How do I prove I made this creative file first?

Creative work often leaves your device before money or credit arrives: a pitch deck, a design export, a product photo set, a script draft. Later someone shows a similar file and the argument becomes “who had it first?” Screenshots and chat logs help context, but they rarely identify the exact bytes of the file you claim to have made.

What a dated fingerprint actually records

IdeaProofNow computes a SHA-256 fingerprint of the exact file bytes (usually in your browser), stores a public certificate ID with a UTC stamp time, and can write the fingerprint into a public operations log with optional OpenTimestamps / Bitcoin anchoring. Anyone with the ID can look up the time and digest. Anyone with the same file can recompute the hash and see if it matches.

• It records that these exact bytes existed by that time.
• It does not, by itself, prove you are the author or the rights holder.
• It is not copyright registration, a notary act, or legal advice.
• If you edit even one pixel, the fingerprint changes — stamp the version you will keep.

A simple workflow before you send work out

Keep the original file somewhere safe. Stamp it before you email, upload, or hand it to a factory. Save the certificate ID with the project. If a dispute appears later, the other party (or you) can open the free verify page, enter the ID, and optionally upload the same file to match the hash. Pair that with contracts, messages, and platform records — the fingerprint is one technical brick, not the whole case.