Check a file without trusting Saakshi

This page is a single file. It works in your browser and talks only to public Polygon servers, never to Saakshi. Save it, and it keeps working even if Saakshi is gone.

1 The file A recording, photo or journal entry from Saakshi 2 Its proof receipt The .proof.json saved for it on Saakshi’s Verify page

A seal proves a file is unchanged since it was captured. It does not prove what the file shows.

What this page checks

The file’s own SHA-256, and that it splits back, byte for byte, into the 5-second pieces it was sealed as. A photo or journal entry is one piece.
Each piece’s leaf, SHA-256(salt + fingerprint), climbs its Merkle proof to a root.
Each root was written by the EvidenceAnchor contract at on Polygon Amoy (chain 80002), in a transaction that succeeded. Only Saakshi’s relayer can write to it. Its source code is verified.
The receipt only tells this page where to look. Change any number in it and a check fails.

Everything this page does is in its own source. Open it in a text editor to read it.

Blockchain servers

Public Polygon Amoy servers this page asks, in order, one per line. Add your own if you prefer.