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.

“the essentials like basic viewing, annotate, fill & sign, even liquid mode are available for free, no ads, no internet, no sign in required”
Google Play · 5/5 · 2026-08-12

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 2514602687

Proof data

Record hash (SHA-256): 18c53bf51b3f454bff76ab50adbd6c2ee9d96de33a7c0a30cc5d3f2d05594c79
Signature (Ed25519, base64): pnTeDrWvTEEuwxxzg2uBUEhedsB2TMogxMRb5k8sO/34amjgfpTY5K5QtnL+DB25idmbdxFCuN2uigDRJFLhAA==
Merkle root: 749703591848535a8600340214debbd99b61273e3bed402bec28b292f90ce9b6
Merkle path: ["18c77b022fea5419b04ca6645b0e57e489453cd7f1c45a3211351718e778ce7b","3e944c87251548dd37cf290c12256f2ae23a5bbaf49febd7ab614ed2418eb5a6","00834532626afb9f7ce3a25608707995ddbc719597c2f1d6bd5358892f594a62","13be375b2151af38134d3dbb610a7e0690ae0f74bda9fbbb608dcbf5d0d1c068","9af2322c9e2e80ecef8c3661f82d1d22b3ba0e7e5f1af52b915bf2e73156fa81","1610a54a1cb59be6e1d3da64f92e9a6be84ba1564b7ae4d528de98990b46768c","85eec8c26ee9d695214449d8c6cc5d3f1c1100a3d1b140f27417a8485298eb17","aea9765a392cd05914ea10b2e526b0b86fe86db2ba18da352b77a0f7691953ed","edf60ec8a43a2c681a75d05c6a9302550bbe31a508410440c7d3aa2a314e0402","46ed007f0e947aaf7c197cc7b58ab0bb2f0018a5a58d21026f25d4276efd4a90","a27b1f57d7d3ba9b269bad0997dcfdf2d2c7eef8da48833cc30914137a79b2cf","6b2689b2dd9d3b8915415d64bbb92b570dfbd3aeb47f24a3313b9dc36c6a52b1","34c0dfbb126009f4c79d4469e45bcea801fec7d101a7b81a66d8a0095ff6d708","f43a1936699be5b728ab2cee5100b0cce7fa6828f7bb521f1ba149ba44cd48a1","bc5d1d560a30e83fe0f1b6a9452dc46dc135b1a7f73575ec3aa5d459bb76fc8b"]
Anchored: 2026-08-19
Public log entry: search.sigstore.dev, log index 2514602687 · entry 108e9186e8c5677ac525…
Expected log hash: e53e7f935eb508100ef1046b60c784e0bda15dd54afae176c275a97cf1f64052 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":"v1787131269839","kind":"published-quote","locale":"de","page":"theme:acrobat/quality/de","quote":"the essentials like basic viewing, annotate, fill & sign, even liquid mode are available for free, no ads, no internet, no sign in required","rating":5,"review_date":"2026-08-12","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 (749703591848…), 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.