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.

“SmallPDF ist seit Jahren ein unverzichtbares Werkzeug für mein Unternehmen.”

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 2621558263

Proof data

Record hash (SHA-256)

087684b6b4cf04c6b057e6f38981466b10aec9b073468f9c0263ebfbdd16eac6

Signature (Ed25519, base64)

KKL7xZ7qaPPqouiqkOrvZl6eS2Tz6mfhvqX+FLdoOdk3SUBsN3ou5+pfN0ieJDuLHXs1QO6kfpKVVgFKr0kaAQ==

Merkle root

76a70861058eff5ef068585a821790f9f0f67bcce12a1ce96d55cb6d986420b7

Merkle path

["0886e42f1e4361f93bcbf654f13aec8774a05ac73bda410458512994e7cc032e","aea18595d9a7ea540d89a7eebbe9bac2afb70a6e16a603adcee01f83c89afbbf","09a930c227c93dab8a1acd1aeb9f25fe0a891cada779ac9b377beea052d0ff3e","638cb8d1b8e743cc6a7af975449502c4859864106c12138f0c71483a289189eb","bf03b1273a2f4052f83dea6e96229eec3437b178946975c1f9ab6cdb2e4ddcbc","a46cb4840565cce109b83226239f2ff09526e8c922a2e70c0578a41368e00df0","a09407dfd2ac154cb06d11ce13bc15c0b8bd129fe6d571322c283f6773cd262d","ce0fc755cf7b83b042ea640eb33839d77defdb8ea213da4784e89e31efee5a65","76e256c3bffda426008d582a54d90a2d8b8aa1a9b25405f73fd6dc01a40aba2b","2b8b173372f2a950d934b0bfe96f0b31c7a016ab97f5bbc2ca4109f8c2bb4d62","95cd5fd7fee37caec8f7ea06401a33e5474bee9a9f0b6ae63f9cc48dae292ed0","885a56f1a8f590664f08008255c1eb2a74d0d0a846d6a42d92c2e2591556db98","33a24b835ba41f8728ebc0e33693e8ba0fe91b47741da4e5756ce7fa9eecbcfc","b0708aee6a3da06da7ce07abfd9012194714f3e4ae3087e24e97cf8d1c46ebbc","02ff7ae642a7c307d0ed4a3e268c40962e14ad4fc94744bfb27f110b29b33c79"]

Anchored

2026-08-28

Public log entry

search.sigstore.dev, log index 2621558263 · entry 108e9186e8c5677a13d1…

Expected log hash

ed6aad59be4bd5b7ebab65a83a91c56e9ce506952d0d4a22235f03a556d0f54e 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":"v1787889797689","kind":"published-quote","locale":"de","page":"theme:smallpdf/quality/de","quote":"SmallPDF ist seit Jahren ein unverzichtbares Werkzeug für mein Unternehmen.","rating":5,"review_date":"2026-08-10","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/6a7a25a9cb5fb18cc8ed58ef","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 (76a70861058e…), 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.