I tested ChatGPT's PDF Content Credentials: what survives a re-save, a print and an edit
Disclosure: I'm the founder of Atomara, a PDF forensics API. The files and the code are public, so you can check every result below yourself. I asked ChatGPT to change the date on an invoice it had generated. It did, and the new file still carries OpenAI's signed statement that ChatGPT created it: the same manifest, byte for byte, describing the version with the old date. That invoice was one of…
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