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.

“Es ist viel weniger frustrierend geworden, mit PDFs zu arbeiten”

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 3668944551

Proof data

Record hash (SHA-256)

049a784141d0f1a8c9f4d48073d00757e386d99102c2c7d6958d5bd9ede207f0

Signature (Ed25519, base64)

DIAxipqTKymOwWSPy3jTIMXkXRnn8J+Yq/GvsXldCPSmonV1uRNdATMKcSwFPA2qPHhn3h6soQ/ECuoXXyFlDQ==

Merkle root

d8f145f4dd25b18e2b87daaf2aeaecbfc54faf99bd3bfdd8f74aa4efc5886bf6

Merkle path

["049d4232043c9aea5b7d6806b6a871fbd3c359ea474221200da5f689c16596c5","5d599fd0c80e437fb0703429fbdffe007de837d1852afe01170aea05a2d321ea","2baba2b4f1a9cd79543fcc282d46b606582796e19ba2d00dd6d23cff60e0f5c8","8328cde2bca55ba333a4cba8f75676b41c019151dc27b65fe07b487580b68495","68957773b624a50bfe322e325fd3ec7a4266020f8163e2a856b2ecf395c0ded9","4cc5d6bcc78625c4e44e169aab69dc41b55501e1705fe68321df69fe12d77432","595fb82ecc2becdaac7ed2c292a0db8185f18e9f8e1a39bddea61ad784d80dc3","f1ee54f50a7ea3e3d33c582262b8f059a47f066cfcb7a6c31bb7ebf2fec25dfc","c49b7602c10b14e0552aae42d086172f8da3886a97519fb48bcac531f94e199d","1b5e51717df5dbd79e213b899204d445aebc84015ef81819b768505201356e27","201d44a330ce43627228498a1a6d2056de77241b782d03c819087e11ea8adfec","2e900c12d34400e39fc8c3ebb99077c31758e236ed2350484065df834f416d2d","4a105e509823ad7c5361d9c34172b0c0d78481a597dbc352d26fbf6361d15520"]

Anchored

2026-11-03

Public log entry

search.sigstore.dev, log index 3668944551 · entry 108e9186e8c5677a0e24…

Expected log hash

29b4e6eadc957394341c639515bb23b43b99093d34033c988619822df54fe84a 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":"v1793707472796","kind":"published-quote","locale":"de","page":"brand:smallpdf","quote":"Es ist viel weniger frustrierend geworden, mit PDFs zu arbeiten","rating":4,"review_date":"2025-02-21","source":"Capterra","source_url":"https://www.capterra.com/p/172606/Smallpdf/reviews/","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 (d8f145f4dd25…), 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.