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.

“Mir wurde mein Premium-Abonnement ZWEIMAL berechnet.”

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 3240231023

Proof data

Record hash (SHA-256)

23b3602ec05b39852bff060fea1fc9d64bfa0a93c41ba9938c52ff1c84926e21

Signature (Ed25519, base64)

Y0BS5TaZP5O6ch+5kgZ+xvxBhPMxmEzAJcJYXOrWIkQ2MlRzFan753bvUydkFwPkq5zZ/4Idgqxr/Qf8hX8IAg==

Merkle root

888a38c73939ec95e6f226dbfb3637325026fcafc5a795aa4e227b811d6b2c84

Merkle path

["23abed8915421a5f0e4f5d53db034fd38812a9b303e094c6654597a78812ff01","43b0c265025b676b1d08015b92b45e007cedecc8118f889c0b59c0379224d888","6ecf3b58afc8eb16f8151b15b1d5357407391d66b86c92997f978f2ec8edb2fc","cc0c2fe52a38fac0fecbc238e0e66f14d4cb387bf0876955beee90ccce642b11","7b22d70a0b0b12a50f09b3973db19837484b64f427ea827fe59e966c0ae8fd37","820db4cf7e61affb599be70b678727cb619fe3521304a1a999a124bb10a1c039","04817f0d3b01a61bb6459c81878e372fc164538aba04640c856714d1c9f031cf","6d4e40031de65ad477ef09ce525cd9f3c02c257ff9e104a732c5c78777d9889c","5262d3ed56d3dd2f61220f1342017f5026cf505093ce78f0305d32a63258983d","afd8bff8776c9683243789cc5493fa889bbd74c8618502994b96be432814987b","36593ff6981142345d894360aba2045a8b70ebe4ed0dd9f3ba3c7292169f7244","062cbbfbeb4fd46f2079783d29fb5f6cef5c48e70dbb9c2980860cd1d92ebf74","410ad2e8ec6f218bef120c1cded3462a092f61baab59fee462fd9704d436d66b","f46648ad2fd9f2769b9fc0ba1c434d2040de67cbd8b7a61df7b7575cd5a9206a"]

Anchored

2026-10-13

Public log entry

search.sigstore.dev, log index 3240231023 · entry 108e9186e8c5677ac0ab…

Expected log hash

bc440cd3136178aee800fe49b9cf2e319542a645c9abbb8553c6ae1e354ce201 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":"v1791860805798","kind":"published-quote","locale":"de","page":"brand:spotify","quote":"Mir wurde mein Premium-Abonnement ZWEIMAL berechnet.","rating":1,"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 (888a38c73939…), 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.