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.

“Man kann aus der App direkt drucken”
Google Play · 5/5 · 2026-07-24

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 3221102617

Proof data

Record hash (SHA-256): 172ef4e1709089a0c071b1956a7497dc99f7318e189fe00b9363b62d74e88d87
Signature (Ed25519, base64): vV32wgIFGuEOaM3+y9dc2a/ydgxd4Nq1MSWGcugfPC7jaWCCHxI3MQdorZOQtEjRt41gn0pUoRRIfmHsVaSsCA==
Merkle root: 0eabe705d05480191badde562bf975cad5c107b96758d59c47efce7f02d55f90
Merkle path: ["172aae22624652baf4ba3903ec914401d461aafebf9560e9875ba38601953c0c","d0646a2e626a249e40bcb93b391c1c80a823295546bf9b3bc35406c4e67dfd6d","122cc51a639d8de1dac17d613e821e4cef326fa0a6a42aa1581562405bdbb252","80ad56640c7a84a8e96b27bb99c341b789de538f6a0e4aaa1723f5f0235e73cd","d5b34dadb2ca64d8bf91af199759c52b3ab68e870ff8abfcf2e96f791ebe5e4d","24a20854ac8e0180fd730b856d77c2ff4597c8010a7e778400d42c2306672e02","0cabe0f83eab64eda98405097185048dcb4a0aff2611bffcd0248a43f63d8722","ff99758cf6d5e3ada92558c65ec770d9a450a41d400a109900b6b5702f0eaad1","a86583773d9eceeee0ffd38d48d323c1dd13ba4f186459e3bfc08ca68fd51d96","78957c428b63f8bbb6a19db9a179e885ae9c7800111aae9cd2e6948f1c881868","7232acd2dfdb4f088090eab03a52ea2d5aa35d51e392dac0824cf82297b6f8fd","82f5128b6ceeedb9a831b08ffc6d055ce6f4d46fcb0cd752cd3e29e60363adcf","77b2b0d1c988b3add7b1fbedc3ecc12dd0cda6044be7bb06798825ccc94efd81","2e4cbc8181996227b6c5ce6cb00a4128780f0a2cf8618660b840716e64b4286b"]
Anchored: 2026-10-12
Public log entry: search.sigstore.dev, log index 3221102617 · entry 108e9186e8c5677a7ec1…
Expected log hash: 701a9a476cb781c93a6209c8572d258b6cbf70f6f15d478bab1da1537af9506b 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":"v1791779915538","kind":"published-quote","locale":"de","page":"brand:acrobat","quote":"Man kann aus der App direkt drucken","rating":5,"review_date":"2026-07-24","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 (0eabe705d054…), 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.