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 have been using this program for several years”

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 3240911465

Proof data

Record hash (SHA-256)

1937cd5fc9c2cfb4c87c3f1f09ca52cb8d8451567a8e470e7a5047bd62683fad

Signature (Ed25519, base64)

kkXQXmnsj62skFoxB2w5i1Zf00LU4u8vM+8fODkPIRIbpNYJValB613hcAj+BtJVu0Vn7K7xqGrBZmqD6cjqBQ==

Merkle root

274a7762154bd166543ff3cdffd566852c7127b7d67c5c835965884725fa5b5a

Merkle path

["19352b24d0130e0e67232dc85ec077a5a51b72bd8ee2c6dc6fe01822a45cba91","8cb7fad2411ab68f05b6a4cc411d19c2a85777a1291fe2b3ffd4af5d5f0872b7","a26c8d46cb33e5592b5b6b1e5f7c8bb54984994f446be3fcd1ffe66daf61c547","a6c1bd6a64763b25652d6843d38956a88c27e9e256413973f9ad3dbe819e42c8","c49afd95099e5bf66c265b291796ea0e20496ea286097e46fd5c62f59e32ed9e","72ed8330c286c4520ec60e013c0f1a85277fbb89a6e8ab7256ade575961c624f","c9ef8edba45472cb8146bbbd078d2cf2ab8579c8c7b8540ec933fb0ea1ecaf6e","a9dba9da720270f81d665ee8cbb45b86c4aca0dbf94263cab2848143c0c0ff92","1ace3dc5f66414a592bf609822f20a33fffeb84a29c6e392d90f5be33a5c5c58","642b925d3ccd67580fa459596bd58726478ac3abb40a1d3721254bc9856b8ffe","f4790315b45ac3d162447d1e34229640be176d595829cbcd3965f0a5a25ce744","a23f8c34fe7234d1604529397f0f25595125771d2c3bf2e0ea04339b7ae798ca","37e0bacf6aea102741ccf02dcd42b0de6a02c60397ad417aaaf9cff69daaf006","29e5b66d9f235b4df92caf0fbc75cded7863ab76bbe1924bd45c3ed8fea27123"]

Anchored

2026-10-13

Public log entry

search.sigstore.dev, log index 3240911465 · entry 108e9186e8c5677a3a8f…

Expected log hash

75e63ac56a22d308ee68ec8d436777d2fa26c934f80384e53bcc94d01475e988 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":"v1791863907329","kind":"published-quote","locale":"en","page":"brand:nordvpn","quote":"I have been using this program for several years","rating":5,"review_date":"2026-08-24","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/6a8c7b08b66def687c54f8f9","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 (274a7762154b…), 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.