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.

“I now recommend “PDF Signer”.”

Checks (re-run on this request)

Proof data

Record hash (SHA-256)
fc4918bec33d69a854fc23c62585392aad15f3a510903d08e7b623b940e7130a
Signature (Ed25519, base64)
fbwbx+vvvWr1Rxd51znGWO/mkVpqVBameaXyHXwyFAepabvaq05kgqh5d4pSwlyMn8yDapfeeewmkvyLFMkzDg==
Merkle root
f8b4f722de05d6805a889681c3818dbde0f5141f0c8463f2762c4a9a02d66a2e
Merkle path
["fc41a6ac51abe12f1e56f0f17d2b76d18c63fc5ee4fe2366520781022897a508","436f5f90cc7794e405452c5e87a25938b005e18953a29e2d094ccfe700529642","bac2ab93d83ef003c59f31ffb0875e350720600d9ac2a41445e4e15e5a1a7a52","5e76b3eb62496a308e3e8eda30715709e82ee350d9857a6fd4debbf057a98791","332623ee7009cfa53dd04540c4ab9dbf28acf405be897bb1d3457ae944393a37","c0101d2036536b7783936be22ce750751e89e0935fd127cf4c0b1c0cd8eecf38","6a9f938428af93a469efd0067c914fa834796e21ffc4fe234275984d6781e8dd","8d010cbdee09be4630a5b3f593f57fe8790c0b8cff85878bb0633161f8430ad4","dd091e4b0f1b3b6b9dd2f854910a158d97b1f08679a8e1bd83c13470fb56b2bb","0880f57ad2cb461ea7a46b7d518040b61b47832137006fff284924a4d08a85c7","06f7a93baf95476f593ddecfca04f326c9a79ac740314e4fc04c944d1561aa03","55c8c6eecb85583149f9a1265629d0d25028f7f86ae101a9b330baaae0f213a6"]
Anchored
2026-08-20
Public log entry
search.sigstore.dev, log index 2524422814 · entry 108e9186e8c5677a9741…
Expected log hash
e042bf60ab37eb8951abb7a408cc8c7483ec875b9606253deec7a67967130ae2 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":"v1787192294432","kind":"published-quote","locale":"de","page":"brand:signnow","quote":"I now recommend “PDF Signer”.","rating":1,"review_date":"2026-08-06","source":"Apple App Store","source_url":"https://apps.apple.com/us/app/id489262811?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 (f8b4f722de05…), 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.