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.

“Man kann einzelne Termine innerhalb einer Terminserie nicht bearbeiten.”

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 2681187280

Proof data

Record hash (SHA-256)

0678205bc72acc0d9231ac4cbc503e6d1d8899cfbf3d1e6c42a360956cba9d21

Signature (Ed25519, base64)

QglmyHT4ePcH8OMqqPQKAXsR91hd1hsiMHE0JEtCZF7so0M4uJLXRIOSB8bj4IlEVlYi4S/5Ck0JqsEdQSTtAg==

Merkle root

33c00cd8782e83e7660b36f31023b9067dd316746fb34a5456c153a308339c6d

Merkle path

["067b34e8850a71220e1b09e5285c063df0a87e6f5b120a21bdc995c34180f84f","1f6f04b16d1d1ce9c423af8ea0529e11115edf3c94481bcc6fc2457a01803f07","934ed7ae6a02a9080fe3bb3d61b91badb81f7a942fd90328abd0a3f11356fd19","221b93684c1a71b461a409db008f294be283d1c98e749986704193707aa26265","bf638d10086f0e83cbd05da0c449195f95ad6dce6c598543a181f6c16829f7ed","64bdd2614fa94b2f9078af874525fd5e46a0167b3c6fb5f64e4e103f7845c74f","1156387cac501ab56fb8cd3422ac6e8f40ad5e8878247a09ddf6c52d89c18d4f","0903adf9fa16bdb23b4c50b5b854f78ec4f8942aeacf3078cd336ed6b4946a8b","bcfa85b16f0adc3da1d252e9bcdbef73703020558806d0b744780f39957ee880","ed9e55249e713e4f442cd99046ee766fd79bf9b2cea365f93d27c483e489a462","6173bceafd9a437f490bc53ff07057f7262f30ec8a6e9e32ca4baf1bc979563c","d3aa483f4e4b46fe7fc7e840fc99c1ee942dfde16579987c10dca7fe286b8a16","d18f27a41b03a07d2014714c62631a673cf276797806c236330f5fe764feb6bc","c4aec0fb70f7ab82582654e3e3f71a251f73979eaf3fcf5c39210c14e09f34e5","1c612a54ea4200be62bfda791ae9c32645368a1c77880f74595307b48a6cb39a"]

Anchored

2026-09-01

Public log entry

search.sigstore.dev, log index 2681187280 · entry 108e9186e8c5677a68da…

Expected log hash

6c4c4fe04f66541fe16d28c86bc42894dbce07874d32b961c3ed57a7667195e3 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":"v1788300906973","kind":"published-quote","locale":"de","page":"theme:proton/quality/de","quote":"Man kann einzelne Termine innerhalb einer Terminserie nicht bearbeiten.","rating":3,"review_date":"2026-08-13","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=me.proton.android.calendar","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 (33c00cd8782e…), 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.