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.

“Zum schnellen Bearbeiten von PDF auf dem Handy.”
Google Play · 5/5 · 2026-06-04

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): 668d8534bc705d9c60159c33f3e1f855058d17f9c0bea1b0536dd2421ff2bff1
Signature (Ed25519, base64): E3RdoiH5Vq/Hn5CEa+id5ej3sfSJQyw0pYOZCAQ8Qo3JkNT8uxV6T4HlvT+pOjYAEfB5dO20WtpVo2Lg+ghNDQ==
Merkle root: d9909e7ff193b610d96d9930fa8111baf2fdaa08b732478b03ded2b9e1e52914
Merkle path: ["668c997958c07265f9a6721221fd847799222a8091a53b00f294d66ef5b7a974","e286e4ac166eab635835cd14aad4bccc40a8214de3622707245100fd9633fdc9","f1c445882bf9f6fcf93488f28575c659505632999551f155b65a9cea7a9a4044","6e3cc47313775f3997b8f5aef9ddf75b2833f52fb254b9e8a5a34b7e4cf5f180","7aff997cdf5e7517d2079418db0824ca0ce864acb407f1566c5e1a209b9f8f7c","c9ddc7de759481c51247b4dd324d4610d10048a6a4eb4ff088a340f1995ac471","6c3a3cfa602fd7773a1a2008ff086aaa594bf7e18e66bfce6e8e8bad54f544b0","fa6e2961ab6e5b338c5512cf21ead002747014ca6c24dca00c087181f830ead5","3372e8617d852f168d304df877d86078509e2976d46b569b82d7162dfbae9ae8","dcb4386f9fecf0f29e123d2f5995e5a5e0599e6183070f81e2473b086767e66f","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":"theme:xodo/ordering/de","quote":"Zum schnellen Bearbeiten von PDF auf dem Handy.","rating":5,"review_date":"2026-06-04","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.