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.

“Kaum Werbung”
Google Play · 5/5 · 2026-09-20

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 3163352270

Proof data

Record hash (SHA-256): 9f1ea68165ee8a66f9f150ed254fd908fbe564afc766cb004b114a83aadb864e
Signature (Ed25519, base64): hQ0jhKIhOXTzQA3q0PFkb4EwJjc9e895x0zBRFc9DRThkcZO5g7EksYca7xuF7sAzpu2VbJVmljTWujR9d5gDw==
Merkle root: 784ff8fc3c42eac43c7d399f0d67bba55d28073a7e106789ae0c6c3f5ac9dcc8
Merkle path: ["9f1f8a8fd812483d00272cfa9b5d9f500acdfdd726417593151eae411ebea5ec","b92e95a4bba8de1d61ac75c938d13e888654bb41f531caf11965952fc28b5803","ff5cbe44149a4bd2f0b93983a5c0ff6afe352a251330170607885cf71f12e3c1","f1c3bdf5133c766410ce4615186aa3410e6a74c294def72f64f7469e7a9c1bf8","bae21510e1aeaf60812ccfc9cf3c94d7a87e11463bcffcdb6d17c090263cc29b","ffcd85526d264e3a7432ec97fcf721c57223aa57e732da4d26caf4a4a9a5a2cd","eafaa32b0b77a57c90b6b9a42cf3b4e2d7c722adfe800110bb19bf4ba8b56cbd","2f5e8e2fdb84d7cf600551df56355a0bbafd3d93d04c3214e979267b2cb7b7c0","7c0204edebf9d9081560a3660411ef7b1d938474ee71fef56d04d4bee1425593","62ca87da36a148cc174eda94452c7cbd91d32a2ee4a08397f9b83e25431351e1","41b07996483df33c570c054eead34069c94034c5e435d9ff8e701bb328f256a6","134cf62fa4457be90fad52ade3693090dc3bbf86989804f0dd255432e5eaf7ff","76d400188c58a939fb5674b0c9b84ba0bb8d5bb91a670efe6d7087f7cfcad90b","c0acf811319c30afcbe8b77293e97c6cc46544f39bfd9b01931c88a06aefa19f","5fa09e3847513934bffaf71960ac2a100e20422698698ab1e19a4fe8ac133514"]
Anchored: 2026-10-09
Public log entry: search.sigstore.dev, log index 3163352270 · entry 108e9186e8c5677ad020…
Expected log hash: a3ae0badac804d14d314abd0e71726d06a96c43a3840dc1d63acded9268c461e 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":"v1791543790412","kind":"published-quote","locale":"de","page":"brand:spotify","quote":"Kaum Werbung","rating":5,"review_date":"2026-09-20","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.spotify.music","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 (784ff8fc3c42…), 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.