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.

“Hervorragende Klangqualität”
Google Play · 5/5 · 2026-09-08

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 2913636507

Proof data

Record hash (SHA-256): f52c1df96c6e02189821fc479f76d8d49003304a11438507bbe59daf2137c026
Signature (Ed25519, base64): +1uPUDRuyiEzesZ0GRxOu3FAzluyTR9YH8cxectNLPp3OqDW0W7psIrsc25MqeVkA7qbeIl19cXe/kGcqwbcCw==
Merkle root: f26292e960b34f73f9768b4afc64585e265549d794b35b8167826c2bcda92ef5
Merkle path: ["f52b8bbd11552be07a6c49f8c5bffd3dfa20bddea514c2673c0d072ec1f07752","1659b601e7aa7c0aaff5ad8b7d05496ca1666c70f5b24c4e2f81538448fa83f8","91c249ff89f32b5cc7f38d6014836e27d202e7b7144622a94a3b7e2d2d8a4bcd","1c0384dfaa5d0a86a1b9ea479f0f15f772eb0f01de3b58a7668daa52f5a56b6f","db1d0eaf612bacb6bd2b9a2956be63d35b6822b3a9cad75b091c9b21c2c9ec80","02592cfd79cbb48fb0a19129c053df497550161cef1a95d326c62d22021d6608","f925af0aaf15104c61451d414a6c3dbad45c99cd80be51ad8666d320aca7608c","c07ddb0769d16a05d0295af663aa0ba4766e0d9f04a5504133b4576eaf79c3b8","ebb557dd34e6e875733009b8d32d8e282d534978ca44370acccf5798f97ce520","17ad0239125ae9322f172cb6e4d509e68a368c516403bb54ec27f0605eede0f4","9ff13387f341dbc2eddddadefdbb37fc18503156ecaac4f303831611bfcd3945","00085cc83f5b1ebd23d3e94cfd5dfd530d487c8d3d3790ee5d04eca3b55eef30","b763ea1ef84637e764decc45acddfba68cbd65e2d958f57cfeabc8af53520b04","a616224c7837fee9e37cf9dfa53b6dc52945555438d928215ead84ba8ccc7b57"]
Anchored: 2026-09-23
Public log entry: search.sigstore.dev, log index 2913636507 · entry 108e9186e8c5677aea51…
Expected log hash: 417fac9b806377ff48d30ded01faf8424eb98406df713fe2564ee9077747e6a6 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":"v1790070376053","kind":"published-quote","locale":"de","page":"subtheme:deezer/quality/streaming-performance/de","quote":"Hervorragende Klangqualität","rating":5,"review_date":"2026-09-08","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=deezer.android.app","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 (f26292e960b3…), 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.