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.

“It's really great listening to music on Spotify”
Google Play · 5/5 · 2026-10-08

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 3241341297

Proof data

Record hash (SHA-256): 39fa4d81db96d62b9200edf2a67e507cb892a3974e0c35244a33dce5d4ddfce0
Signature (Ed25519, base64): Azkr54MTZkDD1F00l7ZN9q+nQQG0IxLE4AFj29xOJbCFttLyfM7GFrthguv02BMdEw/oa8aL81WW9y9zEjUEDQ==
Merkle root: 4900b1080bdcd3b4c9234f01647614e7004e0a1ae01ead44968e31abeab33265
Merkle path: ["3a01463d32cdca8d21729a7f931f0e29b7cc86ca5287e0ee3d3ba8500a661e38","efabf5d12c1450e2a89c8aef42cf60d9a20db48b2042db12479451bc497cb653","cf2056cd74030b8543e5b1f7633cc8fbf1313690b15df277cae41d64d1238e35","01ab6e5e51ef44882067ec7d1b79c5ecc615d1e3241df516bbf89e4d04a3554a","3736159324af0db42d0e7d2fde7a670bf023a93d09f71f7f6d7dc51f46bf5953","66b70bd108b6c640d0d21515d5eb44d94cd29a1166c77566cb08c73c2f663e2e","5dc648ad12016c0edf14432ca87c5ebd09200c29dae38371fae792eab12554dd","498f27f378220c84f54ac97da0356ac96300abfdbc58e1fc552b652ff5951156","b20a6a1161b691b0fa5116b26e0396844962fbc1352eff8b9a113d961186ca1e","ff75024565909b231f6c70b84b40b3ae508fd1588a4da2ef1faf7fdf773959bf","a3b74b17f9cd5d406e0b7770993216956a787a080b4312b3087d7ebb01d83d77","1a39eb8110f60cca7b5d74c4b4e1ee494aba4bfcd1f4082136542cd2a427ac26","acc667d852c71a0e84a086ab20f7bbad3d8ae083a1e44cd20501ad641f662bdf","0a4842003c61f69c5923b6aafd56426e7fe934e483f7d15b620c07fa61f89152"]
Anchored: 2026-10-13
Public log entry: search.sigstore.dev, log index 3241341297 · entry 108e9186e8c5677a0e53…
Expected log hash: 39342fbb95f8cce5be4111719e5450984494edcdff99b8bd9a5c0d2303b67943 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":"v1791866192176","kind":"published-quote","locale":"en","page":"brand:spotify","quote":"It's really great listening to music on Spotify","rating":5,"review_date":"2026-10-08","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 (4900b1080bdc…), 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.