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.

“Very reliable instrument”

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 3273053873

Proof data

Record hash (SHA-256)

39d3ddeacd274c33558388e1d5e956683df760d55a93ead2063391106605ae23

Signature (Ed25519, base64)

RVpBPDzTbsxQOpjp6cGe09bj27dXhW4FeKYRmCSstvLSXiFA4wVglvLnYW/vAUKiHwnc1Bd1PItvwBX1gXmhCg==

Merkle root

6953a5ba9bd00082fa1986982a5979aa7ad5b4654ec368f8d247f13243e4e4b8

Merkle path

["39dc25b39cce611271a00706c75b4e470299231b587c0c682cddafbfbd646a0d","ff0a4d13d078eec47b914b72ce9a9e507b1b81250dccf36ebc08ac5f0329c5da","76c7f2b3241d6d13529e2a51d659914f35f5556c9d42db3d942e96f8498735e6","780629d632127251e00f958ed6b2c1fee90e1c1071e5ede14489404cf55a5e61","efeb92b2e6a326f108a287b900b782cd739b37d1f26ff5e38afbc6b9b245fe05","5a9988b206a529cae65497e9b83f460a747fd98c5aaa2e3135f200b72e35b12f","ddb98ac88f32874d40f44fba08ba5c196d50c60bcc68259af8179e7f10225bb0","1fdc102af05d70ee0cb8ef059c632e46ba0d195007c516f5c1a9b003c2f034a3","63142bffd01d2996339600f988b7234948eb37d32564e4203e9c50f1c731d088","8fc726d0c38b2b9a65efa46294828b0ebd4324643bdf80c1ca945329c38cc7c6","7ec66a20f4d7a11872b07b7166cd1503633d9dcb47d68fb299782cf311510e8e","4712a5b33b6ff50d50cb0d169be1d0e243fc91c6e42666afbd10d27e6febb385","3d6624c631c3f201b337a52bc4f9494c99366c0aa74b4db152cef1b6807b4800","98a14e6f55278d0c3f64d31e6bb09545a033fdb7dd6455363be23426eb85b044"]

Anchored

2026-10-16

Public log entry

search.sigstore.dev, log index 3273053873 · entry 108e9186e8c5677adb5c…

Expected log hash

8e660c0f9c2f4acb2461077e20036379bc945573437a296969373758a8dbffb8 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":"v1792120102008","kind":"published-quote","locale":"en","page":"brand:metrohm","quote":"Very reliable instrument","rating":4,"review_date":"2024-12-02","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 (6953a5ba9bd0…), 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.