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.

“Not a bad app but it refuses to save any of my annotations”
Google Play · 2/5 · 2026-03-22

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 2524110285

Proof data

Record hash (SHA-256): 691669de94962dec399336d85cfc7afa5684202361c4095d6886f1e5bac7871c
Signature (Ed25519, base64): sAqzF0WuFz1HAKbwJfyI9yIzbCWbdx27DStbckZ+44o+4BOCGGDg4vY73pWSh/wgKRDW9NYUkW+ngUdc3XU0CQ==
Merkle root: 1154a265a990612db5567445e00872656e7ced32aff0b18660887a40a375699b
Merkle path: ["691a5efda164349e908932bbdc20e45b83e79c6286f7bc88fb19ca6b46f50b69","a097d10a44b7afb09ee715b8c0b320c1c5e85e0260d9f4c7c0f755b8e140ff43","fb5919c00f75741b91f22e48150e464d063ca907ccc6b3dde56adb4d8aa52176","6ffb7fef7294a9e47a3273524525df51772ed009c954a3e0a980eb3bc50e3ad4","0fb026dc5b44a202cc0f3f04cc66cf998c651b734de4a60378bf02ac9ab18fc9","cd338caa1a9066c403ea13d79e308171a59ab5764f239e9c31ee2eaa132465e7","dc75593b10f2fadb9e1bc000dc4290354e5e0e15bb15a08a937dce1346b3a0fb","6a3c6108e51443b38a202e3ac098491931f2f0428b88fb710e1ab2e85351b107","06f3161a9808d742b5a2cc10c09eb378cd44c7ccda28c517c6ec17ff8dcabcc1","9fb81c38f924844be2f4bcdeba34ea1ca2f6c54a011b62366176137d3f091b67","450ad7508bbb470cd2e76742f0ff251c897f535469b6e6f0481ed7e8d06b6d00","8ea4b812a510f86d597b02a5c2a5c372cc7c87c60caf3660f13038a7f04f0b49","7b43375efa91b25bb70837c8d1e426ce38032262734dff0ff0d3f14b97b752f6","602297dc52019bf7e809df446e2304ee5209e9b092e15c29026ad3b8e527c6fc","8f93c563d7c563da751df1a0efbe13b6ce9bd7032eb6dd0a995c545aff2f5a1d"]
Anchored: 2026-08-20
Public log entry: search.sigstore.dev, log index 2524110285 · entry 108e9186e8c5677a87bd…
Expected log hash: 34efb4ec1aab60168b83ec62d0334b8e10d9814c0de0cc0d3569d176ff20bc2d 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":"v1787152786156","kind":"published-quote","locale":"en","page":"product:xodo/pdf-editor/en","quote":"Not a bad app but it refuses to save any of my annotations","rating":2,"review_date":"2026-03-22","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.xodo.pdf.reader","v":1}

Verify in the public log

Open the Rekor entry (pre-filled with this proof's log index).
In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (1154a265a990…), which ties this proof's root to the log entry.
Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
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.