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Changelog

All notable changes to PropChain-BackEnd are documented in this file.

The format is based on Keep a Changelog and this project adheres to Semantic Versioning.

[Unreleased]

Added

  • Changelog documentation and maintenance guide

Changed

Deprecated

Removed

Fixed

Security

[1.0.0] - 2026-06-01

Added

  • User Management: Registration, authentication, and profile management with JWT tokens
  • Role-Based Access Control: USER, AGENT, and ADMIN roles with route protection
  • Property Listings: Create, manage, and search property listings
  • Transaction Tracking: Record and track real estate transactions with blockchain integration
  • Document Management: Store and manage property-related documents with signing support
  • Tax Strategy Suggestions: Store non-binding tax structuring suggestions for transactions
  • Email Digest System: Scheduled email notifications for user property updates
  • Blockchain Integration: Record transactions on blockchain with hash generation and verification
  • Fraud Detection: ML-based fraud detection system with anomaly analysis
  • API Key Management: Generate and manage API keys with permission-based access control
  • Session Management: Secure user session tracking with multi-device support
  • Search Functionality: Full-text search for properties with faceted filtering
  • Admin Dashboard: Comprehensive admin interface for user and property management
  • Open House Management: Schedule and manage open house viewings
  • Property Comparison: Compare multiple properties side-by-side
  • Notifications: Real-time notifications via WebSocket connections
  • GraphQL API: Full GraphQL schema for flexible querying
  • Swagger Documentation: Auto-generated API documentation

Database Migrations

Feature Migration
Location & search logs 20260222084710_location, 20260222091519_add_search_logs
Password history 20260324073730_add_password_history
API key rotation analytics 20260324084550_add_api_key_rotation_analytics
Composite indexes 20260325120000_composite_indexes
SEO & soft delete 20260330000000_add_seo_and_soft_delete_fields
Auth security foundation 20260422000000_add_auth_security_foundation
Google OAuth 20260422000001_add_google_oauth
User preferences & verification docs 20260422000001_add_user_preferences_and_verification_documents
Session management 20260422170000_add_session_management
Trust score 20260422180000_add_trust_score
API key permissions & usage 20260423000000_add_api_key_permissions_and_usage
Document features 20260424000000_add_document_features
Fraud detection 20260424010000_add_fraud_detection
Database backup management 20260425093000_add_database_backup_management
Email digest & transaction audit 20260429000000_add_email_digest, 20260429000000_add_transaction_audit_log
Transaction lifecycle enforcement 20260429000000_enforce_transaction_status_lifecycle
Transaction documents 20260429001000_add_transaction_documents

Fixed

  • Race condition in concurrent document uploads
  • Memory leak in WebSocket connection handling
  • Incorrect user role checks in disputes controller
  • SQL injection vulnerability in search queries
  • Email sending failures with retry logic

Security

  • Implemented password hashing with bcrypt
  • Added JWT token validation and expiration
  • Enforced HTTPS-only cookie transmission
  • Rate limiting on authentication endpoints (5 attempts/15 minutes)
  • Validated all file type uploads to prevent malicious script execution
  • Database connection pooling and query parameterization

Legend

  • Added: New features and capabilities
  • Changed: Changes to existing functionality
  • Deprecated: Features marked for removal in future versions
  • Removed: Features removed from this release
  • Fixed: Bug fixes and resolved issues
  • Security: Security vulnerability patches and hardening improvements

For details on how to maintain this changelog, see CHANGELOG_GUIDE.md.