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.

“Es ist unmöglich, eine Unterschrift oder Anfangsbuchstaben zu erstellen”

Checks (re-run on this request)

Proof data

Record hash (SHA-256)
0b192eef091d0cc60a1021737b2385328e30cc2a6f627ae2a9a419e2dd320465
Signature (Ed25519, base64)
OoTLwj+CEgtL0emwrH+RnGF+RdUrHYLQj6Yjd1A1HFNRFETw0BWtsSPosmE6txfFYzbaVf5r7xWFLXLtbfT2Bg==
Merkle root
d019a962265fd99700bb41421c12bf721bc431ce9725f4e9d547011775ab56ec
Merkle path
["0b1935ece04b5179f9cdaf530c0d7e4237e7d3f28c7b16dfa23d0e798e27fa0d","75335d579ff0b59f3388b24788892bc790c7c590733916d0cf43744584eecc32","a4ee64266cc5b90ad8dfcdc7f6927b89c5355c86e28ca49dea8eeb8546c26cd6","b02f63c3d1bb28397b8b5bafbbb73580b617cf969d107b15bbf88bd39bd894f5","2ec014f86f7317b59d8e5991ebf939ebd3c495594a436bc63f3f9771ed6bcfbf","eec67e3122ad2e1e28b599e52d4746723847bf13c468a14d7598abc3c8bbed69","8f948f5530db090ed5f7380ad5387caa87506c8fd9068edd68b82de6ef2d89f6","e2e1ade2a1b450230b10f21e64adc1e37aa49e3dad985d5af0a772524206e672","da531636ca8589a0bb866c9f012ce723f6e1392415c3c1571a431384ca31378f","eb3dd5434fe96df428da5de67b44043d1e0a655b59c16fccd9d9ec4f640938ad","4cc034251d442e8c2f32660ba00b05d7f7b553c1726d84f939c0940a5d928aec","a3af7151d6a244480abe5bc8ada397c9af55b3431df57672865c450809772fd0","8d7f9bb84a33c413af9063341c8f5160bc8725a67ef59bd2d044580fb9f3155b","65b176b4a433b701cea4a24b83deb2fa9ed09be9f26f9fdaada87e8434a57f00","a28f44db157d986c9333d9e3edce8ce71060ce7f7d8f4bff70f57fc26d48546f"]
Anchored
2026-08-31
Public log entry
search.sigstore.dev, log index 2657725656 · entry 108e9186e8c5677adf65…
Expected log hash
b4666dc064e94c6d0ca3a2e9a0c5f9ff5cb70ce3ce9e0a74343a10c712c15a62 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":"v1788147462663","kind":"published-quote","locale":"de","page":"product:smallpdf/sign-pdf/de","quote":"Es ist unmöglich, eine Unterschrift oder Anfangsbuchstaben zu erstellen","rating":3,"review_date":"2025-10-24","source":"Apple App Store","source_url":"https://apps.apple.com/fr/app/id1485259500?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 (d019a962265f…), 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.