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.

“Diese App wird mit jedem Update schlechter.”

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 2579439915

Proof data

Record hash (SHA-256)

1712dd6bb81bbe73945158f90afea2285e1ff523481c675ceb14f859511be74b

Signature (Ed25519, base64)

XQQ8Keye6tDFdCRnROl6l6GHR3v26asZue6B0/S8Feg6ytCjkBL7vaVYBxz8XTOa5uu520z8JD753YHOgrGvDg==

Merkle root

17f5621c24e3eff18a9eb7bd68066975964859abb177620140d484c818bd5279

Merkle path

["17171284575a413b0a64c511b5e7655952517a14658a5ebeb96c99a584c704bd","c44475693bb44f056adcb5f45aaa28483a21d51a921af6ef367a5c05c6ab2da9","01c3b062ad49169170a0dec7579eee250fc1aa1af9557c01ff072fae2f4049fe","5e7898e5d141364e4004fa16aa5b09e095302f431e22e93da9a29ae3b1a6e628","da872e63da36c6eaf419155de1f5b652276259acb5990401550d4b276cffee97","61d3a8bb50552729eac71de2b7706a47b70ae1dc9fb90f3683c361fd11c9e492","0cf9433ea5f63953157902779a3b88ffa85d7fa0655ab4f0322ce40e7576c7b4","a0a6f6013721c8ac7b13ffc771984e0eef68853d5ae75155a4dfe8a953417fd2","3e08f33034323cab1c2d4565a79cf214dde2de9015077c5d8d466690e0e7f69b","d45420dc161d566a3e606fb413ef156bf94fa5d5f4c3f7247194e5a9b26e71ac","4ff7f58674f77360a47cbb5674357871fc79d038c63cacd20c5da4d21091e9be","e0b1951729c99fbb01de815b31b388c4e1893e038f596c642187fe535682a60c","79be0fb1f5b41c5aba25203027289d744232254bbf10ab32b1815d2c378767d2","589b0bc49a2f8c320bab032e186f6f9156dfac35cfff015dffeba8a096d0654e","02fd17cca8bdc04921d1d0245205fa97c0cdb96191365c231d548c0ad4b381f5"]

Anchored

2026-08-24

Public log entry

search.sigstore.dev, log index 2579439915 · entry 108e9186e8c5677acb33…

Expected log hash

a5a7b749ed8256b8527671a66249deb9067f26413922e3ca3f056cbfae182396 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":"v1787539629003","kind":"published-quote","locale":"de","page":"product:acrobat/merge-pdf/de","quote":"Diese App wird mit jedem Update schlechter.","rating":1,"review_date":"2026-04-28","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.adobe.reader","v":1}

Verify in the public log

1. Open the Rekor entry (pre-filled with this proof's log index).
2. In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (17f5621c24e3…), which ties this proof's root to the log entry.
3. Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
4. The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
5. 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.