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.

“the free version is just what I needed to have a PDF cloud service”

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 2682933759

Proof data

Record hash (SHA-256)

15cb9873e02748066f5cb703bc3b5838f38c2c839e955fb43f6b6e451c475273

Signature (Ed25519, base64)

+ymYOBHwnbK86ZH7liX1qZYB5+LCvpKAPKKJvSS6/Y+tP44Z+p/ZNn8gdV+ZVfzK1wid/WHH1wPvvrnUm7dZBw==

Merkle root

4fe8751e7d70c50e0cd3fed6e9eeb32edf31f624f79d82d9ec3817eddba7a9fa

Merkle path

["15c1d0f02f16632754e510b1f17b3d46f7bced15858eb0c9f874959bab80ae00","b7a99da8baf78b6ea9f079a44c00d01817862e9ce7cd8bea04cae49da10a327d","969af0852b24eca578808881f3171fce8daadc175fa22a5c92a6aefc96cd065e","06f2e0cf14abbff8c2124033cf69cb2e3474f5a062e8a66647e974edff51cae5","ec40a98305d694107600b29b9ec197a847ff022f89342dc9d2b2b1101abacc55","42e08d6f512b4388cce8ed2b6936a7eff4ee6800eaa53358d35eaefb29f94920","6d5def602a82130ca5a2281b551d9cf479e490a9be5ba94c3358c93aae35f20f","fe689004749b9bb67a1eb1fa924fd0ca811a4d5e4fc4fdc29555ab70523cc97c","4f107a0a48529f40e3a25dfaef92456224714230b58aec34973b1e009d17a2b5","1d76c67b8b691149996850b78b52d871debb226a372c23421f47cd811983c726","c061e77f19604bfdd8a993bef0a6682b48bf319c274e699219e5340fbeafb50b","e156186e749fd94aed5a129f465f57a129de76642c7051b32f1250d1a8accd6e","ea18abb121143b3c16bef9bc5a13c470f569c0ce0991c92429fbf586994f4ec4","b949a5b1fe3c5409c484815b6b1e0675f1b11819a9236a5e546056d1971b9a8e","1d8f51436982e85b24ea8b1426a5f0ee7a81143ad75096c92a05493708dbae01"]

Anchored

2026-09-02

Public log entry

search.sigstore.dev, log index 2682933759 · entry 108e9186e8c5677ab48c…

Expected log hash

d15c976489915f93c119ef146e715f5c01d5064a289c9ac130af05811dc83d56 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":"v1788318759763","kind":"published-quote","locale":"de","page":"theme:acrobat/price/de","quote":"the free version is just what I needed to have a PDF cloud service","rating":4,"review_date":"2026-04-17","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/69e2758ab741ccc167062403","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 (4fe8751e7d70…), 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.