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.

“Steady, consistent compression”

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 3247778771

Proof data

Record hash (SHA-256)

09787ed6471e38737aadbd24a23ce8c156539e83d0745dc6b658c37c0e573480

Signature (Ed25519, base64)

x1VEEhMV50tJMA3ljQ19EXDUCeDEhdRK1p8ptE1ZQHo3sdyxGp3gtkfqju+9XQ8/lzLCBKpVarnigWhe7X+dAw==

Merkle root

85ce153ffacf452dbbce3fe1023cf2b1831b0714a52ddd4756cd932ee6118eca

Merkle path

["0979ea29325932f65ec0030001a1fcd36daf3b913dd39082647735b56ef3c640","76e80369c0d53a443bf878f2100f198fb26d4be079f3b2192632185d2b05c202","842b561c793e3f52e6efc31804c444cada7d37ba02efdc8660eaff5c28c1bb71","32636608d5336b580c2c40c0a6e6ae613c70154e1a0c62e7928bfb4efea3b02d","2914406efab8f187815ad44391556e65661b7a69667d0dd3d46b717ef504498d","f47346d48d6f740f4e6e4feac62c186c0b49a9edde88c5dfbb86883d47b2048a","e19a6ac643d3fb8566ee0468691686357c28bb00c076ca9725d3b10d13fd5055","cda132b1f5f3dcf3a8d9773b49fe9832a179a22b36fad17279670788a2bb695c","e2791929864363aadfa7204361410c635185e17670c5005134f52422f3bf7ebc","71d558ff6fe5082421ce32e9c6d04e500246d82f6253c55da5225c683ac39f8c","4aba4c8ff1de29ad0b7aadee5c2e476818f79748c266e2c70c52fb9d0ff85fe7","6c2e1c6197efd563c8b55fe8aee10bf08687b45dabbbd2a77d804d15e7fc26bf","18b18f071e9c71d8c36d555f1bf037316eae5e015564bc049869377ca5d7af3d","18e09dc9351f249cc916f25a12a638ff411aa18455e8056b5bab6122f75e7984"]

Anchored

2026-10-14

Public log entry

search.sigstore.dev, log index 3247778771 · entry 108e9186e8c5677a205f…

Expected log hash

d4527e154b8f284d35adc456cc8f260840ef237a57e84e3d79bf64cab7ccc901 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":"v1791943580112","kind":"published-quote","locale":"en","page":"comparison:smallpdf/en/cat-convert-pdf","quote":"Steady, consistent compression","rating":5,"review_date":"2026-10-05","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/6ac3cc4a8faec3a18ffb79b1","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 (85ce153ffacf…), 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.