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 Premium ist ein Luxus, den ich mir gönne.”
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 3220562278

Proof data

Record hash (SHA-256): 22aee5d61a9f7279ac358f9851ba7695c7b8bb9bde6d21964660b2a6d53ac4ed
Signature (Ed25519, base64): PVe8P+5m3LJj90x1PsMFaOni1y4jJUvNtuGGQmuaBsNk8XFhpOugXYPLs9HtcSRRJhbUmay7Zz7I22hmmEBrDQ==
Merkle root: 2d214bb14438515f4bedf5edd9b00a6a5113a016ba9b9fe8160d41d7e6046722
Merkle path: ["22b0be7d7755acb42412accd23708646b93797b96d1b0cade6ed3326a35d887e","41788fa8008ff626751350498fc25382e517eb1950530aa2aa6f5c04bc7b8fcc","02529aaa05283c22601eaa2b122fbb85c0c73eed99d9c0c3cfea1c5e02dd42c5","16d4e35b67dfbed94ae03b813f212ad930ec578d6268eb72b2b9e44028f19e39","3765715348eb33efba7eed61c633e2028f2d56184e76fcbe231ffb62068b5c95","338f86f2c76b846c63bf8617648da156e3157b7c4c6e1dd8061f7348035eb9ac","afcdc741152be2b96e8558780e18e8a06673f8da6545cca320bb67e61b1d4e89","fe1ca6dcacb4b47c9499af35937e2a12403268a9369f2cfae56dfecbfbf8fcf0","ab4eb941e2ab130733a25104c15e55f30b2723439ac276e335ec4beef963e155","f3cc4b4aee569d06e4a2cd5598187bcac7bd666174164b7e458fbd80db511fb3","6a765946c1eece595050f2a8d4bcb7c1c60c0ac38183d2bdf49521706099e012","98b2364feb69697f9c170c6c8c253e875bd2ca5af1617759a81536a90cf6f664","c8e78357eabd343df2a6d1ad8a9c122f986bc772443ab896b1e0fa855f0ebd28","35ea2df06612b261a549235c4e62b3e1ad1789f05da56f9ca671421e5071b72b"]
Anchored: 2026-10-12
Public log entry: search.sigstore.dev, log index 3220562278 · entry 108e9186e8c5677a2753…
Expected log hash: 13907aa3d3da271016c4b5e75946c4440692c6b4e1684187b965dbb983b157f7 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":"v1791777669660","kind":"published-quote","locale":"de","page":"brand:spotify","quote":"Spotify Premium ist ein Luxus, den ich mir gönne.","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 (2d214bb14438…), 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.