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.

“Für mich der beste pdf-Reader”
Google Play · 5/5 · 2026-02-04

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 2515095234

Proof data

Record hash (SHA-256): 63364464a86b1c6fe609053e324d5d0b7db4a1904c17bb787d6677f86ee972a7
Signature (Ed25519, base64): xLU01FXCvzIL1Ff4n0okXwvk8nIDQ1xE1vzrEKU/4Tz3PbPiKaL7cCWL+dnILu85PgjjXIb7jW/vKZk9HA+QCQ==
Merkle root: d9909e7ff193b610d96d9930fa8111baf2fdaa08b732478b03ded2b9e1e52914
Merkle path: ["633a771ec5a20a9201c24122d3cff5d68b9e6b7bd104985138fa2a09902bed5e","ee535b7a84fae94d0f70458a3c09c1766a1700ccfa5ff3e191ebc8f659dbc655","d3f689423bd817f1fc191871d9a273995cbe8448a516f06817e908199f3c1491","6cefb182b6112361269a4811ecd09d6c65cfe70a60d5b3a8fab7382f9478caef","aa9ed9ac2558a0fd677844ee4f3bb1dffc866f26505ba7d42da3025daa224b4a","ebfa5a0641402603bbfa18b6051be52ac58b9422a6a3a5955e77ec5e89785d3c","388c7c762ac371f5c0708100e55964b94c3d14167d8d485f26a1f801685a4c9b","18bf35f07ce89b9152973297e4cb99dab42ddbb3146545be1949d6ba2ceed464","e724012d13c1657c07d3dba60e5dd933c1450f9208dcf0b8997e32bb45289265","2f00b5fa5bc1550eefdbada9ccce84ee28b0f44473abae104fc117c4142387ba","cb4104b4b931a214a37df10d9c46010e7b5e27bb9f4781993d96a03f62eaef5b","9674e4ecef5e17216d02256f30d1a12e9bd64c829be82392db2ad16d9e944e26","fe512df538f31c12d9084e7935c17aa095161d0611453d225ad85718977c3370","fbe51c186e2797045566a65d4e8ac09d80335ed84733c00aea2f32527a4eb0c2","2aa33c224957c89d7d414cc43142ae7c4368efde4f1a1b6051ee910ab17bf997"]
Anchored: 2026-08-19
Public log entry: search.sigstore.dev, log index 2515095234 · entry 108e9186e8c5677a299c…
Expected log hash: 6f0abb2e15f57da153d99eb9fe756fd2540bcac51fcddbf7ac60c4be3cfb5f7f 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":"v1787136684512","kind":"published-quote","locale":"de","page":"product:xodo/pdf-editor/de","quote":"Für mich der beste pdf-Reader","rating":5,"review_date":"2026-02-04","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 (d9909e7ff193…), 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.