Quote verification

This proves the quote below is recorded by Citatio exactly as displayed and has not been altered since it was committed and anchored. It documents Citatio's crawl observation; it does not imply endorsement by the source platform. The quote links to the original review.

“just found out that I was charged $30”

Checks (re-run on this request)

• ✓ Signature — Ed25519 signature over the record hash, verified against the public key at /.well-known/citatio-signing.json
• ✓ Merkle inclusion — Leaf recomputed through the sibling path to the anchored root
• ✓ Public transparency log — Sigstore Rekor log index 2541942774

Proof data

Record hash (SHA-256)

ff8c0a7a2d2eaa5deef160d45e2a322ef0ef8cb9c3afcf776257e5bcc45c0780

Signature (Ed25519, base64)

0eHcBDOzSf1Y3hCXEpuGhcV9gpxHhD2w8CYV0uytLm3v2O5xlGeZeHgLNcE+y2Uho/2yhjlxRrFe76NVJIvmBg==

Merkle root

0fdf8a945cf322eba60395065bdb38bb3eeb32c52e065b6c93c48bb56aa3bb91

Merkle path

["ff9191409512a6ef2743cbd819464fb84060d3726eed2f8e31586b56337693c9","950f0f43057111cc7c49920ff697d7f426cbfb382ce917e272f157e944304f26","832d961ab1b523947ae8824b7d21f3ac51dc63b8cb55f8bc387e48e5a6c0cb01","f532a84a4f74e5dae2430f569ae5ee8dfef54cf22188eed7bd06cd9f4cf59d7a","10135c91bc868ab7aaa8ea648db88e9c445a52be5b779c08a6c4de9edf0dc63d","704dc03bd6af66c5c4d9a3c1f6bc56b33a31933834cda9df84c79beefc72b1b9","36469c15c9e35eb90f4782c665ad5c60c519bbdde163af3c782ce03b6f10fabb","dea64dab57a6c53969ec2eedac7e2d65d4612d6a5bd047b99150d0e1f0eabe61","35f0e8451f7e68be5c9eefbdbe96b74ee443546634aa36c7f9d982590aaf6ae6","1dd5c867a33c54be1170a7ccc2c4ecd237a04e44188420e38ee9c3c7d2fb0338","9df2bf9d1d071ae591fbe5cbeff73846c3d5554d23a78779c9dda4580ec264e2"]

Anchored

2026-08-21

Public log entry

search.sigstore.dev, log index 2541942774 · entry 108e9186e8c5677ae0bd…

Expected log hash

4825ba618d3c3368179be13912e101812df871de37f30b1ec256ca6d987713ec The log entry's spec.data.hash.value must equal this value: the SHA-256 of the Merkle root string above. Recompute it yourself from the root to confirm.

Canonical record

{"dataset_version":"v1787277864570","kind":"published-quote","locale":"en","page":"brand:luminpdf","quote":"just found out that I was charged $30","rating":1,"review_date":"2026-07-29","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.luminpdfapp","v":1}

Verify in the public log

1. Open the Rekor entry (pre-filled with this proof's log index).
2. In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (0fdf8a945cf3…), which ties this proof's root to the log entry.
3. Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
4. The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
5. Locally, without any Citatio infrastructure: SHA-256 the canonical record (must equal the record hash), verify the Ed25519 signature against the public key, and fold the hash through the Merkle path (sorted-pair SHA-256) to reach the anchored root.