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.

“writing notes and changing font size must become easier”

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 2515439294

Proof data

Record hash (SHA-256)

66448abdb87d47be96a3b1fd09554b3b3dcc87e0bed06aea59586ce89ed20e1d

Signature (Ed25519, base64)

fGmK2lOCmaYul42mmcxFQfNmAI+6K8r0FhMsWTWMSh/efuPGhJmhrUBIS/5NdbcQaVpgYpzrQZMZeBag1o1uCA==

Merkle root

8c6268a14330d1a3403c561e774645b0671f81571ec1735d4674ebe1de7502e8

Merkle path

["664544068d4ec678ea4b2e1e72b262f319fb7c36f5bb0e34f43d35242b841353","2b6916b22c225a5b2d782cf5e9425d6cae5ab94f01a1468cbe6ddb7331350d39","b463371e4e5bea7e2ffa2faee02bf37e79ad4109f93fc231f53b444e844df429","19869ffa2a6f33dcc8e63ea27ed75b27568a4cf83c6595761fe0171d4edfc247","3edee1b0e10aebb884c0ed05c76f1a18e513a785c96a6acbc22ec5bffc0849d6","0abf2e13c475813d38c7efc2c7a63c1bc54b03f1a3965042dcf1362ac3bdbbb1","fd4837a4b91a300fc5040784424d6fe4a4be1a8e06c0983c0b720b6d15205f57","025af68998f5ba4b6589cbfcefea0da5d8bb0f52bea8d98db77c65ac1e4e3cfb","cf80f7df8e70106a86cbb09ac00cbf8f608e79a99effc062d097b27c9edb8de5","0196eb412232c07b983038168d46e9246861ff41a2a9bc519b4842d41d8092e4","873250fda75b72c460b3e95ffde7dfacf27ca8c77ebce7d2f139ff75027e1fc7","da59334afa2d819633e90b55a7c9b28b3150a2ebd2ea3f870365a1df4a927c16","747ba0b6317c3750e6242affadccbda44b868489e275092a024dce997ae773a2","3a0d3c267d2a0d179768ecef7d342dead457fe1d4866ccc6b84c72a8362e4b38","f548939ab1bb46e2c6638c372c3e2eef0d561ad18c63c15229fececc951e0b3f"]

Anchored

2026-08-19

Public log entry

search.sigstore.dev, log index 2515439294 · entry 108e9186e8c5677a4f15…

Expected log hash

128701fddbb19410bf57cdb2d04d7a0278d13bcfda6410d76f176fa58341e1c9 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":"v1787141082461","kind":"published-quote","locale":"de","page":"theme:xodo/ordering/de","quote":"writing notes and changing font size must become easier","rating":4,"review_date":"2026-08-08","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 (8c6268a14330…), 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.