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.

“Sehr hilfreich für meine Arbeit”

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 2514383033

Proof data

Record hash (SHA-256)

0d147d295250d237607c0e5eb0fef33be9ecab68fe60ce7cb8b199af395ccb14

Signature (Ed25519, base64)

Ke+QQARw6fptY79WRlCYtZn+JVNvgzwqoQnbjpBBT0lB7I4qCXakhEnza1MykZEfYPmaJOZn5kNmvtqcaMxkDQ==

Merkle root

197f899fafda406e0c9d0591eaf3664c281655082dfd19c34045187b374127b6

Merkle path

["0d138792a3c1fa1aee1dfe71607a9bb29cd7371e26092008c8f3f1a7323b2428","7f7fd5aed4a552fb198450db80e1d3c1c644ac12ec4c0910f12633091508cd28","8135177a032288236b3bfcbe9bab2c3a90d43a734e008196bac5b0bdd95fd1ef","b1efabb805337de17028cbabc18d1cc3fdff1a8e373cb572f4230e71316d95ef","54f05f27eaed3aae4a696040562532e01624073c2dc267ccced16fa5ec9b67e5","fac79c5bc990f00bce56c44dfa92bdd36c83b62291be4f278d5db7b28349921e","6d3a1eeca38e8f6dd1a14197be9eddc1a745839d0dffb026ff781af43dc86697","da7292a7a486092a99baadd773182cc81159b0d94dd2491f0a21dc81ec369880","70f12dab24a8c8212029239a48ccbe7df9f1eca09243d2a90e880920e1b92446","2c70efe49f45be528c69df78fbe60cd43a269f4d8ffb4c3320a19ea634ea98f5","b5571d3aa598932897806e02f48e0016701c260085a00c41938774111e0f3fbc","df8a7c6e5cde16b4c4ab3a58a64fe01086f546e7d0c17890ee9b3ae44a54c23d","474f5e3eb7f54ece02b72e34f56037226b5d12684c5849615376a356c03ed7fc","043ba08436a7a593c366180e52159485eebe8c0b0baf9b9c62f4c2c637b226b7","7b5d4c2155ce4f6908bf1c61cdd8b51ce48d7dc7c5d7f3bd9a7ce68fedb43f21"]

Anchored

2026-08-19

Public log entry

search.sigstore.dev, log index 2514383033 · entry 108e9186e8c5677a6078…

Expected log hash

4e5cbdb3dc34f3dbd6a57b603e905df6c94968b41f5bd83d5c9a25f2ea060d8e 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":"v1787127398505","kind":"published-quote","locale":"de","page":"product:smallpdf/convert-pdf/de","quote":"Sehr hilfreich für meine Arbeit","rating":5,"review_date":"2026-07-26","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/6a6632a2f5051823f6e2f8b0","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 (197f899fafda…), 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.