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 am so very pleased that our charity is a FlippingBook customer!”

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 2513802575

Proof data

Record hash (SHA-256)

f3b4d67f917c03d243d9ec1f9cb84a2e44f4133c64a5de7d5f4b799a57f620fd

Signature (Ed25519, base64)

pI41rVsiDLzAEUIpF2H0XhGHPHTnn+CBOX43ow9+n66C+aPjgoWZGhG75jvWGEqx3+y2xr2irgEJZ3vQbvA5AQ==

Merkle root

80de158564b7616572ca0c0059561f6ec90cd5bce49a388e61df989f3f6f2a86

Merkle path

["f3b0276a20b9ddd5cffc709f2d5838cafee45e392e6b8d6038e6a061a7d95d50","b9cd6a4e33f08f6f53d89f06e877d42ff08e818f8803db797d9c29bf71fdccb4","417baddbf2552666e1468f785aa011e8b586ed245692c2cb72c6d1082d136869","537ca3c16adc2bc4571ac084d0c138074e2bacf5ea8bbb22893f8e7c0ddb1b35","d10eab83797f792160d982903697a4ffddf40d4de92bef0d8c9c73e7d8460459","dc463444ed8996c789163ae4b0383c47fcbd8de49eef6ed7056448f4cc27b9fd","13ca094487a1547f3119ad5f861dd9f228ef876896adc8fadb4fe3b94efeeb9f","4a10225e5683cc3913f11a58907b1b005b6acbd8200f7fee539371d36e5fccf7","58481b7dd99c3239a1249f8722f4aa6671816e02a3bfc3bf2657b4027c48512c","aaf8755f725ec15e1ea524d92ece704f57bee0ae84156ec4222386c59abb0d43","80d3969abdb789421199847380743d9e40364c21cef7fe30a643d307a281c9ce","3313dd0f5efca87d347f162963e654f8f97b434abd08d651e0c6d5a5221a45dd","a005037a25946b6652855fc44de7f4032ae34c31430074646af4b1ad906e77ec"]

Anchored

2026-08-19

Public log entry

search.sigstore.dev, log index 2513802575 · entry 108e9186e8c5677a9216…

Expected log hash

5899b5d0ea18fa3c879147333708054c2e3cd77662f2b6f633aa3b5d5512bbe5 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":"v1787121142818","kind":"published-quote","locale":"de","page":"brand:flippingbook","quote":"I am so very pleased that our charity is a FlippingBook customer!","rating":5,"review_date":"2026-04-10","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/69d901c8d70a0a28f93764c8","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 (80de158564b7…), 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.