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.

“I've been trying to sort out a simple billing issue with SmallPDF for weeks.”

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 3121837738

Proof data

Record hash (SHA-256)

068fa8cd8f7a6c04a804eb1784d6ccde5e36df905f45af8e7987fec56de63797

Signature (Ed25519, base64)

MFRMBX/2pHDVCcqv89P7956fIEjDByx8qNM2U8F1B9CkVIEGeF0c/3vtqS9yKUE5W3NorpeZSbuU1pWvgy/uAg==

Merkle root

9d32c0cbfb02966e7a561566f948b48040888a6535c058e814428126106ff945

Merkle path

["068fdcb8c0d51379bbebb22f40359bdf346880b3e5c18d069208225e7f3bd71e","ec26c78d2983aacb264ad5ca03e664bb1b62660dc3097f33954edd52956c7601","6fb02e9e9cc821eef1332c11a6468b2e9fcce5969d68cbde0b519c8d5dc68ed0","5c8640a72bf7d2485928c50ee392020c26ff7c397b3986f3dc3f568be356e761","93fe0dff101d1f3f99657837dfcb1d2f60e706102c742b4a19ba44779d33bfbe","316a52211abc8e7f0493ee5d97dac4bc08844fedb04a7a2414addb967fdff263","4256976b0309b279576e9507b1be8840511b953699b1ee0eb5cc7e85c5f2cc47","446ce02529639fa82a89de2f94ddc0367e0732478ceb5ecf9fb03127b3de1180","1041cb12d71982cd2ed37d30c9a981baa6c97e69ea514a87768ceb212afff827","c3ac6733466e9d5190b84f4302b24a938a94e0159d87d7ee31f8cd49dac37ac9","99d81213ba6decedb355f5edfbca7c016e7767d53afaa0fc37946fdb6d4c799d","099f7d3196db535359fcd86eeb99184950451a46bf171aeb6e1628c4c60b8490","1b6827f0620411d457632601225bf0c0fa08a550569ab3a9309e36b42067eb0d","97b419a98acf461915694d49df1436895896a22d4e853073303f64e609656c20","a892fc29bb3c992428927e47e35596c876cca06d89acb4ca102f2a534ba3ab13"]

Anchored

2026-10-07

Public log entry

search.sigstore.dev, log index 3121837738 · entry 108e9186e8c5677a0c6c…

Expected log hash

a0090149b27e60cea52dd7dc5f0abf6dd7c00feef65be2874742fff2aa9e8bad 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":"v1791340487550","kind":"published-quote","locale":"en","page":"brand:smallpdf","quote":"I've been trying to sort out a simple billing issue with SmallPDF for weeks.","rating":1,"review_date":"2026-08-01","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/6a6e51b8ca9a85fd739f54e4","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 (9d32c0cbfb02…), 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.