Hash Matching and Databases
13 tools
Audible MagicContent identification for music and video, used across social platforms and devices.Hash matching and databases · Enterprise
GIFCT Hash-Sharing DatabaseShared hashes of terrorist and violent extremist content, for members.Hash matching and databases · Free to qualifying organizations
Hasher-Matcher-ActionerOpen service that hashes media, matches it against lists and acts on it.Hash matching and databases · Open source
LanternCross platform signal sharing for child safety violations.Hash matching and databases · Free to qualifying organizations- PDQOpen perceptual hash for images, with a matcher to go with it.Hash matching and databases · Open source
PerceptionOpen Python wrapper over several perceptual hashing implementations.Hash matching and databases · Open source
PexAudio and video fingerprinting to identify copyrighted music and video in UGC.Hash matching and databases · Enterprise- Rights ManagerMeta's tool for rights holders to find and act on copies of their video, audio and images.Hash matching and databases · Free
StopNCII.orgHash based removal of intimate images shared without consent.Hash matching and databases · Free- TMK+PDQFOpen video hashing for matching near duplicate clips.Hash matching and databases · Open source
VidentifierVisual fingerprinting for images and video used by NCMEC and law enforcement.Hash matching and databases · Enterprise- vPDQVideo hashing built on the frame hashes PDQ produces.Hash matching and databases · Open source
YouTube Content IDYouTube's automated system for matching uploads against rights holders' reference files.Hash matching and databases · Free
What to ask before you buy
- What is your recall and precision on my harms, in my languages, at my volume? Not in general.
- What happens when you're wrong, and how does a person override it?
- Where does my data sit, who can read it, and what happens to it when we leave?
- What does the price do when our volume doubles? Show me the tier boundaries.
- Who else my size uses this, and can I speak to one of them without you present?
- What is your incident process when your service is down and my queue is filling?
Rules that push teams here
Not legal advice
- The Digital Services ActRisk assessment, transparency reporting, and a working appeals route.
- The Online Safety ActDuties that scale with your size and your users' age.
Keep a list of the ones worth a call
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