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I just don't see how hashing is going to prevent copyright violations when motivated people can make insignificant edits to files to change their hashes, especi
by ChrisGranger 8y ago
I just don't see how hashing is going to prevent copyright violations when motivated people can make insignificant edits to files to change their hashes, especially on text files (add a random string to the end), images (change the HSL of a single pixel), and music (add an extra space in the ID3 tag). The whole thing seems like a Sisyphean task. Any list of hashes will grow to unmanageable size almost immediately.
- nikonyrh 8y agoYou'll need to rely on https://en.wikipedia.org/wiki/Locality-sensitive_hashing https://en.wikipedia.org/wiki/Locality-sensitive_hashing and fuzzy matching. I've heard Shazam works really well in most cases, although I'm not sure whether they submit the raw recording or just "fingerprints". Still far from a trivial problem, especially for video.
- ChrisGranger 8y agoOh, interesting. I was unfamiliar with this, and thinking in terms of cryptographic hashes needing to be identical.