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.

“Spotify is very convenient for listening to music.”

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 3240367269

Proof data

Record hash (SHA-256)

24dc579c509b55962da592048b6b0d5afe2026e4558610d5c23ca88be52efcd3

Signature (Ed25519, base64)

g/UzJbOdLd7PkJZwTcu7cXkTXlJEdNO8ixZ4F3L7jgns8KTG6kxSNupIAa8q2wBYX6t5kbsu4e3s9uYuLfPdBg==

Merkle root

1da6cf8d96c8876e66e82e9bea7529c76d7e25eda1c07550505caa1baa49c4d1

Merkle path

["24d9fae28b4fe9541a8ee247b5beaa92e445a8cfed479d143990da9a8fbbd874","144aed2a5ea7c479364b77bcbb20d2d926dac614e81c11cdfccd816263cfedf3","861e440a56eba97e7bdb71101e5c0bf32e00cd084bc4da1638feb9cd771f3394","1add5f1c5f90bb2ae6bb92b343ed5f186ab7feb8247c9957b2a434530844e7b3","4c23989d9875c1a49269fda35033a86492d059559031ee9904bf956dc30b46bb","ca39086daf0a91a50c496a1af15843574b35d22173a376284f169cb1651cb34f","e197fe4f0e7b8f6b38b9c253d254352f5898474d27d7fe88bbf1ef958efff518","4ef78c27fde6338ee24a419d4f899481991e808e8ddbfd121a044dd276f2e3ee","496d36316070cfeff809d008d0508d71d21ff4e899b37d033562ecd49866efcc","33623d033badc1e3045bda66a3420dcbc0f4457291b810654d7c274662730e68","4538d2af88491ec228f1721babceab1a37ac1f9230be10303e5ffe866b674232","ae52329abaf68e9da165e516499bae5b8b1835a4e008f4e52a7a7b160cafc13f","d0886e619546ab8e630cf9041b21d39a146861d5b7598b5044808c3537212a80","2d81003ff1cd2149e42eace973cb0f4cdd39b653f7b06a20804a1f1025023ebf"]

Anchored

2026-10-13

Public log entry

search.sigstore.dev, log index 3240367269 · entry 108e9186e8c5677acf8a…

Expected log hash

f6397ecd2b8639a3c60345d0c567eb602411c7eb1bead248c760bae850816087 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":"v1791861381931","kind":"published-quote","locale":"en","page":"brand:spotify","quote":"Spotify is very convenient for listening to music.","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 (1da6cf8d96c8…), 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.