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.

“un support utile et nécessaire”

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 2515144749

Proof data

Record hash (SHA-256)

67cec1d294bec9c8706869550f0139d26fcd0c801ad9faefd115485fd305e94b

Signature (Ed25519, base64)

i6PZOXOvFMrSXapG0ONRz1xnMfEn6pKXT4uvOQGug4145z8ldh+2B/ml8HR/AbXxI4qeXfS7Ux3iu2JJJlcBBg==

Merkle root

8a6ad893af0f0bb6c448016a777af61f3f4935afd82df0db132e64f813535715

Merkle path

["67d1087bf3f080dc4593cd36ccedf44256e408d0fe3348c4c650afc8e4527194","a89e829d9fb424a4ea07a3e3c6fbf5e0dbf79dec8719331a5dadd7f91dfcd02b","c139d6c59e5f1dcdc520d5122ba4abe3d30442c416b093cb31a86fdf3f25cbcf","f8982e230aacc9cc995ccedd72c51b6e49cde9256168b2ad41a011392b0a6082","645058fe88bad3157295f5922ac6ddd4ac3a434a17c93f0bcb017ce198709393","4906724ae1a4105fc8b2807714538bbd9e2456f38dcf1180fe176466091b21ca","0353813e13a600014c316dcd8f21cf814e95fa773da37ff2db73a0687064c56f","9474237765f1da7dcf28d05b4a5a4b2dbfd2080d34e1ef393b698b862955c1bb","ff7892b74954c20b3ebe6eec2d43d36798192bad1af25cffbfc4ae46d3504855","346e65a4dce4803deac2e89c6024d9f4e04bb0b058711f952cc8d46d615c97b0","347deae23705298f19e27fe2cff2a93fdc043dcd4e4d83db60f6a24f8a5abcef","3fd28282483646e6d175334fffdcf877a35d8aa4f4a3625c1e161c6067d9b015","5284fa1b0195183d338070f05d29e0d94229e3402263e30318e4f273240fdf18","95de144e054f717eac0f186a52d131e0ff4674147622cce8cff3d2611e7b6e99","8834edd87c11ce9424175f1744f71345038aee1c5b6f350a6f7bc2a49b63e8e9"]

Anchored

2026-08-19

Public log entry

search.sigstore.dev, log index 2515144749 · entry 108e9186e8c5677a63b7…

Expected log hash

b6b79ad662332330e69c4ef135f6fb13ddc70048f846024d496aaa533f7f7fc0 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":"v1787137589246","kind":"published-quote","locale":"fr","page":"theme:acrobat/service/fr","quote":"un support utile et nécessaire","rating":5,"review_date":"2026-02-02","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.adobe.reader","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 (8a6ad893af0f…), 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.