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.

“wenn ich ein PDF mit einer anderen App öffnen oder versenden möchte”
Google Play · 2/5 · 2026-08-11

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 2543700701

Proof data

Record hash (SHA-256): 7c25c9fd9448b7860e38a0bccd1dfffa48128681b9057d34fb5559069a348ebc
Signature (Ed25519, base64): qZ45yjlYzvB/bvpSK879reE0nex4Nd0/trevqM/64KukWiWhyql8y1D/Okk29Q2KfQALoGhmEwZapRTdL2IrCQ==
Merkle root: c921242d78a65e026e3281000ec5ef04ef930758058c4fed3f79f3b5ef992cde
Merkle path: ["7c2381fe3825362910c662210f80cad24f5b456ac970c9b2988d5b3c34c28682","f2402dbb1a7a951286c3685b3df8c61c409c200a5de0fee969b3cb8fbf844eef","b3c8bd1ff367f21463bebfe9b3aead4dc59426ae88cf0f848d9dc70769e73add","ba7683c6897550605e6a833fdcd5111c3bcd426c7def2c3b416fd1bc16131fe2","9c4a428639b0b8f044af45d65ee3e11dc582d21500372b8e56161e642e01e5ba","a37cc44ef21097afcf27d84f88742b50f4bca2f9fc4022470bf224636cbeaf8e","45c43ba5f81e2a1d8541947f0436629296f3e1de7886a9bb6407ea7a2851fc85","601beb15c1a8415eacb748731370dbdf7dfec2489c5faeaa476f2775c2b7ab02","db7a54c52f1ed80b8e8acac775a01c014d131ce64931be774f310f4c8b9dd1b7","a92b947d01b449834cdcd30fdd620d4406ba525d8d56cb2160fde566dbf7b3f3","6d3ef4172d2c7754d7907f4a99a68b915d44d609d2e29431f505455913e596b4","c637c7014cac1955f240c5eebe8b532f7cfb5f80696451d630ec93a7eb03dff5","6b2632561b59cd0b7b7d163c35b619821251fc87f905afdc68f4b8821607ceaa","11c55b906d5338fe2597d0d6abbdec07bcd15a81c2687346b92acf8d9db0c2f7","522d5a6bf348351e5632579ca190fcb390464957ba4b4698b399695ee13b67d6"]
Anchored: 2026-08-21
Public log entry: search.sigstore.dev, log index 2543700701 · entry 108e9186e8c5677ac7e1…
Expected log hash: c1abaf0323b08bce2cedebaf1993162920ee741ace8973292e7ffdd13aca356b 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":"v1787287374804","kind":"published-quote","locale":"de","page":"theme:acrobat/service/de","quote":"wenn ich ein PDF mit einer anderen App öffnen oder versenden möchte","rating":2,"review_date":"2026-08-11","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 (c921242d78a6…), 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.