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.

“Extrêmement utile”
Google Play · 5/5 · 2026-02-24

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 3163352270

Proof data

Record hash (SHA-256): 21565bcfc26bbb4d8b020244ebf84de695afdc8fadfe6f8776846a1cc8d508e9
Signature (Ed25519, base64): kT2+BJ2h6Gg8StbGHbjrL9viOSAk7J2L12+1ASXEcqpWsfcCSuX9HGRvte8Of4LpmBBqMqSB1PhfMLtNSNdTAg==
Merkle root: 784ff8fc3c42eac43c7d399f0d67bba55d28073a7e106789ae0c6c3f5ac9dcc8
Merkle path: ["2153fc78156495d7fced05089c724bf1a87e37f960f74343b4176faca9d892ca","c7f716bcbab1a78b4161ea26405a7f873ed396e9572ef0b40e731f22582abb1b","cab40c3770200c7c6e9714c4ddeca732ac86fc402f9a69dc188e569ef0ed63d1","5c05b399e3b528833115e0f4655f1051257b28b05ba0668950549eb9c43d90fe","2f155ae0f006f764eb1ad85a7fc2da74d502247cd80aa2a1f0f0ecbe45298fa5","b8327ae3e3d464da70f66fb9efc8df2eef7ccf4d371241aea2bd267fcb41784f","23157f2818bae25be84a79eb266aaf737b87c11946ece0e1bcb2e3fb95e79a16","8ad09d3570b63ebf04572028f5c11d674bb58f85b4d4e2e21f98b05b1ba3e0f9","214877808ca820484e8640777ce16c8dd56e2543cc66fb8ac9f60f3f0bc5422a","47487eb7c1405190daf603c40b580d820c0e2d811a1e21608efd8ddf2d5a31bc","c9529055fe5b6b0f37b66764f65f279ec072fa3a305dfea6da010f70d30ab502","438fc2375d6ac60843ffaeba15cd4e6719ab0c0a256a5e1e4fb5964975c2e131","b2e795b1a28ca13f7663ed8f62127f0cc32efbf6296671f3d7800b760642c1e7","7c65cdc9460755a327943aea2ce97e2f5c6080d778d9434fe2dafbfbc1e3b04c","5fa09e3847513934bffaf71960ac2a100e20422698698ab1e19a4fe8ac133514"]
Anchored: 2026-10-09
Public log entry: search.sigstore.dev, log index 3163352270 · entry 108e9186e8c5677ad020…
Expected log hash: a3ae0badac804d14d314abd0e71726d06a96c43a3840dc1d63acded9268c461e 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":"v1791543790412","kind":"published-quote","locale":"fr","page":"brand:acrobat","quote":"Extrêmement utile","rating":5,"review_date":"2026-02-24","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.adobe.reader","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 (784ff8fc3c42…), 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.