ItemCheck

How It Works

Every valuable item gets a unique fingerprint based on its NBT data. When players move items around, the plugin
tracks these fingerprints and catches duplicates before they spread.

---

Features

• Unique item fingerprinting with NBT tracking
• Real-time duplicate detection
• Packet manipulation protection
• Shulker box exploit prevention
• Book/chunk dupe detection
• Inventory rollback protection
• Custom item support for plugin items
• Discord webhook alerts
• Admin GUI dashboard
• Transaction history logging

---

Commands

Command	Description
/antidupe	Opens admin dashboard
/antidupe register	Register custom items
/antidupe unregister	Remove registered item
/antidupe list	Show all tracked items
/antidupe scan	Scan player inventory
/antidupe reload	Reload configuration
/antidupe stats	View detection statistics
/antidupe clear	Clear detection data
/antidupe track	Add item to tracking
/antidupe debug	Toggle debug mode

---

Permissions

Permission	Description
antidupe.admin	Full access
antidupe.register	Register items
antidupe.unregister	Remove items
antidupe.list	View item list
antidupe.scan	Scan players
antidupe.reload	Reload config
antidupe.stats	View statistics
antidupe.clear	Clear data
antidupe.track	Track items
antidupe.debug	Debug mode
antidupe.notify	Get alerts
antidupe.bypass	Bypass detection

---

Screenshots

Configuration

Spoiler

  # AntiDupe Configuration
  # General Settings
  debug-mode: false
  auto-scan-on-join: true
  save-interval: 300  # Save data every 5 minutes (in seconds)

  # Language Settings
  # Available languages: en_US, es_ES, zh_CN, ja_JP, ru_RU
  language: "en_US"

  # Discord Notifications
  notifications:
    discord:
      enabled: false
      webhook-url: ""
      send-detections: true
      send-registrations: true
      send-duplications: true
      quarantine-notifications: true
      minimum-severity: 0.5
      cooldown: 5
      mention-roles: []
      tracked-items: []

  # Detection Settings
  detection:
    enabled: true
    notify-admins: true
    log-to-console: true
    prevent-actions:
      prevent-pickup: false
      prevent-move: false
      prevent-craft: false
      prevent-trade: false

  # Packet Detection Settings
  packet-detection:
    enabled: true
    max-packets-per-second: 300
    max-click-speed: 40
    max-creative-packets: 50
    packet-delay-threshold: 25
    sensitivity: 1.0
    use-pattern-analysis: true
    tps-compensation: true
    warning-threshold: 3
    base-confidence-threshold: 0.7

  # Item Tracking Settings
  tracking:
    time-window-hours: 24
    expected-insertions: 100000
    only-track-valuable: true

  # Valuable Items List
  valuable-items:
    - DIAMOND
    - DIAMOND_BLOCK
    - NETHERITE_INGOT
    - EMERALD
    - ELYTRA
    # ... (full list in actual config)

  # Block Mining Tracking
  block-tracking:
    enabled: true
    track-all-blocks: false
    tracked-blocks:
      - DIAMOND_ORE
      - ANCIENT_DEBRIS
      # ... (full list in actual config)

  # Velocity Detection
  velocity:
    enabled: true
    time-window-ms: 10000
    max-rates:
      DIAMOND: 0.5
      NETHERITE_INGOT: 0.1
      # ... (full list in actual config)

  # Quarantine System
  quarantine:
    auto-quarantine-suspicious: false
    auto-confidence-threshold: 0.8
    max-items-per-player: 54
    auto-release-hours: 72
    notify-player: true

  # Performance Settings
  performance:
    async-detection: true
    cleanup-interval: 600
    max-cpu-usage: 50

You can add more items in config.yml and adjust detection sensitivity.

---

Detection Methods

• Velocity Tracking: Catches items appearing too fast
• Cluster Detection: Spots identical items in groups
• Cross Validation: Verifies item movements match expected behavior
• Packet Analysis: Detects client manipulation attempts
• Pattern Recognition: Identifies macro and bot patterns