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 2543025731

Proof data

Record hash (SHA-256)

37933996a1a304aa1c9359ee6a07ad4e5454dcece581d55396b4192b13cb7cd7

Signature (Ed25519, base64)

KTjchjd8LlFXofGGdO2b2NNIgrzI+LoZ2caEBhu9mUWQVfa3/ptq3/vm4xxZwpHqC3J0l4gHrndPbtpFBNVLAg==

Merkle root

172a3e0b3c9f8b02f52318e01ba6beb899404e00e91c15eebc4dea38467e1404

Merkle path

["3796705f393a4b7c09f05c0402858f898c1d8bf072f4b35284e546d51f54c682","f4cfa62023a0d0b744a031742fb773c781cfbc30206847508bb5f052d27163b8","8bc9802c65a162001c0bf330c3b67eecc7a0fdb68078c86d2cacaca6a515cbb6","091f7048f374826f4414c2a980b6f131b1989f4a94cf2a590b81f610a30c3196","2f0f4d855c28c53ca6846016e53761e1eeafbec63a180ee004d99cc533e4c612","a36a9c50018c547fc53db1d7cd676c4161d890f2d5a32ed35735d0c2d49dfee3","2bf2444aed77f46fbc29de541f49df693bf8322daaf235b6c1baee3f3704235a","1184f61802fcce0e39b86eee6cfd842545dd88b4e1fc28c4a9f33febce87b4d4","76c2ce7c90c8a719dda45b27a59240759a8b3766d44cb0828da0d8298d12fb10","618778b867b4b9e2c7938de2530c9f93050ddcaf846706b055095f6c96cbcd87","05ef8968dbe470db7837f3db8d2ff36006bcaee1a39238d5d50e30bb4bcc880d","e477fdbcf6b063496ff2a3252cbfc14714816788e388193432a67f7882370e8d","09afb18deb0eeaca577b5271c183d4b7283e7366611f65ab999ee122c433eef4","b2e250a62b44b0b9c303f91afd3aac8852fa6af504d7d68ed736141a3dd71161","7731d0ded4f51d151ea3e84474d1e27a6279e8756420c93cf5fec0abf7f11add"]

Anchored

2026-08-21

Public log entry

search.sigstore.dev, log index 2543025731 · entry 108e9186e8c5677a8971…

Expected log hash

19ecbe4a66d8adbd7c6057dbf6ed9be73485c248dba1e0c595279a908b3e8bea 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":"v1787283443958","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 (172a3e0b3c9f…), 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.