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.

“Then after that they tell you the book is not available.”

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 2515033577

Proof data

Record hash (SHA-256)

3415a71eaaec47110e5c6e04217487c852e6218e47560c535936063b75c620e9

Signature (Ed25519, base64)

cyiiBxPENU/FGi+BAp3pxOokalPMP+3AYNdeTWuQRkGcDEbJfBj6iIlvOHQVVw75jyyWhQOkJ2SoeFjn7qSGCQ==

Merkle root

62390602d5b1801b2c96dd61074fd5810278db65461e368ee19c9bb147d249dc

Merkle path

["34104fa83725da821642b9354e7557fb9d94ed699a627425f525cdaa52d9d3ea","24eb640229b18e217a6a132dd10e844d7b2c5dcca3622be060a9657111a4154b","1d808aa6121d4f88f86c1f88553e40ca6c3e269226cb5c7bf50a58b990f344aa","86f1c8a79d4c0a4c22451ef9165bad8205845aeea40d6f2a6d95113a93473976","b9030dc17536929b1b6c9c3d1d2149a208d1cb873fee8e936faff7eb868753e9","c9d4c16e2e12fdfbb076fcc745e42b225ee9affea6cde341045c357435ba0736","b9369530991d83dcfa77d2c7fd786aac9e06b06567295088f55cea13088c448d","c97fda060e4557e364e08d859cc301c91f6c646e46f563f4348f0e3fc1b62a33","1b6b440078f6314ab73b6eb2c22020ce8fbe3f537d61df50c478959a7da25efa","f126eae3217bdf9d280164d09ea9d9e5474c5f3a0a2fbc24078a5a916a01e944","0a81532ed18dfbe4c35a4a310959295e895a1eaf400073afc4a3c8be8882821d","c8a985d29fd069b48125bdfb11bf27edcb5cfa1446e752f56ce2bd2dd58dd173","f75f5f1e00dba7cc7ee2b8aeb382748de199073ec6ef3e4e45223ece56d4b910","67ecfe5896e15a16726f3975884f00c44d75c0b203d4245b5c0b41921a024634","9092fce07a46a5708f071a70ba5ae2d3ebe27de5e813ea1756180e7747d7c5d9"]

Anchored

2026-08-19

Public log entry

search.sigstore.dev, log index 2515033577 · entry 108e9186e8c5677aaea6…

Expected log hash

458ac564101d02a2c8a5f98465ce4e920300682f0855e017234ab870c48a16cf 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":"v1787135948936","kind":"published-quote","locale":"en","page":"brand:yumpu","quote":"Then after that they tell you the book is not available.","rating":1,"review_date":"2026-06-09","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/6a283e72f0f58f017a7a004b","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 (62390602d5b1…), 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.