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.

“A pretty good music streaming service these days.”

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 3273174405

Proof data

Record hash (SHA-256)

2303683265cd43bfdc1beac137e9692ab25ee9701ec8e8eaf62648e6c6061090

Signature (Ed25519, base64)

ifx0GBYohV58G9AgwlnWkCQRBoUuvu2ght+pRZJR1jw8M8FZblbS3bZS0ePkqe9Tm8A813CbXR7l6rq2YKG9DQ==

Merkle root

a69839899d35e428e965dda22faa8c37ab9f1f9e8354c5c301a0cc1dd97ec994

Merkle path

["22f149dd60808a0c167d5a5988f5098f419de9a89f51c02a768fba2489d6ca3c","4c69cede1cc28cb221f08c60a42686d2ac06a38a2a98840f52b5462f2f1eed4a","cb07c54ece1d1e39c0dd88f0999ab93b54bbcbf30951998d7246fb62e3cd785d","a4d93bf21d8536e296e02585b125be47961aa6051137bae448866fefbcda23db","98ba2b177a13febf2601723cf38ba02b25c8aaa73795615e1a629b50a2bd5aba","48e14d117fc8973d694a6de69a083960a73fde8168c324ada8554f363271f5ed","8337e696870b8be0b4b13c4ba3cf6ff59728d09374bd7ed3e60a2f42f159cb27","8c7fce14fc5cc91fdb0e8ac23f4f0782438d1906c305eec09f8cc31e0113f396","8caef692a311dd3e74941ea7110505b681afbb9274c42180e4524c4a70cdca87","00a8ae3dbef283f1f2ff2ceb33124ea1e51cf34bf52bd8f7e4e06cfc1e910923","ff7277eab9fccc1be5838f9d5ebcf9f1572e84dffe953d855ef70fe521412a13","48072dccf34406d20883cec701fce66bc2705f5d4c15636c2ca8b10cf03adeb2","c91b6bd41b0d77873850967d2a33b58afe5c9b2077c41a3bc5e3eb1e0269e91c","baf50621c43237ae6460207428b54bf7432b36069b72ded7c303da6c80c67c5e"]

Anchored

2026-10-16

Public log entry

search.sigstore.dev, log index 3273174405 · entry 108e9186e8c5677afa7d…

Expected log hash

a8603da072baf84665c1f8a43f623ad1abcc708773f195fc7b697ae45f09c136 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":"v1792120797404","kind":"published-quote","locale":"en","page":"brand:spotify","quote":"A pretty good music streaming service these days.","rating":3,"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 (a69839899d35…), 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.