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.

“Super application et utile.”
Google Play · 5/5 · 2025-10-05

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): 46885939e1fddcabc43c7eef3e97a6e0e1ae2d0aca3c9fde5b77f52f3d0e3844
Signature (Ed25519, base64): K6n6qrbC0mSIKbyLJzHEtDTMWS16nqehk8Yc6JuKmIjEmvhEFmgvPmkQiNWHa3lxbtLcXvIP49jxi1hI1fZaDA==
Merkle root: cc942239c46f13b1af6cdba0960a24a6cb62e7a7a462aae1e8126c0182dbffc3
Merkle path: ["468e7e0f84742e5614bd232f50ce5d5e242006bf4bbf707978ac67838ee6199b","7b4aba1fb405a32d599ebcb09609ef60eb245ae89d47d3f7b5a6cc7a55909e6c","304b3460503a9369dee4b7c76a083bfcf02af16d4151d22c13ae27f084e03755","36a1f9f602dab63469bc016b28ab8db15c6ead45e843b86c01c9177f8ed84422","ba3adffb9e5d9269f2aad653c1797e1d9445e00b897e493307c87f639516674e","3224918889d38ef7424af0fea6e65756c69a83819a4e235ba95fbfc7049db506","2e467d05857d81f96f736219e58cd61f963299e78b97925af25147ced30d1b8b","57b9711829040fcd6d3db75cb83452852f9919e6f0e4595edc2ab2283170f368","8feef268c1272fc6ed9f509cfca1c3709bf6b66641f3e7fa2a46924e1768ce0c","520f3c632e0b1ee95937f75447e33ea2230c07e9789c4a95571ff8211e534e38","2341cb6121ea4531fa2606d83afe9a0add5157419b1af4d450c4c05d690b2e3c","335f41860fde8862928ce0d9cefda13efff6f5d0070395de4b64558e22b3bfb7","0353f0b69456ed9c5a31545e88315f672f5d9de7e8ec189de9b3089010827031","f022ca67d84103ce2cdb199754ab60e49f2f04e17a257779049ad5591df59737","f25e568e6bd90a5619f6d6d975016290629a8afed06b80200730e4e12fb2d1bc"]
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":"product:smallpdf/ai-question-generator/fr","quote":"Super application et utile.","rating":5,"review_date":"2025-10-05","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.smallpdf.app.android","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.