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.

“sind die eingescannten PDF's über Handy immer sehr groß”

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 2543383844

Proof data

Record hash (SHA-256)

6c5a64cad02fddd971418ab261c45c0d98f3b6c9c1bf76cdce8dc32a599826d0

Signature (Ed25519, base64)

oHttsCF5H7R4Bz/tFWvqay7fs+IUq7qAnRK2INB3WOpMuRO7Aov3LfZ2tbqxWxyZ3IHO1Bb3SJpgd1xERtgvDQ==

Merkle root

7252afe559009950531df937e7edc9bd1c57cf28a24ed7f6c6613b65f459eae4

Merkle path

["6c5c943857871d98fba463e905aafecfc438f8533fe9811b1144924850d33462","9f9842e184e70e1a8f8a3dfa3a36bb4615d313e2bc2e4e966332c313495152f2","7c2ee4014fc5e5a6145bd7b1c501f81683998cf5ca203c417cb9bc5005ad56e6","5aebe89bd498679f3c145ed553cae331332a2924cdb11194ae898e16e19a892b","dacbace48f78382f6ffa2d1d7fc02fe2c3024d80ac2590d95fd6584659d55317","25ed3eb35e0d3de0dcfd4be2839f0038d8f3065e47554f50eb8f4b8091621657","cdad5c04c7de31b34158b09d0abdcf7697cea36728598b03e94e0a1b2e5e3b91","c57b9b57a78eb4cab7a83fe2d9aad4bc86eed667babd9641290cb2ffd8a7cce3","c648ce8be76fb0d47fc5441f51c78714d6cd454ef208ed10956d7c76506aef86","d2831d67eaf4f3686dace303e10d8acc1c0de268db70b46b61261479e6f791aa","cd249592084e780a35e0081c2f83b2d7e98c25f9aa204178a806acfc1ff1d41c","88302dd5ebc2ba0cc663e042fe6c41ecfe1897521b7123ddb032f75e20d92142","18e11e10db085a7803eedbaae6a5cc4bc15224b70fb84f50d498979bf8156746","cd4fda8dbbc96e358ebf0ecb75fa543c15a1f0707b57959166ff1973bb1b4136","b3900b15a2a9b7aa805b691ce86e29db39e03d547238a84a3c0fff4fc2daa54a"]

Anchored

2026-08-21

Public log entry

search.sigstore.dev, log index 2543383844 · entry 108e9186e8c5677a6025…

Expected log hash

65212d488cd7bdd0d67aebdd70bfc57f4b622fa08b8179427635d69eb7ec385b 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":"v1787285599851","kind":"published-quote","locale":"de","page":"theme:xodo/quality/de","quote":"sind die eingescannten PDF's über Handy immer sehr groß","rating":3,"review_date":"2026-07-29","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 (7252afe55900…), 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.