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.

“This app need Internet connection to compress PDF files.”

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 2595408668

Proof data

Record hash (SHA-256)

0c84fa677d75a147ab848e1c101d001afdeee0c47870464684e0a9e853f8fb7e

Signature (Ed25519, base64)

buL/lHn4a5bwTdyvSY1diCiyJbDhSIk/kOJi9O3vx3QNG9YaOfcfacQF71xTSDdQvBUQQbkP17pi+7sTy9bsBw==

Merkle root

7b9a4691b4a07ac5d1173e4626ce63916affc643ede736e9a42881218d31d172

Merkle path

["0c8b90f90195faeaff469fcd446ec90fe63f8f639a8271319dc2b9afc71c346b","ea1b6e26e9ca04407c7511f4bcf03812b6c0502447b391f9d61d6d6a34db374b","e496a6d89f58e4a7a1898b75e55220170e8682279050de2791782782584b8cda","b3eea34072bafe4695ade74eed1394e2075c67883fba5d0c6e8065f377096ae9","2db70b8850acc9c4b5419a934a429530c4f1dff95c294e164504b035a1dd530b","18fd5dbeaa63c0ef3760dba37e5581d2c005cec71360406b50bbdcf4d9e6d1b7","ea649003aa6d8b1cc57db6617a643ef34a9d87746b843cd86dc116a06d5732ab","c098db8c492a147d57c87006bc54aa54253134a90eb0717750cfc9583d8fc75f","e5aad05a3c783297938a493f7118b1e1333788d9f9d1f0b86f823323ebb1a37b","29a2e3218a6932024d692a2326c7686c58208bf6e86edf7fdf4f6611fbf4aa1f","c3e223ddb2a33abac9d6b7bbfcdb227b67cbec6b0f3c08f7058e148cdebde1f1","21bcfa0a5403e9274d8e9091c14e04623f5ac4426dda825a46d0463078e2790a","7406413224613615cc5cd19a127a6e24768c7c8638c392959ed907b3dea0b3ce","1a45b3586aaa1d52bf0d35f80f59c2194992fd40a7bb573af53ca4a9c5b2c40c","e08d96326ef8a4f2d48853bff915e1bfc3b77e83a5f37428fc0c18a79558597c"]

Anchored

2026-08-26

Public log entry

search.sigstore.dev, log index 2595408668 · entry 108e9186e8c5677a623b…

Expected log hash

7ea3454fafa335b6d74b2f12cf180783c952ccc9a9ba89af7d5ee27b01e07154 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":"v1787718572132","kind":"published-quote","locale":"en","page":"product:smallpdf/compress-pdf/en","quote":"This app need Internet connection to compress PDF files.","rating":1,"review_date":"2025-09-06","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 (7b9a4691b4a0…), 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.