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 2544236959

Proof data

Record hash (SHA-256): fda26d1800ab65f4173ba054a665fe614d11d3dc0f26818021ab0884a9929cf0
Signature (Ed25519, base64): m3z9iuDcHOEvOljgokq7yLkPc7KWDV45/IEYlMtGkR2H9wnnvIVk9uxRMCTwz5WOJM3wgL/3XmJ9RtYDOGlsAQ==
Merkle root: cc942239c46f13b1af6cdba0960a24a6cb62e7a7a462aae1e8126c0182dbffc3
Merkle path: ["fda548dadce16906abd16e7a2e4ca7467b636fc7a3d1c72c508f775b4b72b5db","487508bce033f3676f8fabeaf2ee691f725cb81dd2398c02c0b8d115e8d4b312","52f35dbe3d81bf747245f3df259adc450aaef44f0f688f70071696746884a588","a153c06d8241dae479049b4fa8fd1e7aab14a1b0550cc85430b22a3d95be84b5","2d16f3cdc65b78ff4c1b80e781b6643c9d65788dcbc3a44f9c01d8da06e2d73a","12384c1f8c2ea70bf3e8d964b93acea51b86c1448763ed9f84ba3cec07a029e1","af213fa232da8bd19a3cb58ee5c5cdd101e2c90ca2b2d9de8566ad4ef5267d0f","46a71bc9852157825f56073ece2f7206ffaa6e9cb2c536ca690ef63e573439bf","c3d723826e4078b544bda83ddc1e892b360649a81e4877a9242c010d40e45c74","ed929c3dafaa62de10e01218ab688636e6f9b62f6a12bd3e6c45c109ac325aae","b9f80a9801e685ccfb5a526d6f77648a2a20a822d15efe579021691cee052e3c","60099dbae313e53e1410c43a173e183f13f26b3b253db87c564730ddb5969e60"]
Anchored: 2026-08-21
Public log entry: search.sigstore.dev, log index 2544236959 · entry 108e9186e8c5677a0341…
Expected log hash: c82e13ba2a716d66def44df55ff50c2e9db35da204570a7fd5650a8bc2702db2 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":"v1787290890795","kind":"published-quote","locale":"fr","page":"theme:acrobat/fit/fr","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 (cc942239c46f…), 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.