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.

“It allows me to edit PDFs.”

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 2541942774

Proof data

Record hash (SHA-256)

6a42335383c5ba1b9d7b612d6aafb722eed97611cb8cb69afdddd5cf44186a82

Signature (Ed25519, base64)

5H0ZgDgLTMFWn3wbmXZjKGFbhMWR7enIBczClguzWWfMxQmHUCsM1vs8P6q5uSfqI9YxCJqUj+goqHOA1J6dAw==

Merkle root

0fdf8a945cf322eba60395065bdb38bb3eeb32c52e065b6c93c48bb56aa3bb91

Merkle path

["6a4309317ff934dceaea1230ae83e8663900a2984b23445262181ce491abb589","57fa06ffbd25aeb7b0bcfa28e5663561edb66f11f1004e4ddb617eafaa6256a7","2047b2383aa62c546bf2098fd70fdc7e31a1bc67b8db50365aa35b20c2bd2b3b","c9753eb4b952dac0a8958dc64ca8c9bb63258ee6a629c1889c67cbc893d232f1","8b29423e26f11d78c9179f9c708f84d22bf0acc8ec26a7cbc2902d6239c8b3c6","1a143e7892fe29216fee3841fcade3f5a4d960f3f19d9d87c284ba79e4682f0d","bf8d331b082d29ec49c2bf852df3ef5515a85abbcedcb179dcc13eb2dc04b482","0786e46986d7291b96125f00e2ed978be374a17d4ef2b4de0d7aa87175ef57da","34592f1f0f45df85e88a13455111dedaaf0f86a05ce2a4cb4266b95597380826","bd3b61a3a8bdbf733896020e30e4fcee0d5bca0ccbd366449c4c8cbbf68bade4","3bb33c0246a29f236d592e7eeea8842f1f7d6031eac0445b3352c64c0fe253e3","58a6e6d87e5abc2ae84c16426ac7ae57aa4ee3dea4aa297d173e96c213dede34","bf9364c8f07cc31dde92e8fa9e328df950308aa505d76ce4973db2a6f71840fb","e612bf3863a4ca6db004d49df9b16b869da6bd7612ef55762e23c722f5ffdfff","31e60baa9fb8f672f686fd126d7dc82498bbfeaa38bc676e67691bf1c2c7c210"]

Anchored

2026-08-21

Public log entry

search.sigstore.dev, log index 2541942774 · entry 108e9186e8c5677ae0bd…

Expected log hash

4825ba618d3c3368179be13912e101812df871de37f30b1ec256ca6d987713ec 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":"v1787277864570","kind":"published-quote","locale":"en","page":"product:acrobat/pdf-editor/en","quote":"It allows me to edit PDFs.","rating":5,"review_date":"2026-07-29","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.adobe.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 (0fdf8a945cf3…), 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.