A Signed AI Video, and the Bug That Threw the Signature Away
A Google-signed clip proves in cryptography that a model made it, and our engine read that proof and reported the signature had not verified.
How detection actually works, what it cannot establish, and what we measured — including the results that went the wrong way.
Every factual claim traces to a named file in our codebase or to a source we fetched and read. Each draft is then checked by a second pass whose only job is to falsify it — opening each cited file, fetching each external source, and cutting anything it cannot confirm. Our own measurements always carry their sample size, and we do not publish an accuracy percentage for the product, because the firing threshold is declared policy rather than a figure fitted to a held-out corpus. Where a result got worse, it is recorded alongside the ones that got better.
A Google-signed clip proves in cryptography that a model made it, and our engine read that proof and reported the signature had not verified.