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 is the most useless PDF reader/program I have ever encountered.”

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 3102753131

Proof data

Record hash (SHA-256)

ff364b2f6e3d5833b0b1cfced0a795c30f3ef2e86e3c74cb236751211b9c8402

Signature (Ed25519, base64)

Z7M/5dW9tmwkC9upziC3OiXs7ilsxX+qd1nWB01GDyQLuoXG+7wVWtZ2d7BLVUXncpJXyjDTWk109BfI3cZnCw==

Merkle root

92de3fc6370869ec6c1d0482494ff1816d45e719fbf27ec8d8d02933c2b7c658

Merkle path

["ff35c407bb32d3ad2ee851aeb5701a1ad7e1c22db8c04ef360072ea7ad2a89ac","2e36f0a9db0048a2c6accebb5e8342b18046629e8887bd338d9991e28f9c396f","efc95e94dbd295a44ec894b75e1cae670608d4193a58b67058d1b034f51969eb","67ec92676b1c4aae9e1eea0a39cea914d11abced4c88df7caa4733f0523cc938","c060c5b410320c820fe19e7c2fbd823eb337ac08df8fab4d66b80356cc5b70c9","218408af9ea0d14181dd60d341e8f481948d6c0ebe50a84b252283304d567af1","7ae5f21dc4a095a5e00d79c3265f2d1704e51edfa328ccecae8fc6c6eae67d1a","f05042a659078b6392726061e480b1d9fa6ca4f1e323b8379773af69750d6e0d","b74a42a6fe864877efa16111b7bc2d973ac7657518d9e4903a0d58fbfc9a7c08","08a0055908a411996e818a7e2a4a4c37c06f54805b13350842e11497690975ee","f1f0baa260c22baf4bb24da156a6af6d0a74380d96dfba378baaea19b621a25a","ceff30bdf9ea8af4e513ae73ee474cf3a381b0c4c52950b68d1baab339b603d0","c3a054d0149b6ba893c9f6835a95f324a05e1406f9665c11f96203fe902ebfba"]

Anchored

2026-10-06

Public log entry

search.sigstore.dev, log index 3102753131 · entry 108e9186e8c5677a9761…

Expected log hash

5cca28352ab3a467a358005e8b17999e96a5be0f2e71c2152bf575d4cd8c238a 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":"v1791264491480","kind":"published-quote","locale":"en","page":"brand:pdf24","quote":"This is the most useless PDF reader/program I have ever encountered.","rating":1,"review_date":"2026-09-23","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/6ab3eef05a9cdf1066b1ffd5","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 (92de3fc63708…), 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.