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.

“Absolutely wonderful product”

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 2621946731

Proof data

Record hash (SHA-256)

0826f5e4478cb64f79d9800f73f78b86cb4f6af50ea1f41b8b19f8ef100298b1

Signature (Ed25519, base64)

4I+DF+sSbUQnotrCKhGjTF4exH4FAq9WJYFco7y9VlPhjVM4LiWy2ZiMUua8pn0JGIupEsswrFP1QVfoo7+qCg==

Merkle root

3dfdf7381c8d7ad52c2e382f4e16b6f321af764e7eaa340297113fa50b9a0792

Merkle path

["0822b5c8f3a8dfdba08aadfcf733c00ce0b0c57a98c1a22e4b4bc31e91841bfa","7b1b4d34c77e0b134af52427e4cccc3cf7c1af8e290f51bbbaa8437dacc8399f","0bce224f10ad71e8f81c7b1abf322635eac1a42cca6d8c02d15c8e112fb7ec97","b4d568a3c8f0f38c01c3b68489a2b6b772279701c816a7dc3f088a53d862cb34","b676f2cf8145fbc61d1868e82aba97631cd725bb9c390b02829765039633b24f","1869781b6e3842ee2115f49d5a612a34755b025afe3a0acfa0d9251e217bea6f","7aa5e18835ffebe4220de21ca89f6d36232e1615e80ca08d0be7c1f72a8ed5bf","da1283b77e998fde1d2dac72b110fe49fe052f4670c348c02c904d0898ff3114","a013ea9393789830c3444dc52720278186360947cf3fd2ce023aba36f667f5fd","52ff7e4d47fd44aa1bbbea0639f6052ee70843863a737e5ed1717bc5f18e6ff5","a969e840d4de72a9205543e10906b676b72b32979189e08f13c86083e720650c","81f5340bb1c2a0054bdc2b1c036e86ac1d05247316c250aa07dd756a5b01354f","83e63a6d799b1ceb15f089aa785a41ce6f782296862900005501fb5bd92d886e","81acff1af3c2bfcaf656a4ff2b93eca8121fe44c1d5b5a4dbce370acad78d2b5","377cd45c8c0bf5fb2c54ade6d9c4a053bed5d007e1a30f5279132a3d565864ef"]

Anchored

2026-08-28

Public log entry

search.sigstore.dev, log index 2621946731 · entry 108e9186e8c5677a0a42…

Expected log hash

ea07e2ac95e2432412286c8e9f169e876b2f38f9762d26c0a0ce3cc128edcf3c 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":"v1787893493942","kind":"published-quote","locale":"en","page":"brand:smallpdf","quote":"Absolutely wonderful product","rating":5,"review_date":"2026-07-07","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/6a4cfd93646bcab3469a1f43","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 (3dfdf7381c8d…), 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.