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.

“Das ist mit Abstand das beste kostenlose PDF-Tool”

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 2684135818

Proof data

Record hash (SHA-256)

072a80026e1e804f574aaa459578df39fa2f920ca4eb856442ae2b8991f5d4e1

Signature (Ed25519, base64)

TMUKcWyVigt7E0crsTjpJ5mwg9ccD1RH01A9C2hhy9WNOIDfb2i7iuXzCJ8PdqUy7E4YBnloLYEtaw1t/Oa9BA==

Merkle root

b3122ddd7ae78437c88b5c432d1d272e932d99a36327831f741296c5804e0eec

Merkle path

["072b5219697f6fa0f062a5ae48ba3fd98351dc6ed75d6d06a082e181a5b66214","a3d3891544f1ae55e501d0d1393ad83602082cee900ba92b9d186ebb5eee5066","353c8076df6e84cb7859adf3ead1ae4815337cefecb7c34dfb6d51feb4ed2c31","1ea0f0f59e37174bd47a64c15031a87724c4b9eeaf92116d7ff95886401c06f2","ddf7c0951b0bac135863d783ebe2d4c5292efe2a8abe633af72ad5d44ad20d8e","3ee1fba786eddeba3c50aa31cdd2d8912340d476e706881c51572dad00c1b4f7","75a5565f5db29dd8db889de26f537226419797db7708ac176ed16ddf07e9c401","cc67edc918c312865079fed6433cc51767d5a5f6a6e7444d9fbceb6a601e9693","7416a9a348018b0dedd3e2cb498d430cfff533543e23d00391ecaf26cfb9a0a2","806419acd42e24b3e77b51f4d552718f9664b7058ced279a206a9b5929ba4a63","7487c17bec724a864a363618be371822be9db6289741afe9b6a794766f7b5a16","afc410f4c7c2995a0b70eb5b9073e0604c33387ebf2e2381b9760ff10ab70cf7","c22e3ca4e13d6be34d7e2d787b0073655e272c17b975ef51a9080763273d2609","e0f5a3f9535914a67d876a5c4daca45483a20818791753e411dff623a270df15","3414a8c2f9a037e1540995688a310f939676497d9d86d0c2118ec57a53e60c3b"]

Anchored

2026-09-02

Public log entry

search.sigstore.dev, log index 2684135818 · entry 108e9186e8c5677ac65b…

Expected log hash

aa65ff4939d7df1f40b93b48ba8bc57094c1090543a7b0494509e8f24b5559df 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":"v1788334509514","kind":"published-quote","locale":"de","page":"product:smallpdf/edit-pdf/de","quote":"Das ist mit Abstand das beste kostenlose PDF-Tool","rating":5,"review_date":"2026-07-24","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/6a6308c9f376196423331994","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 (b3122ddd7ae7…), 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.