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 3163461995

Proof data

Record hash (SHA-256): 9e22d6f43a89d558828ce1d784ae8d9fa67a87d6858cf9104fc206d1aa3c2582
Signature (Ed25519, base64): qZymd9vzKB5iphB5QdlnBAKoJ1qVEScu1y1ivD//Cfbr7oa/uLcW5H3TQsOMPU5+ge9PODEyGDMGsP3B5X1hBw==
Merkle root: f2dea3193623a59d18b4d230cf1484689c024b05d34648a4bedfef78c47360d2
Merkle path: ["9e26b2f20388b23b514d7b63bd8b96239fd148cd463eb7c60585d2ca7959f1ec","b11ecccc8cbacec8eb85b8609aa50104f61479a30a971c58edd0b81d8925a27d","19c6bbc4cb49662ff2b171ea2d8873be6106019bafcaf5f1816059655a3f9462","3ec275a0257957cc536616996757305961231b99290c891031b3642925d9c7bc","48a138e6cadbdff8ce53a8e7b6d247fa2a9850489536ae7c548ec18286b63021","0005122d3dd66ab26b3626e1beeda07834da096dd6b0ffeff3530ca9d3c83248","868478de627ceec0c4ed3f9a57ec32d3102844369e422327c156a21235e947f7","0d98b6e00420633a5cf33042596b9c17e77299ae27bde2fc0a6a9aec0be411e1","7b7b47f0183d9fc965c3f655913ec070e6f8f25c2305f08ab6811a8d41210975","df6e27bed33c7a55e58e2270b70b58982fc4f5cfad70a3287ee27842b6b2e3c2","5b04ca805b852c8e0d8b8e61f0750d21a03c7a120d4015dd55fe17482974a97e","26c4a536d56c305fd598b8283d148c389f67714b1ee1403c093a304865323edf","d5b457cbd06c72c301c050bbc18735716496080f1e92d458625264f50eafefeb","3cd750b45485739a93e8e5963aebbe2dbf3f2cd6fcfd5ac889ea2792f103cfff","658fda4333b0a975ae51c0ef52c37c157029d897878579fb5ff3ac48198b1bf3"]
Anchored: 2026-10-09
Public log entry: search.sigstore.dev, log index 3163461995 · entry 108e9186e8c5677acea0…
Expected log hash: 1e385e1035f15f3dbe860bb8f3e4e850b8c2ce2b31edb58c97be626995a4adf2 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":"v1791544610158","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 (f2dea3193623…), 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.