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 2657086861

Proof data

Record hash (SHA-256)

04fb62fcd91953178c91df01a556125652c07ce1adc846cce30b063d567da248

Signature (Ed25519, base64)

Cen885G31IuwdF4+obCATHBVueZoyOBCVsBGgJkScOceycMdFLpiI24hwThrl+Qc5z0384eQSt6Wzbdr79vmCQ==

Merkle root

82972b26bec55a4dadeb51e0ef4817fd240d012a15b1107cf4ff41b6bf857f2f

Merkle path

["04f99ee99aaa1cc35b167bffa5cc6f623b24843e1e965a3b28f214bf24f19231","2f5b3d34e1e706e14eee5f687694f74ed581c540bda966cebecb8d8f4f4a5fbf","7a9e86fa5f785da238aae9759e666e5c169e57d57141ad62d779f8d4d8235618","cc3d1e27b5ee42361036fa23a4e6dacc09e59d68c2f1c8cbc9e62f7dd7b861f9","6e303af2ef60a88a3e720bd0754c4b07a52e8156a6ab96cade56ff639289389d","051be0f5b50f66d7d7de6191cb3c15cd2221cd033fee54b87a53882e7ec77eec","098734aa16eaa8e9bb08083c968995aad169462b94a47ea60be54e477bccfbda","0425418df86335fad4fe996b05e0816762dd54225ef755490ade6f332b930489","7873a9283b8bac41851b8c12bf4ebc558b996f2c901ddbb4560b86d7ba4d154d","4cccdcdc1d60a58a857296dba6ac0b681967187e194a8d7c9a4965beba43b2e9","c01c413f1eca2f2b8f01b6bc720381e368a84fca420e26e68607f25715a380b7","bae19cb10ac53f9324ae9d701f1e918fc75e9e05c7a57a3b9c634ca6056288e3","6b680ff8f968dd80e3ff74aa3a067ab4e5daa264cdad81a3262bacd1ac87d56c","73fbce4f3a295bbae478090c5a38fa056d3343dfc0fd9542392d2ae79d50f95d","f4e711c857ea1ba2d5a944450f4184b26f960d0cb1b2b63658495fa9a35aaf91"]

Anchored

2026-08-31

Public log entry

search.sigstore.dev, log index 2657086861 · entry 108e9186e8c5677aa85a…

Expected log hash

260fef646429d420c2862b4a127a9c4a79609ad273de18fde93cd5e796c16b27 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":"v1788142990944","kind":"published-quote","locale":"de","page":"brand:smallpdf","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 (82972b26bec5…), 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.