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 2515282333

Proof data

Record hash (SHA-256)

fd552b740e513bfa1aed02d29f200c17b12c57520e647beb4f44f2c5bf2c05ac

Signature (Ed25519, base64)

aoDyJg7wynSEQxcGKf6BrfU5HyB2ExMWNbm1TVSQSAAfMnoxL0DBTPsdAv1aILbj1uJhKvX3fgqL0DvS5npbAw==

Merkle root

ccae92ceb3dcfba104788424188fa34a8cb1410075ff6c1a21fa513e89f0c4fe

Merkle path

["fd539bd9bca623da3f6b2c7d18077dbbf79021ce25a693ec70f411c29709cb4b","51a25ba1864f8ac3b5c34e16ebe9cbdf43c079bc1bf072aa46c4ddb8520056df","e039c812030e0ab7efa7fd35998908362902dadf46c108a06ee39788ee91732d","3d60153c0f0e381c2be19d4a0f365bfac004098ea43824a839abfe6a64d0d980","8e0126423f8240ca709204927780f698021e4df7d598a121b8451e25c701e3a3","19fd53f958fd01b5518c6dc9cfe9f555397e769251f2da166351d08e74e0e556","f7d23687a5c68192a267a2d99f711c9e674dce1b67a83aeae11404157d8aaa85","f0aedcebecb554264d093cb159cb2b5665de31cdb1ce8159db8d5564ad383094","e80672f2c3c875bb82683fd5873f07b2ef9fb704d50c7c0755d5444cd9054f3a","56a71614b25272fd16b60145692ab7c920f317a986a8ee29008372426b594fe3","82d3647695251b0bf39fa76d3bcd41586fac3c92b9b6268eb7d59a505cd6418c","4e82d1ad9dcfa0d3ace9851421e159f426bbe608eea35676f6b709bd111096e2","2c6aae0c21fcb52f32358e37c05f651b94e474293ca87a7bb6333f77cf7ec65d"]

Anchored

2026-08-19

Public log entry

search.sigstore.dev, log index 2515282333 · entry 108e9186e8c5677a6652…

Expected log hash

af455e73500113c158c8df9793eab703ff863c9c98fe38560752c9a1772810a8 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":"v1787139531268","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 (ccae92ceb3dc…), 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.