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.

“They offered a book but required I open an account.”

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)

f72b2a10c64fe444f689284fe8541f50f30dd01a096b539b00493102c0bf8e0c

Signature (Ed25519, base64)

KWeIuNiahGvfJoC+YAR5KCRaQteM/2xB55Wj7h7WM+jqX3DlqeVBAXKQP1uiOTltFeUa0bDHOdAycw0xrR0qBw==

Merkle root

62390602d5b1801b2c96dd61074fd5810278db65461e368ee19c9bb147d249dc

Merkle path

["f71b42ee7547e50233654e6906518827b0d32b0193cb5e08b5c20ccd216934fd","dbbfaefa92c5fade38c96e70bfdd17dd3aa34ded3803c48082212a59d191ae4a","bc95846414f2166f6633f98a17855c75e145f03653e4698ae692519ee6d15bbb","b3c9ec9e147849f9ff24e946c542ed64e4e53bcddd6a195ed4e1e8eb52fbaa7d","79859723bb7a38a707f0a0087f011c73d26c78b74050d22c6d892f89c656436b","2630b970eba33e3abc9a7ba37101179a05ada0aa55dba30e7d81d0a060f71483","cabf7f9ecc8be7709dd4d76a48d3dfc5e9b46edcf9dadca95149a8955eef02c4","31099956d4b2234780e268aade6fb737a945df71c0cd6224c085cc453460e721","d566cb9c89d71c994489537fe2ffa8ad59f64df606ad34813072ea3e380735e6","6413fda37a9c66fa8c629137e637e2cbd17bdd8ba822cc2dc59faecfc47087bd","1b04545f3c202b025cec838fa73d2a17cb98e80ccaf12f3f519d12c437a8a5fe","377139030ce6dee03810e7f38bfae3d3df36862441f5f2621ca6d22dd21ba0f7","17e33114dc02b67ed59a752ab775223f702cdee87d0b28082386d0d64e98d9fd"]

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":"de","page":"brand:yumpu","quote":"They offered a book but required I open an account.","rating":1,"review_date":"2026-05-16","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/6a0889904980510cd85f7cd2","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.