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 3273174405

Proof data

Record hash (SHA-256): 1e1f5e10d97618febf600544967d0868378f419fd13641bc37cbde0833a635fc
Signature (Ed25519, base64): C7GesX6v7qI0zw2DS6pVNhBR2JtDbfH3BETagdfkv++A4BOMD83XDviobxMzr4q8RyMTBaVc4+cNOcVFV3TBAg==
Merkle root: a69839899d35e428e965dda22faa8c37ab9f1f9e8354c5c301a0cc1dd97ec994
Merkle path: ["1e2a60b3f3e0b269ab2884e356c1c8a5e67925b977344bde5dbe1a44d7012417","0f9852f811eae23cbf440eadcfed436e41f348ab0c402dfa477f7d86dafd987d","1c1b0a5b99f50462c2a3783275f6802cd31aece3dd7fb4023622700abad7bf4b","08d381344e5f6a7ce449d48816d90d2b1c17245c2dd7c210068a51c2d96411ea","f35124f87e71f1c02120286a6f75ad1ce67239f707cf11295d935b33a1d922d6","04e1cb713bd29c21b23c4d02933acd1f5210799fb99a20ae49ab812ddc651da8","8d4fce8cc9916863ce5f13c8d5b69c46bc5e558d77dc88f0b1b0dea18aa476c3","c4a107f4db4b10ebc26bf15bd64d9e94dcdd6c6967170d9c0e61b8a7817a88c6","cc8346aae7c7121dda9e61e8a8e3c6905d4c3a519c55d3f58afa26797e0a45de","00a8ae3dbef283f1f2ff2ceb33124ea1e51cf34bf52bd8f7e4e06cfc1e910923","ff7277eab9fccc1be5838f9d5ebcf9f1572e84dffe953d855ef70fe521412a13","48072dccf34406d20883cec701fce66bc2705f5d4c15636c2ca8b10cf03adeb2","c91b6bd41b0d77873850967d2a33b58afe5c9b2077c41a3bc5e3eb1e0269e91c","baf50621c43237ae6460207428b54bf7432b36069b72ded7c303da6c80c67c5e"]
Anchored: 2026-10-16
Public log entry: search.sigstore.dev, log index 3273174405 · entry 108e9186e8c5677afa7d…
Expected log hash: a8603da072baf84665c1f8a43f623ad1abcc708773f195fc7b697ae45f09c136 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":"v1792120797404","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 (a69839899d35…), 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.