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.

“Threema wird fast jedes Jahr immer teurer”

Checks (re-run on this request)

Proof data

Record hash (SHA-256)
19f791ff2766e4b653be7497063180342e74a64ffb180b13e1c6cdeeff72f60d
Signature (Ed25519, base64)
nSheoX7Vi73mIMcrMht2mKlDxsOpYSwqI5wyKptugm9jZkMa1Q7CRtKVCXXCW7W7dMfN+zNE9XjxnKr0vWbWAQ==
Merkle root
1b26d1b85473caad1868633ec4c931eb970e81199eea87926818f3f1753af37b
Merkle path
["19f7cdc66ef174273f587ca4c48d07667ce010d636c57ee93a09ee51906d988c","e269c0a807ff737a88ddcce15eabb92b555555640b605a9941f0149ba3363ab3","ecba34757476f4663f6e8a9832ddbe2658bc1cf09178a67da5a65a8a19a4c5dc","3016f27337a89e685ad1e3bcfd716bd69429e6d22675760d913b10f111178c98","96d7e429cff1fda5d7e625bf73cd0581991902c87736530b9a205f78c6a13704","7aa3e04bb01c5398816eb6dba6ae4db538b7773c46a19e8099ec3434932a004a","a9ef23ba1174322c044adead2e8cd0d694e1a41bd02e62428e22585fb771d17c","07bfa3f10c00ec26ac61d39814c053abd5cb47b7bf5a7daee14cdc68f462eb04","00cc39293d773f741b700d3ec4129858e5fe5fe035bf71894b5af22cf55f4662","93ad060edfad0dbadd702b298934526b7572d88c62f1af7dd0d218e7bbd09fc1","2ee8fdd9f4f407e526864a8ba3702d86f1097bb26b89614052b4ded4db8d4678","3e245e6d740eb81c4f09792f11d7fdad46833a72e13bd136ecc679eef2e69b63","0a715bd63526388883fdeb099e9129563e4c22e6bfb87e7eb3c16d297d4dcf78","a52caabaaff23a9dd211857be614b6dbb651e724ed1f53485e9621733590c1c2","06054c91b82ccf7b99bb6b4fcb7c60afa97f93295e6829b75e5bf1efe9493e63"]
Anchored
2026-10-08
Public log entry
search.sigstore.dev, log index 3138947147 · entry 108e9186e8c5677a2712…
Expected log hash
8f66b765b7efcb11dcdcf57b81c46ed3317a5895f5b870638e23b76f1efbb2d5 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":"v1791425549743","kind":"published-quote","locale":"de","page":"brand:threema","quote":"Threema wird fast jedes Jahr immer teurer","rating":2,"review_date":"2026-02-23","source":"Apple App Store","source_url":"https://apps.apple.com/de/app/id578665578?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 (1b26d1b85473…), 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.