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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:…

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  1. 2026-11-09 12:26 · DEV Community — AI
    I tested ChatGPT's PDF Content Credentials: what survives a re-save, a print and an edit

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