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.

“je suggèrerait de mettre l'App gratuit”

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 2514602687

Proof data

Record hash (SHA-256)

fc4d369546f89c6d7b67e6d6656e11a97f13d4c4a6316b4bd183fe002533bb6b

Signature (Ed25519, base64)

HSSGsppAg7mxRnJHzqMdIj4UtN+UaOzedDDo+iTxwwUWd0SHPBbOzKolhiQQ6EQ9TZEv/X1nXZsZ1HxNWLE0Ag==

Merkle root

749703591848535a8600340214debbd99b61273e3bed402bec28b292f90ce9b6

Merkle path

["fc4e7f6c07fc3fdd4ed79a215508f160b595a0073ced6f01cf40072b131565a4","6fb4ab56e36a2c245f0527e860803fed7fa7259e9ac9eae9f663595794b31699","4cf6aa36997175895549df5f1505fdffc4390eba16f4ee8b456585fdb56fc3b2","b134f14e28d2e7f5f69831293b84d09fb1dc338388875af31acc4a0f444c46b5","36f5a0665b86db8e7227f0452bc7db132f363dae0f842c13f2222c352e35ac61","359604b56d16245b221410d3d14de143025cf8b00b18700dc0542087405faaa7","038a20882d707890329098f781131751a733c39d6be8deeeaa2a4a0175f223a1","5fdab375575b3caf399641cbc12aa38d11873f93b4cfa4accc7c6c18c0d47eae","4b5b2110871a1c0d5c08dbd739bbcffaed8f6f325f06cb136dbccaf1321ea9a2","e4ff547fc6648b9ad412e098cedbde92a4e53e87530b71079c341bdfc78733e3","eab016dfa7b6a9ee374296f384c3b1d0b28a3ad665ee07caaa1713b144cbb786","28ed7302481a09a51b52609aa599cb1db4784049fa122005860d9c3f9a7188bd","3a5f53ea444f142a988f6ae277939cb6eb91c4ff0e850e312adbb60ca7c4d1fa"]

Anchored

2026-08-19

Public log entry

search.sigstore.dev, log index 2514602687 · entry 108e9186e8c5677ac525…

Expected log hash

e53e7f935eb508100ef1046b60c784e0bda15dd54afae176c275a97cf1f64052 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":"v1787131269839","kind":"published-quote","locale":"fr","page":"brand:threema","quote":"je suggèrerait de mettre l'App gratuit","rating":4,"review_date":"2026-07-17","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.threema.app","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 (749703591848…), 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.