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.

“Simple, free, and easily accessible way to edit PDFs”

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 2579634821

Proof data

Record hash (SHA-256)

04fdcb70bbb924fe08dcbc258a287a04a351cb0eb28645cd3f887d4b2bf971db

Signature (Ed25519, base64)

p5qkCteZR9/ZsogxQqlifS9EOrp9orVqI9hbzfU8vyTSV9/e2fNCsvBQ9/WktSZkK811h9MGI5anpMPZQvnxCw==

Merkle root

bc9d0b5d836a216cf1886934c8d5ec9f854ad5daceb587a6eb8badcbb84ee02f

Merkle path

["04fe4479ce8a2826043f28cd908d7d7f4ca28f441c9cfcc1efb6e4cf278373be","239e272938c58a7a30da6da149ab787a745b3bf290c8afab3898253afde3bf07","c444392f0090745a8f7ad92fe56f4edb0ad84c175c1990941619856af0cf37e0","f54d93f3bcb64ba7f6097fc7f1d5a9337d41ff251b31328f0711c88e8c0711f7","2d70b6cce04e7921f8cefcc90e8e8cdcf45905b6f0bd1f4c44aa6c866a90564c","5c2528f82608442b7f5581217479b9df6ea16b40db3cd8d406f107883433ecb0","cd33604ed9d6cad15d5f158e20a109ac38f1e81678ff49a49d11b52c77e662c4","d3e3f8613d75f6a5531b12439eb5189257c352143aa0721ecb98190c26097df2","543e17e902bcf1fde96fe0dbaea5e3243c9eaf6535034ea03f99efe1b0f1ec16","f430b1991a31cf507bf5162a210a869ee4440e3454b70782787fc00b9ee18436","317a785ebb6b175e626109381b2b5d6f6514b3205e736706830d346d81be547e","d3c9392978290ff4acc95fb24c00358022a18e8869378dd9b98ebf9e31ae3a82","04220d159462533e19180f38775a371ba8ff54ec137c48558e5c1452b7cae681","c78d02bc04c908a350115d0a3f5d200d8a666366962fbc37c05c5805c741dcc0","d687ea8aee79065a6ddcf3c31455804f88f0a27932c5abf16edbc09a81fa4670"]

Anchored

2026-08-24

Public log entry

search.sigstore.dev, log index 2579634821 · entry 108e9186e8c5677ae575…

Expected log hash

aa88a647802dcecd33319e67554ce6dc40636f337adca0214325bf9b390c4c88 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":"v1787544244896","kind":"published-quote","locale":"en","page":"brand:smallpdf","quote":"Simple, free, and easily accessible way to edit PDFs","rating":5,"review_date":"2024-12-17","source":"Capterra","source_url":"https://www.capterra.com/p/172606/Smallpdf/reviews/","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 (bc9d0b5d836a…), 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.