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.

“Very easy to use and works smoothly.”
Google Play · 5/5 · 2026-08-07

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 2543978942

Proof data

Record hash (SHA-256): fdd44ee66f863729e9ea2610dbd571f30c8907010b04fd1bfc1d83d53a3556ce
Signature (Ed25519, base64): PI52d1oz3naFXSHL0+qd9g0IG09RLkqMBiKfDg1kQYcXk955XBf2j4tE/A+TA04n4bu6TP/CfiukOOQEswm/Dg==
Merkle root: 3ea09355a1b22a15fffcd33ac0d37e4039cee2896092e637dd8c4e7dfb5d507a
Merkle path: ["fdd6c853bf14505ac9cacb97a2b125735c6fa8dfaa441af3fab57db83c0f2ba6","3204d44a2f0217928d56bb1d329c0e8a024db739117e1c2edea9db6790fb9775","b0221876518e1c031a5da4c0dc475657265049e67e547e87a79866e0cd3472c1","4b83002865e21a998e998ba28e6bbb987c1d1abab9fbc98b9f02ac48a847fc7a","fd8f8954bf37225d4381acb617f736464c02416529e57a4d8e1ac7dbc2a70e7c","749c9bbb6330b1724c191ab059b4d24611f553a8889d92dd5e13e151f62ab01c","afce4c35b32aedeed40d968f2a0d7561ada66226838de84b586e2252da8dd5d8","fe0915231af2d34ebccf563fb4f9e1b998ccf704251f7f094d7bf30017eca72b","6b1675fcf1c9bebeccd85d4fbc55b41e863ab95c786f1e743bd49d9df8a5a51a","31b27d31453717be4b35465835a52677998e5ec26db9ffb6e6ac69f499b4f301","6feab94c81a1437955b6797fd4681576369ed8a023c1b93de928b749fad6f29c","246f8342235410c48ceee34de37199612052ca8bfc8a05e2509de9ef8e0e7796"]
Anchored: 2026-08-21
Public log entry: search.sigstore.dev, log index 2543978942 · entry 108e9186e8c5677ac836…
Expected log hash: 69ff2d97383073bd392d75b79533a80cb25c69be55aee7dcb24b1acf4a379172 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":"v1787289230204","kind":"published-quote","locale":"de","page":"brand:xodo","quote":"Very easy to use and works smoothly.","rating":5,"review_date":"2026-08-07","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 (3ea09355a1b2…), 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.