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.

“Why is a simple feature a paid option?”

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 3140475820

Proof data

Record hash (SHA-256)

235733337b107f5580fd0e3aa71b9161849cdca2d550a274fcb1df27ffaee607

Signature (Ed25519, base64)

G1oV5pi0+9uolzJ2sGcZAlf+7wzS/ykaEyntBFZAacuddgfa9QhqpmIjScZ0kSrP7fCBp5WR27xpT+lZjpoKDw==

Merkle root

52d6be1abed15ebd0724a0e1a493d5805e1ea49ddcaf8e9e5584928cd3e4d759

Merkle path

["235a5808bbf5be68613afd877f46db55fa5621eee50126d40982780ec404d88a","1a7335e850f7e235412565cfd615fa357f7d04235ee7d902614df3b3b61bc5e4","da153287147c3a9dc427a442b1aba6d5a826940deed30677a8bb419caa01df53","254b87011bdb6f310d121b851f4a301a65f3869ba77c752fd64c57fc9520499a","e8420e60d34414eac5edb88fb4e552da163588613fe88f1c778f2196a0979b3b","a5319d6c39ab89a10ba4491fe33f6a55867fa30e10859daf492d670c0b23d13b","d8a43f54a997230c4afc94acc394f096b07a83cb0aa7991681a20e5cd4b2cfbb","89f43011a0c0325f34384bf5e23e6d46238ead13788510e2e21be44f7ddd6f18","47a80d27fb7cedf325b4c3f62783bdd44d22a95554d0f8627b546254101a6008","2709007dd13f460c6e4f2ad55b1dde693858399154b34196655e7b17681e7397","a437720993ec4985609856ae1c85cbcd5c53dbc31d843b17c065f80b440d470c","5b7aba07a854e6a63765c93fc2c2098355f0ab59d7b4659a94baac072cc8e639","7d5e1a3da5381843d312196fd4a9f69dbe86b152542df1be09d403d47d5e49c4","71d5ef7f970539b9a82546e0bdc1b1069245bf71351875f786a78e5550da4e15","b72fcc24171828b3fdfff6be65bb433d37b8e51a187739d27a216a784d84cf36"]

Anchored

2026-10-08

Public log entry

search.sigstore.dev, log index 3140475820 · entry 108e9186e8c5677a78c2…

Expected log hash

bb68bef30792bf00f645df162a48943f770bc3f026216a44dedb4651c8ac0917 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":"v1791431489246","kind":"published-quote","locale":"de","page":"brand:xodo","quote":"Why is a simple feature a paid option?","rating":1,"review_date":"2026-07-31","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.xodo.pdf.reader","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 (52d6be1abed1…), 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.