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.

“Der Trainer war sehr hilfreich.”

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 2621712605

Proof data

Record hash (SHA-256)

ceeb0a6e1e9a9e9aef3953b84bc7097ec76ece265c9910cf6c2da48d7705a48b

Signature (Ed25519, base64)

iINZC9fDb3xQFpKZcMxJ75q76uRRrOkMqN/NNDR8I54GqtJqX4iEiHnyyHX0CMhJdX+t9kKQ6/3twgg8SbsqAg==

Merkle root

25b46ff2419988f674720a0d9957bbe6130bde21af352d10a6eb7fa1bd87b90b

Merkle path

["ceefa80c033ac4369fea99df7a8ab5cedf365ff895f9ac08d1e31757f28ceaf3","9b2ee719e27a38a4904ba0fda9d6a23707d463fc72d9b84eb58ace18150fed54","6c4a104736f0b7c2abd249eaaf250ed0a520e0f2d7334b1b6b035cb826b3ec87","a753fd8bb89988329c00f1de5b49bcd694812e332fa2fe5956def79d1ab1443d","1ae3489dffafb0c34145ffb4acfa07f67cba70befcc15f9e0f1644dddee74ead","51dced05989af66bd233a67378c6ee2c046b77949d41336157e52744ab0fd21c","53ffd34a84576c82e3050955d56fd9a516a903f1f4f5b2f863197371ce4b942f","f7f07691c2173c647955a69d3cece24caca7b977de9cdb36861574be662f3eee","a6324fe9a4b1dbc3347bd2d929a9ac3d3de0dee17b7695edcc9f2cb8311faf1e","6bf4f876f4b57486f85f60cdf7d39c2fb430b5f15b356015bf8521a8be80ec8b","180c9899e964057a2b7a719f292eac79f8a5eb3fc79d6397ecb49cd09f77bc08","256c4f6aeac475be9226d763009ba87094ff3efc954cee6dc852ebd41a1cbc7a","fce01ef8df707fc73de7966e3502123dd4f45228e1587b58dd482957409dc87a","de5967a743f2c070dadc15eb9e9e6844030fed4f4b117704648ba7bffd2bb28f"]

Anchored

2026-08-28

Public log entry

search.sigstore.dev, log index 2621712605 · entry 108e9186e8c5677af8cf…

Expected log hash

e2d66cf3e23cbd8a996b6d44d305e387793b999542b5186c00c4ffbadc30715c 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":"v1787891207850","kind":"published-quote","locale":"de","page":"brand:metrohm","quote":"Der Trainer war sehr hilfreich.","rating":5,"review_date":"2024-12-04","source":"SelectScience","source_url":"https://www.selectscience.net/product/omnis#reviews","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 (25b46ff24199…), 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.