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 3198225546

Proof data

Record hash (SHA-256): 22fa66d67ac9e3ccf9787863e57e725efad5610c74c483ceb06fbb67c30a24cd
Signature (Ed25519, base64): BXKpAJmHv9zsfc5DvTyOuLmtW8kQU9x+PnRNlTq8koYB4FHkquw0u1cuS/pT26hi5JLV4gLLgQEME9vooS1OAw==
Merkle root: 12764493a64961d0e0d426bbec64b837c2e35bc22a58920afcc56db07df6e8c9
Merkle path: ["22fbca7a3c75fc981516f6476b62de40879c1c3e066d0d6b7f7cb4572c365b2c","97ac91e5834c3427a617a43b7231cccbb62eec9f1477644c79ac712106f250c4","14f7c0b85c198847671fc12e661cdba965e618b0cd0d793c1fa3a84379a6ed3d","a8dc72017f3d11e05d942f575de89e09374bedfb040e8f1a0b0c551b8f6bfdd6","e47e7476789b103716b1a572a303f81fdbb435ce33e9d7f3c406ffeedc1d1fcc","f4a29bd3154f29abf79fcbcff4ac81b04db071d6cad140a20be0e9af5bb98747","3e3d8f2654774e39a90c80d8e25a0d83e90a46268e4ac6e496965d4f991ad85d","191d5c4f6aefdc13a7ce4757e0cc32475130bd11823ab56c44594a8d50396952","5a32293429d99eb4e854cfa3c25b8c9d8a2a99ac2ed7705583da547b9dbf47ab","7f3a3ec57a790cd251c2c1541de865bb8b81facceaeb8bbc6dc9226325304147","f21ff959a638ed664bfef10f083a14e62333d41f01bc38bad0e058c79273a381","b52a8a3015ae5229f5a7205f9433251f53bb2b22b2f3bb0bfbb3deb2076f2c89","b6c6b7aa75be4fd4f206793d7c98702963f427cfe45d9c46972416cafee9a131","bf01790763bd70681430a2841b8504c59b88918b5b88c9d70f6ee7041d7ca6c8"]
Anchored: 2026-10-11
Public log entry: search.sigstore.dev, log index 3198225546 · entry 108e9186e8c5677a10cb…
Expected log hash: a11b46fc63b94f32c49058752856fbdc4e92f7a41d4e67238e3563657fcd50e4 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":"v1791685609571","kind":"published-quote","locale":"de","page":"brand:xodo","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 (12764493a649…), 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.