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.

“Why is a simple feature a paid option?”

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 2524422814

Proof data

Record hash (SHA-256)

683f52297a1130e5bf8eff6e89992c7ea4a67b4d9bbae807128ed03bd371fbca

Signature (Ed25519, base64)

zkQ68ndhCSIMJ686gdmL2Y//7xw8jvIzn3IVAxuYOeH2zi0LL4+fXEbldmm17RMSiweOTbLwlb1aoHqdS1NuBQ==

Merkle root

f8b4f722de05d6805a889681c3818dbde0f5141f0c8463f2762c4a9a02d66a2e

Merkle path

["683eaffeaa28243f79b4b7ab29a626cc83de011f033748185a98110002760f81","1b3cbb7ce5c7a59ccfd663faf63bfb500c4138391ffdceecadca7c446110f2d3","b1d574a30c2736bdbc1f1ab08f194be906120be3dce789572a4d600a4a0927ad","e01d8c29a4669f5e25f523654df7c41a1d8333d577e479a675ccdb49e24fb691","61937388d0b51840c4b8d80ff90b19283baee82c50000115be43bd9f5f9b1132","505e62f3770e667642817b627e42be1c96692af7a9a1835c84c40ae3d4adae7d","1600d5c3f6b91bb2103b7d85609157d8d36f487bf02d3d191d66444e6d61348d","412e1872071340caa08ff143ec42ec3685d428622519b431a063122cd918d8d5","6ff596d1da55fff40f0d49927fa68610c03d64e1efcb33fe177373beec55dd79","80e49ff9a86b96687fc1088229c13818f573af897f0a0696e3c5e71b80d91414","a7826dabc1163f766e566dbbfe78df35c72978bf6eaf019668880078fd2cd32e","65cfffde75cc4157e68a31b9095885e5e2f7c48fcd38da5382472ae6d6bbfef9","8268e755b762bada765e8e291a19b3cbde03b3f280d9dbaff898a9eff2afda2b","d5d0d1ff272e71289363999b30e05e232e422b6802e1ac3145abd5303dfd3ccf","1d6688e1c2658422e04ab99dfb5c8345ecb419dd1f8c6994b4040572f5b4ee4d"]

Anchored

2026-08-20

Public log entry

search.sigstore.dev, log index 2524422814 · entry 108e9186e8c5677a9741…

Expected log hash

e042bf60ab37eb8951abb7a408cc8c7483ec875b9606253deec7a67967130ae2 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":"v1787192294432","kind":"published-quote","locale":"de","page":"theme:xodo/price/de","quote":"Why is a simple feature a paid option?","rating":1,"review_date":"2026-07-31","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 (f8b4f722de05…), 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.