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.

“after that, the app wouldn't allow it unless I paid the subscription fee”
Google Play · 1/5 · 2025-12-06

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 2594765087

Proof data

Record hash (SHA-256): 0cc4c6278aa99bab1738025232f7d60ec4e6f765219748dff3c0cdb821365920
Signature (Ed25519, base64): X7mO+eozEXA/rMJKR6SuPD7MDnfjcQq2477BJiZVkqeCIyjC02ySKwhMc3CbLYZs963rUqFiX5SK2cTQM3N5Cw==
Merkle root: b839fc90680d59ef42f94824bc47a43844eda063a2dc78e98d04cc6ddfcb474c
Merkle path: ["0cc317c71c712322ada1c9d408eae26440c7079aa5bc06b0a8937820556e881a","6ffbcf281eef8a09c94ee52af52c8ce7a8a8746602c19cb34957ad84f5c5366b","9264c58a5afa922362ca690f57ac0203d2d46c070a353f0ce5e61c7915725a8f","2b1bc42db3a0c3666a1e490489fafac848a2caff6d978195c3a366ae1bb42694","7f63b4e07c17b6139e813a81d331d83c782b05f2b4d8745aedb911431cdad71b","fbbd06265208b95b179963c45f7ab6c41a9a83efb73e0f664bbc8a8f14a82715","12a063e4b875eaffe911f04c746cfe47b6f821aa28deaebabcb22d3a0e6314b3","8fc1c8c4642862b64d7dc42fd35cf8ed72475515164955cf6b4e45f0b9d4e320","113e974883e0e5bfe1c2ab6bde3fafdee85cfe201c00d5684b97075fc6d2bfc7","4129a0e5dd7c6c6127c49fe9a356dc1082f7a3fff2b2f0b962145fd15dfb6692","750c5f53d9d055181e77522d6709b82d34376998a45f8b92baf4de3d09632ddc","da3f18db4275ea305f12e1c8c0800014ede0f36037fddca212d2e67d33301687","93cff867a371eca67187fa18f29672e43dc122f1a11ead8ce02d295afdc520fe","2d44a3f2a338515d5139d8c4d918da71ecf66353dbaf922a6fd5c33bea9ae2dd","53cddda7a1b6beb992bf062aa34497189c716ec3be3251f7e5db0dca344b1a73"]
Anchored: 2026-08-26
Public log entry: search.sigstore.dev, log index 2594765087 · entry 108e9186e8c5677ad8ef…
Expected log hash: 2b2c4baead5a20e634c42acc5e7cfc8d7389892f0fc879f3c38d7eee1c04ecac 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":"v1787715994367","kind":"published-quote","locale":"en","page":"product:smallpdf/compress-pdf/en","quote":"after that, the app wouldn't allow it unless I paid the subscription fee","rating":1,"review_date":"2025-12-06","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 (b839fc90680d…), 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.