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 can not edit the size of the textbox.”

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 2514496096

Proof data

Record hash (SHA-256)

6a90181f00d0dd0db4d4e8a85a7e8e7871e72e610caec9c42f85b24717060459

Signature (Ed25519, base64)

daVxt4taJ+RIx8WabYhhsHraBgf64ZbBlDrYuJ87aiLsErgsiX0hVpfmVCeYNt7T5Y7EKLxeyPZqVqdW36T0AA==

Merkle root

790984da83ec061260aa072fed7636f9dedf91964fe0be93d7a7a622b2b5a92c

Merkle path

["6a9317d10573b6df606d04767f390e41bd0d199ff66a068ef94aa06171bf70bf","02ec12366009570bd8525e1f8589bf787aa9e0a5af10844b094ffc9ffccb1295","446f1b32b29e855692e8b315a31e631a5963ea7a829f15034c263094173c9193","3aa981e1d2a4bb89adec58713a7389180e0779fa244e14c71e433814611db03e","f38147199737f1dd2d0245ad0de9440c1819d65f54d7fa58ea5fc31f847e4f3d","f234f4255c0690603bbcdd34c5bc16a497c8780165b47c277c8094dfad63ed60","0db067cf6c8b3f44b9e1297eca09465de69514ac14cc489b53e56a66a9b62e1e","ba3426cc3b189d7580db4ade195fb8f177704a631f9af36d419f0c7042cea6c8","b23feb8103f878a4f2ffa8520fe50290e418b550783501a1625542f73f83e317","a71d4d37c4100572ab4d2d2c91c8303d7966b7ce707956f61e07695f69478f79","a0fbbcf462ffc4886579e3dd0ceced43a9ce73cdecfadf6a763b154492128976","90f0a0e3211fc23b1e8db52b76383f6519eac469757414a3b9d5875619fb9c0d","6119aef4031d03205576aa94cf7a51dbc6eedfdd420d909f325579401c8abd0c","19cc354f6573191d4e7914f94cb811eea176897530d869ad83bfe3cb7fd5f206","c7feebd3045cc2c03d87ca1241b2d06259ffad35db645c59ca3c5ee2004a8947"]

Anchored

2026-08-19

Public log entry

search.sigstore.dev, log index 2514496096 · entry 108e9186e8c5677aad27…

Expected log hash

5d2238ef768473286d75355f523ab94503f4ccd3d25e17e9efb265aa0f540183 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":"v1787129810322","kind":"published-quote","locale":"de","page":"theme:xodo/quality/de","quote":"I can not edit the size of the textbox.","rating":1,"review_date":"2026-06-29","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 (790984da83ec…), 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.