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.

“Beste Nutzungsqualität”
Google Play · 5/5 · 2026-07-10

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 3198797320

Proof data

Record hash (SHA-256): 19aa83f1b475a55a3e5a559be46c1ac1f440b119a5eb0df7c34de431acb79fb3
Signature (Ed25519, base64): ljfJz8L/jQ2ucUdrSzOjifDJ418YUcd8qgbja0t2NdE28ZaFH7Vh3E3kNgfMD+2PmEF518P1x4q9lerP6sBqAw==
Merkle root: 199738dc68b66dcf66f6b0cc77e2cba74c3bfda88989684620837b4c4e64818e
Merkle path: ["19b123b1736e5c5dc48e14ad46e6c284688c17481f0b56a1a36a7a1ec65760b7","0d4920ee0a26c8a9c55761b1d412336d85f4d22eff75da55fff014fbcf9fd6c2","1c39294e39f300ce4a15090d85d2cf25512212294507a8ec71570784ddc8ee8c","f35196c60d81d8643997b382a2f9d8ab522cd230b1f2811312bb80d523a94174","060b142ff739ed927e71831cacb2ca19e9cd862790bb2381fd20a4d61419c748","7a370615a085b4196139988486001c940ca574e48b92a81027685457aeca036a","0b4d415389c8010a2c433cb9566eb014a271e1c33b312cfa1a3771eaa7c676ab","f0c95c49d9c07372cdd45e82493cfc619f14a0f6d5a6c0ba916e57b475d880ab","d3305bc9b5491628edd74020a8e9f35854b8ab0156cf5f7427b900bd18fde0a7","1b71f6f217fe1129478608107159e8d15bf6eedef4573ff44358ddee524e2b8d","237d92539dadc5c229398abd4613f475072d6788bd28bacee8b5bc01f400fb10","86433dc4e5776691731438e65de2d710dae3d65c747d632e0e4f67a92455b646","89c2d1ad10f8da8a1ced326bfbd1f55882866fd705571bc337258b3314dad42f","ddc8a66e59fc8f0934334cf08e419f621290129e658cbc58d8ec27bafd90b0af"]
Anchored: 2026-10-11
Public log entry: search.sigstore.dev, log index 3198797320 · entry 108e9186e8c5677a14ba…
Expected log hash: 46227e67415cdf5b62c43420eb8b7a80b35acaa912410c2711787f678b77c9c9 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":"v1791687727006","kind":"published-quote","locale":"de","page":"brand:acrobat","quote":"Beste Nutzungsqualität","rating":5,"review_date":"2026-07-10","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.adobe.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 (199738dc68b6…), 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.