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.

“Must-have tool for handling documents on the go!”
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 2514013184

Proof data

Record hash (SHA-256): 764bdd2b1a13b01551ff82a79064c87bb6ad2375dfd3ef609bc674734ab5d471
Signature (Ed25519, base64): ImnmT7j7llCXJUKd3KttPVG/gyOa6Pp99GcObqeVFDj9ILsuX5yfLiPb/OW/eoFw9FRXB+3f4P0axh4PjZvyBw==
Merkle root: 677e672fa444dfe5152ab91687c577772e13723ca441b5c8063508daedacfe44
Merkle path: ["7643c9aba66aa558722ee9e700954dae5ab45ae7ffd752b14b59bdb3a2010474","70b81fec0ed02e993add8dc8e03221993f1fd148c53fcc861f3fe10e8aac7834","52a1b4ebd47ff597cff0c59e47a46578de568abb756fcfbe714070db0607a714","6d76cfd98d9cbe161e6b347ece9f99c868c132830694f8b171648e87bb48ef1e","834db19dd50b984a1a909721481edd96bd41de28beb43d168674a9be3fc88f8b","e9bdf9d108ebabe8c01d18759d8a4a0a03d49a87e8bf7531e6e527f0bf359beb","4e26b8ba1be2fbe0d04e53da5da7247863fd182d25752dd5a329321b620ca451","fd2f5bfab109ef4230c271d1b89bf0ffad371aa016e88f891774796ed3d28731","11918d4b67908582e8d3ef0c89cda704a0cc17ed9d52671e9e74f56fe1857c21","6acf80421541fd8dda851e0b26873dffc5999480e23cf220a6919cb7444ce9b6","64c82effd738e049809b71299e4b97a9aff3441d90ebc8474d655573ddedad59","dfb2e8953d9209eec2714596d39881de17af35f886ef0bb55375ee5a043837e8","ef65dd9ebfc0d3ef62099f320670e0ff1ffa0aefd392ab7dbd6c1c6483d33d7b","3e9df542f4415cfb7321e531014c29668083cb06fd7805d6083ebd6b24fa289f","188420cfe03d9830600dc87f84622c41659cea53d9b8db8954bfc926ce1d4dac"]
Anchored: 2026-08-19
Public log entry: search.sigstore.dev, log index 2514013184 · entry 108e9186e8c5677a6b00…
Expected log hash: a596e5a342226b61371cdf76b5c8be8e37a3d00e7ffe8f7b0b550e1a8d1459dd 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":"v1787122978040","kind":"published-quote","locale":"de","page":"product:acrobat/sign-pdf/de","quote":"Must-have tool for handling documents on the go!","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 (677e672fa444…), 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.