),
+                      backgroundColor: AppColors.success,
+                    ),
+                  );
+                },
+                child: Container(
+                  padding: const EdgeInsets.symmetric(
+                    horizontal: 16,
+                    vertical: 10,
+                  ),
+                  decoration: BoxDecoration(
+                    color: Colors.white.withValues(alpha: 0.1),
+                    borderRadius: BorderRadius.circular(8),
+                  ),
+                  child: Row(
+                    mainAxisSize: MainAxisSize.min,
+                    children: [
+                      Icon(
+                        LucideIcons.copy,
+                        color: AppColors.textSecondary,
+                        size: 16,
+                      ),
+                      const SizedBox(width: 8),
+                      Text(
+                        l10n.p2pkCopy,
+                        style: TextStyle(
+                          fontFamily: 'Inter',
+                          fontSize: 14,
+                          color: AppColors.textSecondary,
+                        ),
+                      ),
+                    ],
+                  ),
+                ),
+              ),
+            ],
+          ),
+        ),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.pop(context),
+            child: Text(
+              l10n.close,
+              style: const TextStyle(
+                fontFamily: 'Inter',
+                color: AppColors.textSecondary,
+              ),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  void _showImportDialog(P2PKProvider provider, L10n l10n) {
+    final nsecController = TextEditingController();
+    final labelController = TextEditingController();
+    bool obscureNsec = true;
+    String? errorMessage;
+
+    showDialog(
+      context: context,
+      builder: (context) => StatefulBuilder(
+        builder: (context, setDialogState) {
+          final nsecBorder = OutlineInputBorder(
+            borderRadius: BorderRadius.circular(12),
+            borderSide: errorMessage != null
+                ? const BorderSide(color: AppColors.error)
+                : BorderSide.none,
+          );
+          return AlertDialog(
+          backgroundColor: AppColors.deepVoidPurple,
+          shape: RoundedRectangleBorder(
+            borderRadius: BorderRadius.circular(24),
+          ),
+          title: Text(
+            l10n.p2pkImportNsec,
+            style: const TextStyle(
+              fontFamily: 'Inter',
+              fontSize: 20,
+              fontWeight: FontWeight.bold,
+              color: Colors.white,
+            ),
+          ),
+          content: SizedBox(
+            width: 300,
+            child: Column(
+              mainAxisSize: MainAxisSize.min,
+              crossAxisAlignment: CrossAxisAlignment.stretch,
+              children: [
+                // Label
+                TextField(
+                  controller: labelController,
+                  style: const TextStyle(
+                    fontFamily: 'Inter',
+                    fontSize: 14,
+                    color: Colors.white,
+                  ),
+                  decoration: InputDecoration(
+                    hintText: l10n.p2pkEnterLabel,
+                    hintStyle: TextStyle(
+                      fontFamily: 'Inter',
+                      fontSize: 14,
+                      color: Colors.white.withValues(alpha: 0.3),
+                    ),
+                    filled: true,
+                    fillColor: Colors.white.withValues(alpha: 0.05),
+                    border: OutlineInputBorder(
+                      borderRadius: BorderRadius.circular(12),
+                      borderSide: BorderSide.none,
+                    ),
+                    prefixIcon: Icon(
+                      LucideIcons.tag,
+                      color: AppColors.textSecondary,
+                      size: 18,
+                    ),
+                  ),
+                ),
+
+                const SizedBox(height: 12),
+
+                // nsec input
+                TextField(
+                  controller: nsecController,
+                  obscureText: obscureNsec,
+                  style: const TextStyle(
+                    fontFamily: 'monospace',
+                    fontSize: 14,
+                    color: Colors.white,
+                  ),
+                  decoration: InputDecoration(
+                    hintText: 'nsec1...',
+                    hintStyle: TextStyle(
+                      fontFamily: 'monospace',
+                      fontSize: 14,
+                      color: Colors.white.withValues(alpha: 0.3),
+                    ),
+                    filled: true,
+                    fillColor: Colors.white.withValues(alpha: 0.05),
+                    border: nsecBorder,
+                    enabledBorder: nsecBorder,
+                    focusedBorder: nsecBorder,
+                    prefixIcon: Icon(
+                      LucideIcons.keyRound,
+                      color: AppColors.textSecondary,
+                      size: 18,
+                    ),
+                    suffixIcon: Row(
+                      mainAxisSize: MainAxisSize.min,
+                      children: [
+                        IconButton(
+                          icon: Icon(
+                            obscureNsec ? LucideIcons.eye : LucideIcons.eyeOff,
+                            color: AppColors.textSecondary,
+                            size: 18,
+                          ),
+                          onPressed: () {
+                            setDialogState(() => obscureNsec = !obscureNsec);
+                          },
+                        ),
+                        IconButton(
+                          icon: Icon(
+                            LucideIcons.clipboard,
+                            color: AppColors.textSecondary,
+                            size: 18,
+                          ),
+                          onPressed: () async {
+                            final data = await Clipboard.getData('text/plain');
+                            if (data?.text != null) {
+                              nsecController.text = data!.text!;
+                            }
+                          },
+                        ),
+                      ],
+                    ),
+                  ),
+                ),
+
+                // Error message
+                if (errorMessage != null) ...[
+                  const SizedBox(height: 8),
+                  Text(
+                    errorMessage!,
+                    style: const TextStyle(
+                      fontFamily: 'Inter',
+                      fontSize: 12,
+                      color: AppColors.error,
+                    ),
+                  ),
+                ],
+              ],
+            ),
+          ),
+          actions: [
+            TextButton(
+              onPressed: () => Navigator.pop(context),
+              child: Text(
+                l10n.cancel,
+                style: const TextStyle(
+                  fontFamily: 'Inter',
+                  color: AppColors.textSecondary,
+                ),
+              ),
+            ),
+            TextButton(
+              onPressed: () async {
+                try {
+                  await provider.importFromNsec(
+                    nsecController.text.trim(),
+                    labelController.text.trim(),
+                  );
+                  if (context.mounted) {
+                    Navigator.pop(context);
+                    ScaffoldMessenger.of(context).showSnackBar(
+                      SnackBar(
+                        content: Text(l10n.success),
+                        backgroundColor: AppColors.success,
+                      ),
+                    );
+                  }
+                } on P2PKException catch (e) {
+                  setDialogState(() {
+                    errorMessage = _getErrorMessage(e.code, l10n);
+                  });
+                }
+              },
+              child: Text(
+                l10n.p2pkImport,
+                style: const TextStyle(
+                  fontFamily: 'Inter',
+                  fontWeight: FontWeight.w600,
+                  color: AppColors.primaryAction,
+                ),
+              ),
+            ),
+          ],
+        );
+        },
+      ),
+    );
+  }
+
+  void _showDeleteDialog(P2PKKey key, P2PKProvider provider, L10n l10n) {
+    showDialog(
+      context: context,
+      builder: (context) => AlertDialog(
+        backgroundColor: AppColors.deepVoidPurple,
+        shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(24)),
+        title: Text(
+          l10n.p2pkDeleteTitle,
+          style: const TextStyle(
+            fontFamily: 'Inter',
+            fontSize: 18,
+            fontWeight: FontWeight.bold,
+            color: Colors.white,
+          ),
+        ),
+        content: Text(
+          l10n.p2pkDeleteConfirm,
+          style: TextStyle(
+            fontFamily: 'Inter',
+            fontSize: 14,
+            color: AppColors.textSecondary,
+          ),
+        ),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.pop(context),
+            child: Text(
+              l10n.cancel,
+              style: const TextStyle(
+                fontFamily: 'Inter',
+                color: AppColors.textSecondary,
+              ),
+            ),
+          ),
+          TextButton(
+            onPressed: () async {
+              try {
+                await provider.removeKey(key.id);
+                if (context.mounted) {
+                  Navigator.pop(context);
+                }
+              } catch (e) {
+                if (context.mounted) {
+                  Navigator.pop(context);
+                  ScaffoldMessenger.of(context).showSnackBar(
+                    SnackBar(
+                      content: Text(l10n.error),
+                      backgroundColor: AppColors.error,
+                    ),
+                  );
+                }
+              }
+            },
+            child: Text(
+              l10n.delete,
+              style: const TextStyle(
+                fontFamily: 'Inter',
+                fontWeight: FontWeight.w600,
+                color: AppColors.error,
+              ),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  /// Convierte hex a npub de forma segura, retornando el hex como fallback.
+  String _safeNpub(String hex) {
+    try {
+      return NostrUtils.hexToNpub(hex);
+    } catch (_) {
+      return hex;
+    }
+  }
+
+  String _getErrorMessage(P2PKErrorCode code, L10n l10n) {
+    switch (code) {
+      case P2PKErrorCode.maxKeysReached:
+        return l10n.p2pkErrorMaxKeysReached;
+      case P2PKErrorCode.invalidNsec:
+        return l10n.p2pkErrorInvalidNsec;
+      case P2PKErrorCode.keyAlreadyExists:
+        return l10n.p2pkErrorKeyAlreadyExists;
+      case P2PKErrorCode.keyNotFound:
+        return l10n.p2pkErrorKeyNotFound;
+      case P2PKErrorCode.cannotDeletePrimaryKey:
+        return l10n.p2pkErrorCannotDeletePrimary;
+    }
+  }
+}

lib/screens/8_settings/settings_screen.dart

@@ -13,6 +13,7 @@ import '../../widgets/common/glass_card.dart';
 import '../2_onboarding/backup_seed_screen.dart';
 import 'mints_screen.dart';
 import 'language_screen.dart';
+import 'p2pk_keys_screen.dart';
 
 /// Pantalla de configuración
 class SettingsScreen extends StatefulWidget {
@@ -94,6 +95,7 @@ class _SettingsScreenState extends State<SettingsScreen> {
                       subtitle: l10n.scanMintsWithSeed,
                       onTap: () => _showRecoverTokensDialog(context, settingsProvider),
                     ),
+                    _buildP2PKTile(l10n),
 
                     const SizedBox(height: AppDimensions.paddingLarge),
 
@@ -225,6 +227,100 @@ class _SettingsScreenState extends State<SettingsScreen> {
     );
   }
 
+  Widget _buildP2PKTile(L10n l10n) {
+    return GlassCard(
+      onTap: () {
+        Navigator.push(
+          context,
+          MaterialPageRoute(
+            builder: (context) => const P2PKKeysScreen(),
+          ),
+        );
+      },
+      padding: const EdgeInsets.symmetric(
+        horizontal: AppDimensions.paddingMedium,
+        vertical: AppDimensions.paddingMedium,
+      ),
+      child: Row(
+        children: [
+          Container(
+            width: 40,
+            height: 40,
+            decoration: BoxDecoration(
+              color: Colors.white.withValues(alpha: 0.1),
+              borderRadius: BorderRadius.circular(10),
+            ),
+            child: const Icon(LucideIcons.keyRound, color: AppColors.textSecondary, size: 20),
+          ),
+          const SizedBox(width: AppDimensions.paddingMedium),
+          Expanded(
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: [
+                // Título con badge experimental
+                Row(
+                  children: [
+                    Text(
+                      l10n.p2pkTitle,
+                      style: const TextStyle(
+                        fontFamily: 'Inter',
+                        fontSize: 16,
+                        fontWeight: FontWeight.w500,
+                        color: Colors.white,
+                      ),
+                    ),
+                    const SizedBox(width: 8),
+                    Container(
+                      padding: const EdgeInsets.symmetric(horizontal: 6, vertical: 2),
+                      decoration: BoxDecoration(
+                        color: AppColors.error.withValues(alpha: 0.2),
+                        borderRadius: BorderRadius.circular(4),
+                      ),
+                      child: Row(
+                        mainAxisSize: MainAxisSize.min,
+                        children: [
+                          Icon(
+                            LucideIcons.flaskConical,
+                            color: AppColors.error,
+                            size: 12,
+                          ),
+                          const SizedBox(width: 4),
+                          Text(
+                            l10n.p2pkExperimentalShort,
+                            style: const TextStyle(
+                              fontFamily: 'Inter',
+                              fontSize: 10,
+                              fontWeight: FontWeight.w600,
+                              color: AppColors.error,
+                            ),
+                          ),
+                        ],
+                      ),
+                    ),
+                  ],
+                ),
+                // Descripción normal
+                Text(
+                  l10n.p2pkSettingsDescription,
+                  style: TextStyle(
+                    fontFamily: 'Inter',
+                    fontSize: 14,
+                    color: AppColors.textSecondary.withValues(alpha: 0.7),
+                  ),
+                ),
+              ],
+            ),
+          ),
+          Icon(
+            LucideIcons.chevronRight,
+            color: AppColors.textSecondary.withValues(alpha: 0.5),
+            size: 20,
+          ),
+        ],
+      ),
+    );
+  }
+
   Widget _buildInfoTile({
     required IconData icon,
     required String title,