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.

“This app can't read a pdf on an external usb flash drive”
Google Play · 3/5 · 2026-08-12

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 2671872742

Proof data

Record hash (SHA-256): 144baf77f0fd5c1af7ddd32789d25b71893c6a1144202a752939acb197ff80d7
Signature (Ed25519, base64): 9dGRGAjKJW5mM6LIu6cT4TPmKvoEpkVEEdUmEYrv86+MaRLgpgqAcpWfxTaKo14pecQnemxoUB8D5aiXODqYBw==
Merkle root: 094a0fab0c01832d26923a58fe8f350b3c6ca48e8b16b240184f8367a15aa8b6
Merkle path: ["1448c2856c5de7dd74463a13d268c2c469a0f4fabefbb7b43c36141b3320e1c1","deac678704e9a1bb46bce5a0c92ba1796f42da32f79285792a0111757c9a3ecc","b8f47867e22ab6c3eeda4a3d1937acb3ddef98e0302f9274ec1c7051fa8570c1","5be2e1e465517f377742cc2b8ff10cc5f01c61e3e649083f455107e591906e99","c8c04749f35ec81d9ff7bbc37b058246aa8e273be264b934a441edc245c5b3cd","bb011737e80b6960dae82f5f638a5060b6edcf7f6a36b81be6edd44d3a793672","0759d78fbfd99026d8616a09127a388650b3853226af29b6ae4aa434a5e7a066","3e020b9d5958c5e7eac4a18292d45c208c235e68293684a051919fa5d18bfd6d","501dfe25671e03c42fa3b35c9a84c721c41833b3b2ab1fed1fe436ae210be406","32ed80bd2c59add95788d722a2b47b4edc28dec57350709e8438810f92a5ae86","ccf73a0ce9908c03a01c86148fd7e7eba3a11e7ae91cdd3d22b5f7b222f0066c","5321db18d59d737ca42c8b74ee5be9358643b7b9df58449db798da27632f4977","9ed88c102c350ee219ac7c046ed1475908a521d13240fad933d16e5f2b3c511d","380b5c2e2e7b460d65f30f9c134c2808005ae515f2b2ba68420cd535a8934ffe","caa9fa8b05985bed3894964d9a508a9aa26df46c8841068745810dce8909f2ed"]
Anchored: 2026-09-01
Public log entry: search.sigstore.dev, log index 2671872742 · entry 108e9186e8c5677a2743…
Expected log hash: 02e061eb29d68e5cb427477df039d4bdb48f969ae320b4abbf52a92df6451571 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":"v1788239533839","kind":"published-quote","locale":"en","page":"theme:acrobat/quality/en","quote":"This app can't read a pdf on an external usb flash drive","rating":3,"review_date":"2026-08-12","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 (094a0fab0c01…), 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.