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 3239939960

Proof data

Record hash (SHA-256): 29a56ddebbb849c2174c784a77ed167640789748bf7c6967ad1451ef43212990
Signature (Ed25519, base64): jlidQC7MMjSfV+ANl9CkUyjUxcDWt5m53N1tmgTZGTrLP8K59oKH8KUeQEjz0dDOoiG8uYBEiC/9RtMXsdidAw==
Merkle root: 954962254ff2eae9503796c02bd08deefa3a5722e4ac0b3981007e2b9ddd84c7
Merkle path: ["29a930dd099d2c2e03eceb23accf5250dba91212729eef6858dbd79ce6b130be","2179f3f55043d95966a440d121cf1a41879ca5009d7e7eab384eb76f65a3e1fe","472dbbfe4dc9919076eb728527d8d2e37e1f3badda567dc7db84f32e76f710bf","903a25f866b5a63c3a0c4fdd02b99aa4e55e531aacd5c111767bf8d9a75523f1","aeb2620620b9ec1bab01a144b2c3840e09a32d8c6e0e10d217ecde4090fdc997","ce8d7751093543c8f363cbe19d7b548ef1e29b77ca54bc4a121b43573dd60361","3d7acf5658bd81117a6b0a625e95a83c37fd21b6befcff67906c9adf7cd80844","189f8137742a98e573385294d0e7159b0d00591a94e27824d361451caf0fba9c","881d5e482790c8f5478b9b503473f34266eef057124f91c7000ff66c298640d8","59de50fe3959bbe8e6a1ddd7cd952499aa6c91fb37c542a74836cb5f9755f3e8","a4dd75e23af0f1258e45b84db6627eea99f30a1657c6dbfb9ab7e1aeb6c7d199","fde62d346ca93fe6ab586e87195f181c2c9b2ffa2c14b8bfe557af9f131263eb","07b2ba787804bc9fbb84c73bed76b7f65ff1b8c1694261a8264cf5f3209f315a","e7bbbee54f729cc449b73bfdd383c96b7b180e618c270037b5697f1fcc75f254"]
Anchored: 2026-10-13
Public log entry: search.sigstore.dev, log index 3239939960 · entry 108e9186e8c5677a0082…
Expected log hash: 28fd9464b857a07e61931e67235e692cb8af33d7541a60ca163756a54a64e9c2 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":"v1791859824762","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 (954962254ff2…), 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.