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.

“Requires subscription to edit”

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)

065475ae607f5e186db0a695f973d622ee5de767ec7333923a17faa0c8560728

Signature (Ed25519, base64)

kYo4GwvtAVi8pTXNGmUBHdGLIGCT6q9epsNwH05Nw2E8JieaMGYvH7VvejAQh0DIJmymQ2Mk2VwwXvkJSy7jCQ==

Merkle root

b3122ddd7ae78437c88b5c432d1d272e932d99a36327831f741296c5804e0eec

Merkle path

["065a872a465284b449092fe3bd2efafc5ab2003ae710589ca80aa0993a79d7ae","effc470a43b69e5f557870d51ebc2d0c04b2ebc85f1e8a071447aa3857671ad3","52dacd5dca6dcf5d2aa0e5f008c789a6e15b4381a2d6a9d84250f455ef7d2bad","e6822a973cc45a2e443f5752cce781c6954b6bc89e002e5c16a8cc69795db362","8f7c62c06f486e39aae5ff4167316cf03ba37737990e8d2cbe4ec7048c32159f","73c9903a3df001f4d57f3d5df1d7f2b17a6bc600e6793d6f5797b05cb862aa49","6065bd41da8b287062f5c35b240605d18619d69b35c48c253dcd032503db631c","6a76f7c5133f93e23ec43a1aaa953ab5cdf7308a36f00385cda80a1f3d87d64b","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":"en","page":"comparison:smallpdf/en/cat-convert-pdf","quote":"Requires subscription to edit","rating":1,"review_date":"2026-08-28","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.smallpdf.app.android","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.