hupsub
Copyright Registry Search
Check whether a song, design, or image has already been registered on hupsub. Search by title, content hash, or upload an image for reverse lookup.
Prefix match on registered certificate titles. Minimum 2 characters.
Exact content-hash lookup.
SHA-256 = 64 hex chars, pHash = 16 hex chars.
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We compute a SHA-256 and perceptual hash from your image and scan the registry.
Your image is not stored.
What results mean: A match means the exact or a very similar
work has already been uploaded to hupsub. Exact hash matches are
cryptographic duplicates; similar matches are visually near-duplicates
detected via perceptual hashing.
Limitations: No match here does not mean the work is free to use — it may be copyrighted elsewhere or registered with a national copyright office. Always verify rights independently before using third-party work.
Limitations: No match here does not mean the work is free to use — it may be copyrighted elsewhere or registered with a national copyright office. Always verify rights independently before using third-party work.