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.

“Nach nur einer Anwendung”
Google Play · 5/5 · 2026-02-03

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 2542443729

Proof data

Record hash (SHA-256): 734be9d5d706202b0aafc7ae5a521286e40bd66c331a392cdfaee0cff5710c30
Signature (Ed25519, base64): fODF7GIjXKzOVN1TkrGdSSz9B90zPDVe4TkkU301SRv11gLqvsm2NBmrjMXHIqvVa0y8VizR3UfJ9h/7xgcUCQ==
Merkle root: 4354cafe0e2ee66c200238a4bfe005f997e761de26d9e528ed6c12dfe1b33129
Merkle path: ["734bef9ebf9ad4dda417fc5a239f39cb84f5d6beee9843f43d44ea717396f8a1","4796aa85ed3d289f463371a43f801b24df6c4c68ee6736456ae29d85741d9069","967c5d31aec21dec6d36a17ffcbe595218c5eba8f4436e7572593f8f27c0bd51","ade695b7c99ebc22b74b78072c4a990ebedaa441bf41dcb11f86741a6d797139","a5e52a75b144f9c2f352add3f9b281c18399714aa9f5ca7dec86229a106065c0","7a109eef6d65bf1ea9ca74233c181ffe0cc4c611c353428d089288d556d3f9ef","d1c91506ab4f0e7a28affe06d647f44f20ab34eab6b936e68da8df661da50b3c","3454172fe2de974bf89896884e05f9ce79fcbb31030c477612aaab28ccb33331","9055f00e65869331ef72af92031e033fe6ba89248a0137670d99f163ae01f32f","0a04092cdf6cde17a05ed488bd71e0660beb94f40014fe674ef98e674cd35ef7","e3c6b69f4b9f811a47451466917bb91860d7250365992c0df563065e8b50835b","562094a4371f74846c5c87c1bfbeeabaa173cb62a761690ee55d6e20f604307b","58001a430d202986e5fa4168d8e078e3b00d2bdf639864028966a0604dbcff6d","eb13252a020300a13cfcd1aad747dc15bb314823d4af7c0fa17270669f143f49","16ed4be9ece293c235c5510e2cd19a05055f034548e73c12f8a9947de7b32591"]
Anchored: 2026-08-21
Public log entry: search.sigstore.dev, log index 2542443729 · entry 108e9186e8c5677aface…
Expected log hash: 1f12c9d846c7a9fd8aeda84057eb4d8f639bf78886a62c6290a2a60cd48e0812 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":"v1787280389476","kind":"published-quote","locale":"de","page":"product:acrobat/merge-pdf/de","quote":"Nach nur einer Anwendung","rating":5,"review_date":"2026-02-03","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 (4354cafe0e2e…), 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.