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 ist sehr praktisch, um Musik zu hören”

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 3198489507

Proof data

Record hash (SHA-256)

389a48a67d9fe6231d93018ef2bcdc64b013f86f07631106583518fbd2cf6995

Signature (Ed25519, base64)

kqr0HP+2OITf7PgQLKnkLfRiZyXYiKx8ocs8VzlMfLWRrUSnGKsWv8mWcb+dK0ejESew2q1lw4rc+K12mhp6BQ==

Merkle root

240cb93491796b59a812f7182e64c43781541345e454701e4066e1786c286494

Merkle path

["389ab2868ee76f3d9107f13790dd5289cb4d8b0c380bb36906a61d98b93117e1","b1c983aa53d5bd9e310e9738bbd034c78bfc9536a19146e62264e6e754512384","09d7aa47eaf336a83ae61279f6818db50e96f791ca34af1c8367695bc3ea7bd1","19559fa741e7888c86d450eae1dabb376a2f1aec1f52cadcf40371a20f12a7d6","44baa56006e55429097ead2d53165176d9cba10faf5c6a93907beb23e69a09d5","dbc6b109d27c5398380a047d8dc6263df6d0a27733ecfee79baff5933401b336","49b62f969859e54be27ef9567fdc42a05c4e7bb5111d67fbf93ad0b4d34ef474","cdb640b42d87fbc5bd78a69aa39d07caa547536436926a20fb03ed40d2e37f03","914291e7df0a76c797c32f1f0bcf4cb92326da8b3dd1e5f1d080c06cd4be20f3","8d7afb0c5aa09e340550c95126e6503476bc6b438243dc7949273a1d13b08b91","d403f355aba4dd2db75e94889e9f1350403fb1a3c8e86c27b49f11976f903f3f","ec9ecaaf6ecd25e70da3b6283bf48b73edd2937bdffac512199306f1e5863dc7","7115b4e40dabe303dca48b39285385aef0729dc23733c818e0f3ca68286a3ee4","0d65160dee55e809fe06e5334fb3150d04f822ce1cb47b2ae30b5d21efdf0eb3"]

Anchored

2026-10-11

Public log entry

search.sigstore.dev, log index 3198489507 · entry 108e9186e8c5677ae5cf…

Expected log hash

50393c13ffd4f8ef4c37424a8293b422d8c3ecaf6b9593225e2bb93e0cf2c210 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":"v1791686710415","kind":"published-quote","locale":"de","page":"brand:spotify","quote":"Spotify ist sehr praktisch, um Musik zu hören","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 (240cb9349179…), 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.