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.

“writing notes and changing font size must become easier”

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 3220562278

Proof data

Record hash (SHA-256)

24203be7dc684ac65152e8b83fe97fadff418bea6253601392cc02d74d57e68e

Signature (Ed25519, base64)

4hDWaltj5NYXpWtRollk08ai6+/ii8WbogEQZv2xOZOT+SYRb16M8NUtimasOxpxf7fdko024qUuzjbIvfY/BA==

Merkle root

2d214bb14438515f4bedf5edd9b00a6a5113a016ba9b9fe8160d41d7e6046722

Merkle path

["24215441a1f075db05d035a4d18bc9d87227cd220e2368905f5fd4de1ce6f540","627d011aa7ffef3a0a344e6f57041d2f0829d5d83505d5878fe9c30915f29698","b8be194d27a61bef2026a51c99592c2dcf74a465f6cebce22f8e0a81a739d253","e51b268a90e5e577d3e65625186bc2e8d83e3f522677d28661d7a26d94f2d35e","321f530d5b05d4523a70ca9d779368673ef41a207edb36a9220b16938311db2d","a3ec83d218a68d2a74b4d201d42c362f6b7ee78f6079ccb1f77fcf16e5a904de","48210c83f00ad2be4fd7817ef5a8732a4626c7849f7081da2ef03d080245e122","fe1ca6dcacb4b47c9499af35937e2a12403268a9369f2cfae56dfecbfbf8fcf0","ab4eb941e2ab130733a25104c15e55f30b2723439ac276e335ec4beef963e155","f3cc4b4aee569d06e4a2cd5598187bcac7bd666174164b7e458fbd80db511fb3","6a765946c1eece595050f2a8d4bcb7c1c60c0ac38183d2bdf49521706099e012","98b2364feb69697f9c170c6c8c253e875bd2ca5af1617759a81536a90cf6f664","c8e78357eabd343df2a6d1ad8a9c122f986bc772443ab896b1e0fa855f0ebd28","35ea2df06612b261a549235c4e62b3e1ad1789f05da56f9ca671421e5071b72b"]

Anchored

2026-10-12

Public log entry

search.sigstore.dev, log index 3220562278 · entry 108e9186e8c5677a2753…

Expected log hash

13907aa3d3da271016c4b5e75946c4440692c6b4e1684187b965dbb983b157f7 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":"v1791777669660","kind":"published-quote","locale":"de","page":"brand:xodo","quote":"writing notes and changing font size must become easier","rating":4,"review_date":"2026-08-08","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 (2d214bb14438…), 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.