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.

“die angebotenen Abos sind mir zu teuer”

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 2542879916

Proof data

Record hash (SHA-256)

638ca5f49e646837bfa16eac0d3753da6f04a5cbeceb9122f38af74ff598cc8d

Signature (Ed25519, base64)

mq//21bfdBIjKV0rI0HLuXzLqCnCQfnj6AeQ/wCf5k61mrW0/Cu/sMh0ruU6JkbVxGVyi9p4nRAwSpf2i5SlAw==

Merkle root

681242bb8cfa94d3b60cc06de1bbe3e5e124dc1675276b11df0aaabc9faee58c

Merkle path

["6390c7af0a83c13d6a161c6853af1a93163fbaf25998c0df55b4925cdee4ce21","22b35591ebbf054686eb6e2b48c4d3080e9833d3b6e37d0e96b23b1b46023613","e0d358a328af5692d3560250844bfeee9d0b5950afaf702db762cdcdb7e98cbe","53a947cca4449732cd226a75ba1ae01732840dec6fa73b9e75607a58b4418c0d","e9853ac37707c174b8dfab5ce420b04fe923119f0774456c15ef5241cae768fe","cdbd87d416d93ea765793d96c7971b581c3a4761fbeb6ed08052087c975d0810","f5d3f58a8672219582d48289e28d53233e419500059fc31d23d887f62fba1c07","43a07ff7e74f65017488e4d786ec6cb4ed73ba57ebc5e717d727b04cf6a07d95","b2a895e914e6d74d661b2ecc4ec2a2e9d215db48566d5913a8376babab58b2c8","d21a8577cddb450b41d5b2d6729858848a6922fb114c328a3a953adbd1756932","032be7307d5db4b79cb5329f9b3de2ef3a6e3543bd6b235f36cca22303365eae","f44be1811ff0bb195f5fdef3c493187d1dd9ac5bcbedba4371f021a93bcc8365","b8686ad1f3c76af9372c49f04594bb5fe4d826cc036a375eba0c663f521c54c8","ac4c7c6db85c9df99401fda1075a3bd42dea9188ac58b0911e04bce8752d56c6","78eca2193b177c5ad7546ff5d365dd6cb79efa278dddff5151740888f319c0e5"]

Anchored

2026-08-21

Public log entry

search.sigstore.dev, log index 2542879916 · entry 108e9186e8c5677a2329…

Expected log hash

8337812f20bf1207a3c96eed87ab975d7e92ac1421dcded24507b32e456b788f 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":"v1787282728402","kind":"published-quote","locale":"de","page":"product:xodo/pdf-editor/de","quote":"die angebotenen Abos sind mir zu teuer","rating":1,"review_date":"2025-12-20","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 (681242bb8cfa…), 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.