03 · VERIFY AN RPO · LOCAL EXECUTION

CAN WE DETECT WHETHER THIS RPO CHANGED?YES. CHANGE ONE WORD AND THE FINGERPRINT CHANGES.

This page loads the public demonstration copy, computes its fingerprint in your browser and compares it with the reference copy. No file is sent to OpenProof.

Run the demonstration Review the example

You do not need to understand JSON: click “Simulate a change”, then watch the verification state change.

SHA-256LOCAL COMPARISON
COPY A HASH A COPY B IDENTICAL?

01 · THREE STEPS

VERIFICATION BECOMES CLEAR WHEN YOU CAN SEE WHAT CHANGES.

01

Load the reference copy

The browser downloads the fictional RPO shown on the Example page.

02

Compute its fingerprint

Keys are ordered consistently, then a SHA-256 fingerprint is calculated locally.

03

Compare after a change

A single different character produces another fingerprint and shows that the two copies are no longer identical.

02 · TRY IT YOURSELF

ONE CLICK TO SEE INTEGRITY. ANOTHER TO SEE A CHANGE.

READY
Readable JSON
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Basic RPO structure
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Reference comparison
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Bytes analysed
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Current SHA-256 fingerprint
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Reference-copy fingerprint:
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The comparison uses the public copy loaded when the page starts. It demonstrates change detection; it is not yet a substitute for anchoring in an external registry.

View or edit the technical JSON

03 · WHAT THE CHECK ESTABLISHES

INTEGRITY IS A DIFFERENT QUESTION FROM TRUTH.

This check can establish

  • that the text is readable JSON;
  • that the fundamental RPO sections are present;
  • the exact fingerprint of the supplied copy;
  • whether this copy is identical to the loaded reference.

This check cannot establish

  • that the statements inside are true;
  • that source evidence is authentic outside the RPO;
  • who is legally responsible;
  • that a human or legal conclusion is correct.

Full RPO verification may also include JSON Schema validation, signatures, evidence-file fingerprints and confirmation of a registry entry. This page deliberately shows the simplest mechanism: an identical copy produces the same fingerprint; a changed copy produces another.