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.”
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 3178115911

Proof data

Record hash (SHA-256): 77cfa7188139fd418b60f48565e26083f6a294bb7b8319c382b2a2d355c33a5d
Signature (Ed25519, base64): QxDjaf1aykLhdnagUTbIwkhRtw6XOSje9siRh8E83cUPMAIZxOpBm3FQWCd3x5TDBF+E3YCiyi9+UrGRt2r2Aw==
Merkle root: afb9ffbb4b4e88017e1c868247f919ebcfe69f09127d391e7daa08019eb2b63b
Merkle path: ["77cf604564d29a69e61a49bc92349f267a84c6e62dbe32199c76f6c5f89a8842","163efbe7222e6eb4368531e446829552fff8e9e2dcfd912b136f41021420418b","409d67814c80ccf67543e801ffa6313c74477d8f361dbad30f6e4b0f67ca8afa","9078eef378203dc4d782b517ab4a31a36a313fd79369941b2bc9dae999c70c87","e799d10d2d17b90cfc501b56bf0bf1c743c64d546639fffa91ee120b14f5f057","32afee936c04363095ddca7c4e0a7bc02830fb5e1714b8795cce713bad4d53cc","9b55fad148b6adf65caed93dc0d8fcdc719a3d3c5cb3856f2bb3ac5202578848","caf9aa4cb6e0c5af0bc9db3f028d3b5834fd32d03a06972357a0c8d6b05363b0","2fe924e7ecfc4d3a14fd23c22ed6c00b29928d9779f61533d9886153b4c78c98","449c4ca537bb2bc2a1adcf09ca14008604d311b4650a11a7ab3d76fe39eab8b2","01e3961c726f058410b4aed4785c777abc676945c7d2761625085a28f68ac84f","3adb37cc20bae46d15aecd43630c6202a7ecbb5a45648c120a2e3ddd573da4c3","cfc6855eeb5cd3bfbc64cd1a8365b676fdd5adf536ee2637beb35214ad734bd3","15ecb20ce6559654c94b8b858c027c014996a92eb19771813db0b794d6214fb6","72bbc4ee0a973113b1d556f76d02fea2c4704794a0d313a96e49ff7b6174dec2"]
Anchored: 2026-10-10
Public log entry: search.sigstore.dev, log index 3178115911 · entry 108e9186e8c5677a2bba…
Expected log hash: a144ffc32dfaa9fe45b4895b7f4c17280667152868dd8de227ca2811c60c870f 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":"v1791604579182","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

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 (afb9ffbb4b4e…), 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.