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 außergewöhnlich, besonders in der kostenpflichtigen Version.”
Google Play · 5/5 · 2026-09-20

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 2913636507

Proof data

Record hash (SHA-256): dd3c3684c2c7e91dd0efb6397cf693e6235dab9b84613855138b85e869cb8de6
Signature (Ed25519, base64): wRJqJC5M8bsV/hpx3ZfnrUfzF+H7IOvicttscC0g447RAF1Ai2lz6MtzGzR/qzwHAc/RIWb80K2KzYTCtzESBQ==
Merkle root: f26292e960b34f73f9768b4afc64585e265549d794b35b8167826c2bcda92ef5
Merkle path: ["dd3a6850b7a11fd88c96dbc239518e01df70c335279c94cb5a37bba3d965e211","904392fc745bf52e36bfd5cf34ec287e1845b737634e0e270fa1d4c717b94d36","e7e2e77730b86a38b009f04183734aa75b2f0af65dacdcd7c3dc787f7933f9d3","8b83a1efac90d01d6ae172188afe5d44af8512ace2ae07c29aa9111f92f57c55","77d9777066c92768e639bb3c7650d44b6774f00c3f2eed48dd312ba90e532d0f","f745b9af074f0ee3302e3f0881a158e6d1d13369a3fcd50e30308452cfc14d4d","deea0f38ee5b045b047bf7b793fd06079572ebe17d4228de726399d9786a2014","ed97a8ece83b27cf3b3def71b67156d26ad00f4fbf891c1b4b9355b7492dce23","3ea178b792fbd29d1cac94c0fa24da19bd4562cc5e47fe563e681ff4f75a2ac8","6b7014b629c4ee9cacb5d5ef0cb3379d99228594498df33208ffa710fc0df006","5a957482a39ac8356dc26bb21111830411eab29bbbb9a8dd03479b67627dbe15","88c1267a6d70047cee180b9815247bc1da5a16a96b57f3fe20a9c2533caa110d","44c8cb0eec3d4c66924c6271a9a32942cc950a307a9339cedf9246ffe3125d65","b763ea1ef84637e764decc45acddfba68cbd65e2d958f57cfeabc8af53520b04","a616224c7837fee9e37cf9dfa53b6dc52945555438d928215ead84ba8ccc7b57"]
Anchored: 2026-09-23
Public log entry: search.sigstore.dev, log index 2913636507 · entry 108e9186e8c5677aea51…
Expected log hash: 417fac9b806377ff48d30ded01faf8424eb98406df713fe2564ee9077747e6a6 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":"v1790070376053","kind":"published-quote","locale":"de","page":"theme:spotify/price/de","quote":"Spotify ist außergewöhnlich, besonders in der kostenpflichtigen Version.","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

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 (f26292e960b3…), 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.