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.

“I was not able to share a file I prepared”

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 3198225546

Proof data

Record hash (SHA-256)

180633780aefc98b0a869d6262779f51bd81dd5fe2dcc341fd5ddd5323f8726e

Signature (Ed25519, base64)

3qZW1m9aLXVfcwxhjaqQgLPZBJKOqyyll/9PLsrhafMHIFmmep8kBNMgbhGRspID299OJFJw+qbyezOi7BNNAA==

Merkle root

12764493a64961d0e0d426bbec64b837c2e35bc22a58920afcc56db07df6e8c9

Merkle path

["1802e36d334b2b8137680357a0ba47205ed876516bf9a5446bc86d55aa4856d2","afdd6f2acac596288ecc300e5af88e948ede772295b00f7d95ad6c921d85d29c","fb505dc02394a3094025a0b424fe25bca2aa246e9f843fd58bd3c1c9b436c4de","172fe17c2cbb259db167fee34c43c4468fa15176eaf63e27a7d60d561c2f3501","93fe46b79055fc7e4c3bf0a0934144ad3ac98448193d7d718ffcf43893fed712","f75053ed348e535eb469500bf76e1eb68b8a7d24da1914941368edbb97b149d7","9713446f2c6cd6de2b9ee5c7c3caa4f51b79149fb187b35a2870bd2bd0e5ae39","1ded4bfc86c24ed64a63a374b506b097c5ce40ae338e0b80f3e7fc5a94e7dbe0","29b2a2e697b6c446e9da433b322298f4f787138b921ee22a479326d33f2066d8","6c00d6ac9b33bcd98a5102502cea1e4ef16a4197369a68305c8140f311662270","713a63a5291b83641603b7a9e9e52ce5f193b1b465cc3d5a1672a80e3bea976f","5629ee10ba4b7cb4395bd3f7417bfe15e0278eca0a90e9ab5a5626f1b4cbbdcc","b6c6b7aa75be4fd4f206793d7c98702963f427cfe45d9c46972416cafee9a131","bf01790763bd70681430a2841b8504c59b88918b5b88c9d70f6ee7041d7ca6c8"]

Anchored

2026-10-11

Public log entry

search.sigstore.dev, log index 3198225546 · entry 108e9186e8c5677a10cb…

Expected log hash

a11b46fc63b94f32c49058752856fbdc4e92f7a41d4e67238e3563657fcd50e4 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":"v1791685609571","kind":"published-quote","locale":"en","page":"brand:xodo","quote":"I was not able to share a file I prepared","rating":3,"review_date":"2026-05-18","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.xodo.pdf.reader","v":1}

Verify in the public log

1. Open the Rekor entry (pre-filled with this proof's log index).
2. In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (12764493a649…), which ties this proof's root to the log entry.
3. Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
4. The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
5. 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.