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.

“The contact within the app was also great.”
Google Play · 5/5 · 2026-08-20

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 3081458408

Proof data

Record hash (SHA-256): 57c1163f88e216c4f15707c966ee1e718930302a578dec252ea2103ad5131779
Signature (Ed25519, base64): rxDp+4e+tS4Zpv/dpTaP7gVlWCP7CxCurn4zommo9zQdcXwDaxUpUBltRYQJsKESQvI+eeqkGHdFzawHBKSgAQ==
Merkle root: f2e4180d5a0710e7663a4b79dbb50303bd6f86e3a2b406f14001987f705300d7
Merkle path: ["57c10e414ced0c0e46299acba36ed8afec6017c9ca252dff5787820b7671820a","b6c0c781c01b716c4dde75015f55783377871350f33290357899b8209827ce29","29ce97ad4a8313a26863a932a8cf43284f4c6fd841543cb002e8dcf80957957c","10a441db4ac4e42b2251f0a1f05b92cda0c25eeee0552b98a2c66f9843cdb957","3d8d0bf9ae3353f223cffa7bf8452ab8a4857b394fe67d67c775edfb18e0bef6","fe76379b2c735e1f7265be3a1fed46c7fab421a695245d6359f618c6b3b14e4e","30f63178519a6d448129c067dc740c3b5ea92d51a1fe59a9f97b7aea1dcf53bc","ec88243b68996613f3a68d8124f154f61a36702fa38cf20172655c11d91c270a","6c0c83abdd85af50ee0dc6fe8241373a45aeca46771b95c219c6b59163e679ef","e8149fc256ae61ad56309f410d0435d602a75446de30922b952b4f67fe62ad6b","97382b1245e09df88f8f247f8aab038c3cdac7f7d7470764c2737fb0473a5e12","59b4fe84b0389bbbf5d48d9018a49011060ff6129dee067eaba929a94b0cd084","46c87f9a08f1f246fdfec5275340122c6fc82f05348c2147438d88f4190e91a4","2e5c89ae9ab7dbc565d9c1cf67eadb6709ebdf774f99038c61564ed1fae236de","e9f01260bd0385751f2505473f49304ca5856588aee517e499b7a694c94e66cd"]
Anchored: 2026-10-05
Public log entry: search.sigstore.dev, log index 3081458408 · entry 108e9186e8c5677a9490…
Expected log hash: 083ecc94bbb96677ba7c17fb105e7b1917457374ba5e9cc48c412762603877bd 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":"v1791172602574","kind":"published-quote","locale":"en","page":"theme:zasta/communication/en","quote":"The contact within the app was also great.","rating":5,"review_date":"2026-08-20","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=de.zasta.app","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 (f2e4180d5a07…), 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.