◈ Learning Center
Five interactive lessons on fingerprints and timestamps.
No cryptography background needed. Drop a file, change a sentence, and watch the comparisons happen. The live demos are all local to your browser — the file or text you try is not sent to us.
Learning Center demos do not emit analytics events for files, text, fingerprints, edits, or verdicts.
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- A fingerprint for a fileSee where the 64-character result comes from, why its length stays fixed, and what a match can support.
- Change one byte, change the fingerprintMake a small edit and compare the two SHA-256 results. The page measures the difference for real.
- What a fingerprint can't tell youIt can support an integrity and chronology check. It cannot identify an author, establish ownership, or make the contents true.
- The stamp and the dateFollow a browser-computed digest into a Base transaction, see what later blocks do to it, and separate acceptance, submission, receipt observation, and settlement.
- Check it without usAn illustrative dispute shows how a real receipt, the retained file, and Base access support an independent check.