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 exceptional especially when paid for”
Google Play · 5/5 · 2026-09-20

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 3199295725

Proof data

Record hash (SHA-256): 38e192ed772cddbf1060f77b3f3090d1c8bb7401059b652c3a2dc83830b2bef5
Signature (Ed25519, base64): P0e0VtCKbw3DrrrUlkXPgQUeltfJ5fD85ZTDm/J4edsWTp1a+o6z0DnaLrKMQ2gKx7z9VgtMjlQS8HWwBO8rBg==
Merkle root: cb5472fa7b7f10b7453a4f782a38c5dbb3d782ac291369ed3830c2ab783a230e
Merkle path: ["38ef8d25b49d254b839b9f3212d5b486135fa3f402c4185a08eff85cf0690b1a","71631a1cdb24f607cb55332f7b803ca8a6f1b1dc1b541fbe8b0ed248c5675636","d8e5e68fe516953b16d36abda8e08dd7ae0addd200331782c14ad16b5c09ad7f","0ef805dbcc1efe1f59136b2b9e408782e44b16d7cab20b41ee1a2d53706268f8","1849d2ce97f1e4f614c6dcaf5e8d9c27c777eb9a430311c316fa4255e80fc3cc","dea5e2b81ca94d9a1f0b2ffdcd0eb62d56fc3adc5dec81f16f12bc365f50b1c0","557f6ad59836d1e4d4bcd54203dd338fd3f9d4d202f4f2122daebd09966eae04","deb6e56fc626c1450bca97813705486256790f498b230190a222093ff7550c33","8980c67d91d5a7c7bef12a7a4db42a5df152b082bebedcaee636518cc9ded3e6","aabee3b14f386665462b6e8ae67abc1386302c2c4e9ed94367d9a8cac3be49ac","00c82bf6898ae1023baf085d881a80a498168433424a5928122c7f09262ab69a","6b52b30eaf5b97885456e54aaa839ef0900f8bfbb260e6f22cb33aec9a4c66c6","67ef19118472e8cea8d8f9c7960df416625b46d91fef63f2cb0306cda5833746","6ab0f07aea38f551fb6ed4456f21bf7c468ab54859dff87b6772a51601755f64"]
Anchored: 2026-10-11
Public log entry: search.sigstore.dev, log index 3199295725 · entry 108e9186e8c5677a3fc5…
Expected log hash: 59b8cd8284c909c35d85f443b6a086d482f8b667c56ec942d663937a75e25638 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":"v1791689736846","kind":"published-quote","locale":"en","page":"brand:spotify","quote":"Spotify is exceptional especially when paid for","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

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 (cb5472fa7b7f…), 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.