Where did this file appear first?

Drop a model file, or paste its SHA-256. We check the registry for every platform where that exact file has been seen and tell you which one had it first. Hashing happens in your browser; the file itself never leaves your machine.

or

This lookup matches byte-identical files only, so every line in the answer is defensible. Re-exports of the same shape carry different bytes; those are matched by the shape fingerprint inside the registry pipeline. API: GET /api/first-aired?hash=...