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.

“Ein guter Kompromiss für Zero-Knowledge-basierte persönliche und geteilte Kalender.”

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 2579318932

Proof data

Record hash (SHA-256)

0b9b0dbbee6314fd6204fbaa636fd03139a966c01522a0f61f05e1de4176159b

Signature (Ed25519, base64)

PrIRfKIXBScyW41qh+XSAtv62kvrV+y5hVlMcE30yQYPTxCwribzrh5xGnZSogtHc7101i86lyeDN+IPVGleCg==

Merkle root

7b64262ccb6992b4b1db9e70024ed7bf00a279068dc28cec38a2b0e5ad6c1f05

Merkle path

["0b97b274317d635dc895e04f82c6e72ece5c897229eac1cd308e977948f26fbb","183419d654a53d1e7ad5fd59546a409790dda22de0cddd96c94c1b1ced76dba8","0dd83b5625292f339a1d4ef81f1a9c44c22a2697ffd8cd21739c97812b026f59","8c09da90caa1cdcbdc1bba4fb2351904ced7bb64014c3ff5847ef05f3fa1d1cc","5924e8faf26e0bf391a5aa19c71562f4dd17a24ed19397ce804675222c69ffc2","080649f71efd47674bd01edef4d6b46321c4fdb08bc255319c7235a4a7f8705d","f076429664e7d3ecb0e5a29ae91743cc2e3be8bd104bf4099f6c774d63dbe77c","76f6bc7926e458382d4422099ae90f4ceb9fb78618e93c9d0718ef88c4431aa2","815dd702941b2b23a3787c9030e07f5fb2d8aa540afe7bac3145db627661fed5","408bf588f1939f8acf9f2a3a242701bc31aad01eca42f94c1e10d8a6f345cd18","dff451acf90db9c1cbc91e619a6adf9dcb67a75c6c893dcb7428abb7dba72e52","aa818fc3ed365700a313226e531d8d443301c73e224b86ab4bc8740c08d56de9","df04ec2f9a279e16bd1cc7da71d9e700ebfbf4bc60d39678c8af20f9e3783085","320bc2a1db4514fccd8cf8663fb8c3ce3d8b8f889769795ae761d0eb0ef5b761","6b57fd4f8c09475077477ccea0d971c3d4573af62c3a98d844ca044662800d45"]

Anchored

2026-08-24

Public log entry

search.sigstore.dev, log index 2579318932 · entry 108e9186e8c5677af677…

Expected log hash

32fe6d62a45bd1680e87bec92e1d4c4241f512243c06642638c7afa2cdade2a2 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":"v1787537478837","kind":"published-quote","locale":"de","page":"product:proton/proton-calendar/de","quote":"Ein guter Kompromiss für Zero-Knowledge-basierte persönliche und geteilte Kalender.","rating":5,"review_date":"2026-07-28","source":"Apple App Store","source_url":"https://apps.apple.com/us/app/id1514709943?see-all=reviews","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 (7b64262ccb69…), 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.