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.

“Sehr nützlich für jede Reise und jede Gym- oder Lerneinheit.”

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)

b8d6b10154161dc52aff3bb74dcfdd0aaa8ff7a8bff24ce4177a15fe84bd9e2a

Signature (Ed25519, base64)

5GAY/vkT7f1hGnBfUUrTFwff8y8mwBhdu/t5az8+Nm9uuroirhai0/AlYKKaGm4rVmBT2fX7VWi5e9knaK23Aw==

Merkle root

784ff8fc3c42eac43c7d399f0d67bba55d28073a7e106789ae0c6c3f5ac9dcc8

Merkle path

["b8da1d6561a951023f9dc6c852ea8657926d8727cd8bd334f63f89dbb1f3a9f6","ca3e921a297584fbf5ae3e9dbd84781c21d058062c5e6994de1feb72815f762a","ee8f2863b74e529491bfa43e28c6b34375be2bde51a364deee0bb642e8e68f83","16c9b80bebf715ad1ecac66cd7a6892826abbf3b2179f4bb9d7a60e06c7bf975","361e0830d37e84aced2895ec012bf1db3822e619499493abd80199b19bd5f321","d87119bd53307dabee0722692ed86f1c9ab4b8bde41877cbc73f3d8201d59398","c651bb0761013dbee10bd9c6e2e6fffdb7698b9112d8f6a04b3e551f543ca6bf","6da944b1d664dbad6d2f2945ef55b943315b1b87b95f28c741ea392d8767f049","97dbe58ca68c39d791a9f76679b0c7c3668f4be8e06547a89c649dac1539c6f1","315f8a9b22f96d2c449ae6ecd6ad8908cb98f96241a32df5de43938429554ca8","e9bcf7843e756058220fe26c523fea7d58485ca0415ee2cb20e18ae207dbc975","0201c983b09fe2a6d85a2aeed3685fb6092ba44209b47a3544cf19cc36add4be","961ed00308b1bffaa9d4958ba201b674cf19653b91d35ecfae6b978cea02e075","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":"Sehr nützlich für jede Reise und jede Gym- oder Lerneinheit.","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

1. Open the Rekor entry (pre-filled with this proof's log index).
2. 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.
3. Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
4. The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
5. 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.