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.

“Great instrument with less maintenance.”

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 2621780523

Proof data

Record hash (SHA-256)

ebfd4e5bf0a558ff44f1799c628c3671eef7b6455b6cb4b3abefd0c3c6ad38cc

Signature (Ed25519, base64)

pjP5wkOucGTD3/yoUptFEB/yXOpp4q/GrutoJxVLUNgJOJYYmUE63X0ILuh6CxCicCElsfI31HGLEl3KLKhXDg==

Merkle root

7b426d9a8e4778c60509753003c7b551184ce3f76e1db9b678c604656c147d81

Merkle path

["ebfda6d54bc2d6953bd1990a54942d623c5660c9685a25248a863627f9f9d990","e372f29f56bc03d34b8f67f2fc3f03d2ab74c7728e750eee05406b438a895576","b549fa2fa00e7d9491f56b6c89de315024a6a61a9ce2cba0dd4e3e7cb555413c","ee224fbfc40f8a305031e430b81c35d4c5586b3339d18c0d2604966f81f3a61f","83cd3d4b47445ca1afafaaa36242bda4fb188a3314afbe0975c8af2b76647770","7a1bd0d158a1f9e184de4e2d3871a83cedef34ce8e2d64da3a56086763a0b8d6","a2c8aba86d334c0a5e0ab00ffc05b6135a722f7712737afdb706fab91f7bf58c","e0eb1875e1de2d5322a269f23a28761cd3974fbefe263523e3eefb9eea826435","2ca654fe0e9e4b4896a191a6febd13b333f198cdf65a4fbb029e6a436dbcf24e","625388472a47e15955ba69e8bf5ca26e057b69486f9f362daa818056abd6d98c","759e304c8074b6d86fd8a9b078530d00b56ead93080808a9b90c1d6c5dd6841d","8f057c4aab4c8197e2b19c70f1027e1e83ee816ff92ae5e30b2fb4adb3a9d7fb","8de93e7111b0620c206de1ed4c3cdb8e0242cf0ce102b04cba74b27a6adc3dd4","5cfd3f01cfc088b9ce004c6cc4dda4490d6ee2e150a101125197cdd0e0e5936f"]

Anchored

2026-08-28

Public log entry

search.sigstore.dev, log index 2621780523 · entry 108e9186e8c5677a0666…

Expected log hash

8cedab57a40119bdaca7f2b5c6cf9bb1e2c3e69dc6a6b7339d16a6592c70750e 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":"v1787891923870","kind":"published-quote","locale":"en","page":"theme:metrohm/durability/en","quote":"Great instrument with less maintenance.","rating":3,"review_date":"2024-10-17","source":"SelectScience","source_url":"https://www.selectscience.net/product/901-titrando-for-karl-fischer-titration#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 (7b426d9a8e47…), 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.