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 mein go-to-App, um PDFs online zu bearbeiten”

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 2684387116

Proof data

Record hash (SHA-256)

08f5a48b1c0ee38e2f83373dc9f67a225f20df73acc0aa385b7f21ee08942be8

Signature (Ed25519, base64)

e/0qsjlv0L41vqhXPMtu3/YD8ytckpNfYbXDfR3eRdPWPRbeEH0oKwwkwRDxXWXOji8+AKoU+hOF0KZ45/PZCQ==

Merkle root

d0b70661cbad9870508e5f30c6bab3a4dc29d66832512b824255977804a209a0

Merkle path

["08f5458569dc12cab3ca17bce9f6922380e22cd123f4bcef85eb300566188a27","0a2d3cc294baeb91fb829355fa4b337b4c4878665f922621cb0a2e6afef9cda1","4f498835deb9bb88a6ede510108255d5fe4136d5626a1714c92cb261cf77c003","4bbaf253ceb89c87b9593e22b2121f32b72b4d5271ff6dced6db0530c38eb161","641adef7cafd4087a753cba2396826f17eb9fc808c03cbce74299c9d5eaa9818","39085167c904aee0b9e8e8addd43ccd186ad3795a2552825d3f974c8a12a9a3c","e347fd962caa510239edbbe16570bfd3c4aa9eef8a3dae4874252d99c243052b","5f523981d6ca7029db105f8ada3e0f15c50db870ebdbe9686336693d94122bd7","86806f36479d7525aac8154259267ce9a1c472008cecdda0ce11e250cbcf1ef3","5ea8d15fba70a19057e386e6ba17e0b570ff821a9b3546d1a1f64220895378e9","30ef131c1b42caf7a117903a4160828828f884d626d71e3b669267e1094478dd","b4af94d7b26230f0a6961e3de9864e54956590f505f2745e07efed952b99837c","921bfa249fc083b70570168ad6f0044f00ea537ce97a9c11974276f6897af836","99fda29bc9f6523d8497d7815dc75cd9349f33ce2ca8d7e40a1376d7992a019c","882092c4a89bb94a7257fc3160df609ffeea1f42eae2f25e3f48a7501ec86c7b"]

Anchored

2026-09-02

Public log entry

search.sigstore.dev, log index 2684387116 · entry 108e9186e8c5677ae3e3…

Expected log hash

bfaccc200433dc8febd06ca2b510bd6be59a9734953b4b277a6d6f8b4877f779 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":"v1788338905316","kind":"published-quote","locale":"de","page":"product:smallpdf/edit-pdf/de","quote":"Smallpdf ist mein go-to-App, um PDFs online zu bearbeiten","rating":5,"review_date":"2026-06-09","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/6a27d16061c17e23d6e7e161","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 (d0b70661cbad…), 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.