// Flutter Implementation Example
class VerificationStamp {
  final GeoPoint location;
  final DateTime timestamp;
  final String deviceId;
  final String userHash;
 
  Future<Uint8List> applyStamps(Uint8List imageBytes) async {
    // Add visible watermarks
    // Embed metadata in EXIF
    // Generate QR code overlay
  }
}

class DualCameraController {
  CameraController frontCamera;
  CameraController rearCamera;
 
  Future<CapturedMedia> captureSimultaneous() async {
    // Capture from both cameras
    // Merge with verification data
    // Generate composite hash
  }
}

class Web2BlockchainService:
    def __init__(self):
        self.cloud_providers = [‘google_drive’, ‘onedrive’, ‘yandex_disk’]
        self.social_platforms = [‘twitter’, ‘facebook’, ‘telegram’]
   
    async def create_immutable_record(self, media_file, verification_data):
        # Multi-cloud upload
        cloud_hashes = await self.upload_to_multiple_clouds(media_file)
       
        # Social media timestamping
        social_proofs = await self.create_social_timestamps(media_file)
       
        # Generate composite proof
        return self.generate_composite_hash(cloud_hashes + social_proofs)

class SmartQRGenerator {
  static String generateVerificationQR({
    required String mediaHash,
    required LocationData location,
    required DateTime timestamp,
    required String userId,
    String? encryptionKey
  }) {
    final payload = {
      ‘hash’: mediaHash,
      ‘lat’: location.latitude,
      ‘lng’: location.longitude,
      ‘time’: timestamp.millisecondsSinceEpoch,
      ‘user’: userId,
      ‘sig’: _generateSignature(mediaHash, encryptionKey)
    };
    return jsonEncode(payload);
  }
}

class TamperDetectionService:
    def __init__(self):
        self.model = load_tensorflow_model(‘tamper_detection.h5’)
   
    def analyze_authenticity(self, image_path):
        # Check for digital manipulation
        # Verify watermark consistency
        # Validate metadata integrity
        return AuthenticityScore(
            manipulation_probability,
            watermark_integrity,
            metadata_consistency
        )

class DistributedStorageEngine {
    async uploadToAllProviders(fileBuffer, fileName) {
        const providers = [
            this.uploadToGoogleDrive.bind(this),
            this.uploadToOneDrive.bind(this),
            this.uploadToYandexDisk.bind(this),
            this.uploadToIPFS.bind(this) // Optional Web3
        ];
       
        const results = await Promise.allSettled(
            providers.map(provider => provider(fileBuffer, fileName))
        );
       
        return this.processUploadResults(results);
    }
}

justify-backend/
├── auth-service/          # User authentication
├── media-service/         # Photo/video processing
├── verification-service/  # Stamp & QR generation
├── storage-service/       # Multi-cloud management
├── blockchain-service/    # Web2 immutability layer
└── api-gateway/          # Unified API endpoint

// MongoDB Collections
users: {
  _id, username, email, verified, created_at
}

media_records: {
  _id, user_id, file_hash, original_filename,
  verification_data: {
    location: { lat, lng, address },
    timestamp: Date,
    device_info: {},
    stamps_applied: []
  },
  storage_proofs: {
    google_drive_id,
    onedrive_id,
    yandex_disk_id,
    social_timestamps: []
  },
  qr_data: {},
  accessibility: ‘public’ | ‘private’ | ‘licensed’
}

class CryptographicService {
  static String generateMediaHash(Uint8List mediaData) {
    return sha256.convert(mediaData).toString();
  }
 
  static String createDigitalSignature(String hash, String privateKey) {
    // ECDSA or RSA signing
    return signature;
  }
 
  static bool verifySignature(String hash, String signature, String publicKey) {
    // Signature verification
    return isValid;
  }
}

// lib/
// ├── main.dart
// ├── src/
// │ ├── features/
// │ │ ├── camera/
// │ │ ├── gallery/
// │ │ ├── verification/
// │ │ └── profile/
// │ ├── core/
// │ │ ├── services/
// │ │ ├── models/
// │ │ └── utils/
// │ └── shared/
// │ ├── widgets/
// │ └── themes/

class JustifyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MultiProvider(
providers: [
ChangeNotifierProvider(create: () => CameraService()), ChangeNotifierProvider(create: () => VerificationService()),
ChangeNotifierProvider(create: (_) => StorageService()),
],
child: MaterialApp(
title: ‘Justify – Verified Media’,
theme: AppTheme.lightTheme,
home: HomeScreen(),
),
);
}
}

// REST API Structure
POST   /api/v1/auth/register
POST   /api/v1/auth/login
POST   /api/v1/media/capture
GET    /api/v1/media/:id/verify
POST   /api/v1/media/:id/share
GET    /api/v1/user/profile
PUT    /api/v1/user/settings

// WebSocket for real-time verification
ws:///api/v1/verification/stream

docker-compose.prod.yml

version: ‘3.8’
services:
frontend:
build: ./flutter-build
ports: [“80:80”, “443:443”]

backend:
build: ./backend
environment:
– MONGODB_URI=${MONGODB_URI}
– REDIS_URL=${REDIS_URL}
– GOOGLE_API_KEY=${GOOGLE_API_KEY}

redis:
image: redis:alpine

nginx:
image: nginx:alpine
volumes:
– ./nginx.conf:/etc/nginx/nginx.conf

Created By Manuel Organic İntelligence +Grok And Deepseek