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.

“Selbst in der Bezahlversion tauchen bei Podcasts Werbung auf.”

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)

17d54a1ebf7259301a466fcbbf6253ec6293bfe08d0cffd422acf7839ba39da0

Signature (Ed25519, base64)

PP0tctFY7f7CW/cN1N7ZJm0XXYdawSUysy2GD1YqCQciZN36co8w6vkQ0C8qXRIpSuDpWOy5KlF8Q98hz4A8DQ==

Merkle root

954962254ff2eae9503796c02bd08deefa3a5722e4ac0b3981007e2b9ddd84c7

Merkle path

["17d6e8de4c118d02fda8e5bf7f54e80e8004038aa639e85b46f0b3b009cbb839","11342e3b5d98921bf131956845b7a8bb321bfb3e888b6921b926b121ddde2dc3","6789f7c395556e7f259ebdc68a97d281bee9a9120abcb2077d8ad2f4ee2e733b","2c27ca87564522e82212e5f8d19ee1fe20f5ca5393f495e5232c86e5f26fa78d","5bb138a6b5e248d3fef60f4ff41641a4b8c68a9b4eb18d1a579c1af95b1df35f","406658bd6a3f598e7e12b906ad782fffe8325f068f67cda94a8684eedf74b0d0","fc2e4f4986bd55bdd551dc5370ca4f6ed9927b9681db0e64badd7068f3050e98","e16522948a8fc1d221102967ce1fcd605cdc07b614bef49624efa8333c522994","927652b0503d514a95b821e0da01134108e00a31d2ddcbcfa806455e1106e76f","d36dc94326cebd82196e74b3e20a9f7d219e7890d1fa4a313d92037293bc835e","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":"de","page":"brand:spotify","quote":"Selbst in der Bezahlversion tauchen bei Podcasts Werbung auf.","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

1. Open the Rekor entry (pre-filled with this proof's log index).
2. 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.
3. Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
4. The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
5. 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.