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.

“Ich habe Smallpdf schon lange glücklich verwendet”

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 3240422411

Proof data

Record hash (SHA-256)

0273dbb2137f6d0a1609a4e12d701db11fd6ddb1d366954cbdf2672f97c1034c

Signature (Ed25519, base64)

bXJHowp54ZOkithtjcsp11aYgyuPi3YAEeI7IY8N8xHC6GizmwBHAOXQNc5pKG4fDb37W6J/7w2OVF/ThQ/IBA==

Merkle root

825dbc6ca55f00c6c81d8de0f7a080bad31b79dfa0e721dee7ded0e9c294ebb9

Merkle path

["025beef2151f1e1c353cb6e3e5a956253ee0ca954da6b4eb0701c646347739af","4d837d76cd5f07ba091774b09504d9ba4e5d6b7a218b33b49ecf6c8011e75751","2b972797955747e241d24159c6df2c67219a4ab900ba18c1364206bb71f4c397","6c4cd54a736e8acf369f3903c0d4aa3c132c8a9478de1dea14c9d205234548df","3ca5f49df4a8c3ccdb6f97adc538f5d9d5e8456ac7a4566f13313ff21e460e90","40df89486b72bdb48604901a6833ae5ed3307bab90c4a4db912a561cd9757f38","277f8d7537fbae8617eb0486b6b5a91f5af0f0d50168563656ef83861066e5f0","e3dd11aab4d9d11212e06f27fadb9e907a6b070c7f3ecbaa2c883635dd57773d","8e4cafca73730af61e510b30de29c01df651dd4fab82e12e248e97de4ba8c09a","5090dc5c0fa0aabe56cef806251e888576df73cab4990e2c04a3e7fb3b88d3d2","febf287b7c32a2fae856dbf526e351f23b5b8476b4c1b3e342c1def13e494cd5","9c0c076fec2f0fa7c1094b4111d2e5cedc7ac35232c509cd9a25439361474b1c","1e2e9420d8c4747dca96dc342727525f4c47cf2390ef42ad69829fe37156235c","04c4bd8a9ef95bf5648c9d023612bd1f2446e83a6dcf83e612d031a5ea30e90c"]

Anchored

2026-10-13

Public log entry

search.sigstore.dev, log index 3240422411 · entry 108e9186e8c5677a0ea4…

Expected log hash

8667b0db28913263098c19cb6387cf64b6d68b1b8f2c4242d3139d96cef5da0d 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":"v1791861703078","kind":"published-quote","locale":"de","page":"brand:smallpdf","quote":"Ich habe Smallpdf schon lange glücklich verwendet","rating":5,"review_date":"2026-06-25","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/6a3cb7ab9cf28a5f23c03eb9","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 (825dbc6ca55f…), 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.