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.

“He explained step by step what I needed to do.”

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 2515144749

Proof data

Record hash (SHA-256)

fc700b896db6e331573ff1b66e9d8bb97495c058795a974fd5df7e90c344cd9a

Signature (Ed25519, base64)

L5YssQs95ttl2f1eHmvTog5i5SQhUNz1URmGyWAjwtB9waG4JND8O7WFoISy3xshMLNBLo1aF+IKuq7N4SMcDQ==

Merkle root

8a6ad893af0f0bb6c448016a777af61f3f4935afd82df0db132e64f813535715

Merkle path

["fc77cb1547a86b8b07c54c472bfeee10fe4566b412fdea5b92e8aa74e191c7cc","2b81e52c5bee3270861be32a358970123f8e86601df76400a9c223489bd07c78","6b7a2bababe9886872b3b1b039bfae9a9f7eefe02f7e407099af54ec6501af58","76d93389efdd889a0cef430c97c5d9f2521b22640f701deec814e5c59f564a77","d30ce13a1fe17491289d99f748b7aaf153322e1de96a0dfeef96a8fa40caa9e1","4c9d074634dee413a9d276df0bd9e42328ca970e3be0eb57ad0ef5ce70e9f357","74372a53f5037650437b06f67ff7b56189385ed2b36b0492fb168212ac9ce3d2","8cf1757cb4267112b42ed6a4e3a278490a7e2b515d0116631699441e62f422ac","7e87399231274edbb642f63e33420148e4cf18e463caf560158af453f15c5736","8b4642ca7f21f2e2c7b769b7ccc1a32528ac23fa6ba4187baff80bcc8e1cbe93","e935a047d05ae025b873abd86951bd3a367a901bd3cb04fcce7237ba3fa9b9b9","5bc1168c47f5724c35ec8610ad8e7047dceb7d2dc8be9a835d1c344ea14431e5","aca625c2c743c13b7e188c90a8dcb2895afae601815729b8511e9bcc31ba8968"]

Anchored

2026-08-19

Public log entry

search.sigstore.dev, log index 2515144749 · entry 108e9186e8c5677a63b7…

Expected log hash

b6b79ad662332330e69c4ef135f6fb13ddc70048f846024d496aaa533f7f7fc0 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":"v1787137589246","kind":"published-quote","locale":"de","page":"brand:signnow","quote":"He explained step by step what I needed to do.","rating":5,"review_date":"2026-07-16","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/6a5863415ff0aa441e185d27","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 (8a6ad893af0f…), 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.