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 3248278454

Proof data

Record hash (SHA-256)

2a0f5691349f315df44c8bcc7196ca9e06de37239c65a10cca10a3b69308083e

Signature (Ed25519, base64)

JJlTHuYBu3/+FNsVJ1epOz7Tw3tgBOKXc8tA3Zk6afIWgQy5eirxYhXloIjhyKerxREH+FgBbIg1KkrpolGRAA==

Merkle root

81db1abd6b6e636da393518bb64e907fa9c48581b44ac2be5a9e74d02608e451

Merkle path

["2a18cf4b34a1959e2de4725a2efc9d7b9c5bd1c494ad883109e0188b33b43d47","0d97e5463f1f3359864988d574f9e163c012f6321ff826412a67cddaec62cd30","4c02dd819235aaafab770fcaefdd475f855563ffa8e4672d7b8db8bc87ecfa19","e82114c40ccc232e9df0063e2916b2a8350d5bd6918ef844276dc8ac1941f4d8","2559391fe1a4a38850121d8f9e22355c630f11361791a5852aae2750a58191e4","09a92ecb6e0aa1ccd8144eadf23718867b1322338594f91b44f939cb3dfcd145","0a5b3512c71b07aeb832d08e396cb7da2344309fc4edcbda1ae2d42b7800276f","976e4c62ec2882b2f8c37f62a43b589296b0a5363701e2b16b789d4f6a493d74","e799f1f6ca54dbbe2c2d918f3a013aac89fb52ee848320d59d81fa31374ddcc2","af13f2fe41fdb8e2eb8dd9859b885ade04f53f600c200569d07c59de5b1599c8","f0d849fe2b2b2e8ac46eb31ce8ef0940645609e0ab080116168fd866668ba7ee","0f8ab31a8b7f9aa6ba4ff019c72fbe9792e5837d40b3bad40ea1cfb0cc79e40a","4fd1b36929337d346b3723be273df6d7588bc7b080f058260d538b3f309857bd","6fa310e475466f0115dd6b7ba199f23e915f2a513e2610274356ac5bd367e940"]

Anchored

2026-10-14

Public log entry

search.sigstore.dev, log index 3248278454 · entry 108e9186e8c5677af67c…

Expected log hash

4dfbbd25ce402c4821f7e2d50b18e091e9a30465f45669967c545fb71910f358 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":"v1791948368672","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 (81db1abd6b6e…), 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.