### How It Works<\/p>\n
Every valuable item gets a unique fingerprint based on its NBT data. When players move items around, the plugin
\n tracks these fingerprints and catches duplicates before they spread.<\/p>\n
—
\n ### Features<\/p>\n
– Unique item fingerprinting with NBT tracking
\n – Real-time duplicate detection
\n – Packet manipulation protection
\n – Shulker box exploit prevention
\n – Book\/chunk dupe detection
\n – Inventory rollback protection
\n – Custom item support for plugin items
\n – Discord webhook alerts
\n – Admin GUI dashboard
\n – Transaction history logging<\/p>\n
—
\n ### Commands<\/p>\n
| Command | Description | — | Permission | Description | —  “` # Language Settings # Discord Notifications # Detection Settings # Packet Detection Settings # Item Tracking Settings # Valuable Items List # Block Mining Tracking # Velocity Detection # Quarantine System # Performance Settings You can add more items in config.yml and adjust detection sensitivity.<\/p>\n — – Velocity Tracking: Catches items appearing too fast Anti-dupe with NBT fingerprinting and packet analysis protection.<\/p>\n","protected":false},"featured_media":86928,"template":"","meta":{"_minecraft_slug":"itemcheck","_minecraft_project_id":"XcTbltcX","_minecraft_author":"TheeCobra","_minecraft_license":"MIT","_minecraft_downloads":237,"_minecraft_follows":2,"_minecraft_client_side":"unsupported","_minecraft_server_side":"required","_minecraft_storage_type":"zip","_minecraft_archive_name":"itemcheck.zip","_minecraft_size_bytes":40280114,"_minecraft_version_count":7,"_minecraft_updated_at":"2026-05-16T12:16:19.141263Z","_minecraft_date_created":"2025-10-03T22:39:21.973950Z","_minecraft_date_modified":"2026-04-22T03:49:27.256323Z","_minecraft_project_url":"https:\/\/modrinth.com\/mod\/itemcheck","_minecraft_icon_attachment_id":86928,"_minecraft_imported_at":"2026-06-04T23:10:53+00:00","_minecraft_import_hash":"96dbdb922bfbeead440ad67b48b14498","_minecraft_versions":"","_minecraft_links":"","_minecraft_gallery":"","_minecraft_api_metadata":""},"mod_category":[124,126,90,127,129,92],"mod_loader":[130,132,134],"minecraft_version":[59,36,60,93,94,101,102,62,37,40,41,73,74,38,78,79,80,81,82],"class_list":["post-86927","mod","type-mod","status-publish","has-post-thumbnail","hentry","mod_category-bukkit","mod_category-management","mod_category-optimization","mod_category-paper","mod_category-spigot","mod_category-utility","mod_loader-bukkit","mod_loader-paper","mod_loader-spigot","minecraft_version-1-20","minecraft_version-1-20-1","minecraft_version-1-20-2","minecraft_version-1-20-3","minecraft_version-1-20-4","minecraft_version-1-20-5","minecraft_version-1-20-6","minecraft_version-1-21","minecraft_version-1-21-1","minecraft_version-1-21-10","minecraft_version-1-21-11","minecraft_version-1-21-2","minecraft_version-1-21-3","minecraft_version-1-21-4","minecraft_version-1-21-5","minecraft_version-1-21-6","minecraft_version-1-21-7","minecraft_version-1-21-8","minecraft_version-1-21-9"],"yoast_head":"\n
\n |—————————|—————————|
\n | \/antidupe | Opens admin dashboard |
\n | \/antidupe register | Register custom items |
\n | \/antidupe unregister
\n | \/antidupe list | Show all tracked items |
\n | \/antidupe scan
\n | \/antidupe reload | Reload configuration |
\n | \/antidupe stats | View detection statistics |
\n | \/antidupe clear | Clear detection data |
\n | \/antidupe track
\n | \/antidupe debug | Toggle debug mode |<\/p>\n
\n ### Permissions<\/p>\n
\n |———————|——————|
\n | antidupe.admin | Full access |
\n | antidupe.register | Register items |
\n | antidupe.unregister | Remove items |
\n | antidupe.list | View item list |
\n | antidupe.scan | Scan players |
\n | antidupe.reload | Reload config |
\n | antidupe.stats | View statistics |
\n | antidupe.clear | Clear data |
\n | antidupe.track | Track items |
\n | antidupe.debug | Debug mode |
\n | antidupe.notify | Get alerts |
\n | antidupe.bypass | Bypass detection |<\/p>\n
\n ### Screenshots<\/p>\n
\n
\n
\n
\n —
\n ### Configuration<\/p>\nSpoiler<\/summary>\n
\n # AntiDupe Configuration
\n # General Settings
\n debug-mode: false
\n auto-scan-on-join: true
\n save-interval: 300 # Save data every 5 minutes (in seconds)<\/p>\n
\n # Available languages: en_US, es_ES, zh_CN, ja_JP, ru_RU
\n language: “en_US”<\/p>\n
\n notifications:
\n discord:
\n enabled: false
\n webhook-url: “”
\n send-detections: true
\n send-registrations: true
\n send-duplications: true
\n quarantine-notifications: true
\n minimum-severity: 0.5
\n cooldown: 5
\n mention-roles: []
\n tracked-items: []<\/p>\n
\n detection:
\n enabled: true
\n notify-admins: true
\n log-to-console: true
\n prevent-actions:
\n prevent-pickup: false
\n prevent-move: false
\n prevent-craft: false
\n prevent-trade: false<\/p>\n
\n packet-detection:
\n enabled: true
\n max-packets-per-second: 300
\n max-click-speed: 40
\n max-creative-packets: 50
\n packet-delay-threshold: 25
\n sensitivity: 1.0
\n use-pattern-analysis: true
\n tps-compensation: true
\n warning-threshold: 3
\n base-confidence-threshold: 0.7<\/p>\n
\n tracking:
\n time-window-hours: 24
\n expected-insertions: 100000
\n only-track-valuable: true<\/p>\n
\n valuable-items:
\n – DIAMOND
\n – DIAMOND_BLOCK
\n – NETHERITE_INGOT
\n – EMERALD
\n – ELYTRA
\n # … (full list in actual config)<\/p>\n
\n block-tracking:
\n enabled: true
\n track-all-blocks: false
\n tracked-blocks:
\n – DIAMOND_ORE
\n – ANCIENT_DEBRIS
\n # … (full list in actual config)<\/p>\n
\n velocity:
\n enabled: true
\n time-window-ms: 10000
\n max-rates:
\n DIAMOND: 0.5
\n NETHERITE_INGOT: 0.1
\n # … (full list in actual config)<\/p>\n
\n quarantine:
\n auto-quarantine-suspicious: false
\n auto-confidence-threshold: 0.8
\n max-items-per-player: 54
\n auto-release-hours: 72
\n notify-player: true<\/p>\n
\n performance:
\n async-detection: true
\n cleanup-interval: 600
\n max-cpu-usage: 50
\n“`<\/p>\n<\/details>\n
\n ### Detection Methods<\/p>\n
\n – Cluster Detection: Spots identical items in groups
\n – Cross Validation: Verifies item movements match expected behavior
\n – Packet Analysis: Detects client manipulation attempts
\n – Pattern Recognition: Identifies macro and bot patterns<\/p>\n","protected":false},"excerpt":{"rendered":"