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.

“The Metrohm potentiometric titrator is convenient, efficient, and provides accurate results.”

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 2621591821

Proof data

Record hash (SHA-256)

cab9faff340b0919721b2f073f917853811e678ea2f1e32c13cb9d98f43830f5

Signature (Ed25519, base64)

EL0mvqgx5lQWC+/h0p3Jv9vaj++7yyHJcuiwxjy5AcS1MSnPOX2FNO/PLCQat68dq2hpwyie3Ny4nMcPwazpAQ==

Merkle root

80ef8d8174e5c9e41c4b3e86fd7f016ae3808fd6df1be7f458d6b538ad4a1573

Merkle path

["cabb9dea328378838b1aca19f89642f1bcb3aefa323571607b653d1f3a0d4244","824fa0185f8a4894d0c8521b3c6bc97a8ff25467c570af9eff232f59a11ce572","b739465c5bbe53c4082b79d99779e5b67151f28325b3c8bdade7c1807b2bfdef","89c009aaf16379152a7880547b9f32d4d785962abd626c809589bb4dbb8b5fea","a35c56320680b19fa4cdff7b93002de0921e150f10aa896f47ce3f5bdf9f0ff6","c8e298d945638886ac866fd6d50dba46a2e5d029885d934f5fa507282131b8ed","f91a19f22c0542009d0df7fd419b334b1510cc49670ab9f6f1a5d73f6a301e5a","5e3678d843f9aa25dba5b6f1fe38d60e6ee1896a30d94a3bcd6a0f639fcefe2b","000f6b5f0e3612cf3e9efcd2ba8fdc0db7042f60b9525da2393971f18ca6306a","03d58f820816bf9cb6f17b4136ded57982aaf3270ea7a85ac2e74fa322e63660","70217d94cbe2bfcc7a7ff172c0d1080a3ad3301a36a9781a13aa1fc8f3a92d42","82df97308f03a8181f3967033ce29942fc95b73b4a8590e7233f89c8ee94b369","d0036231ecae06fc40faf802edfbd71ba0313f6cbcd6b78e2686774ee1c9c961","39e0a5a8aea0469ddc4b7eb4f23756e8c15e3b75fe42ee4002904a9576881ad0"]

Anchored

2026-08-28

Public log entry

search.sigstore.dev, log index 2621591821 · entry 108e9186e8c5677aaebc…

Expected log hash

1103461f2f136c93d3dd608a948686a2f30160cf05200779542dada269979b94 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":"v1787890464756","kind":"published-quote","locale":"en","page":"theme:metrohm/quality/en","quote":"The Metrohm potentiometric titrator is convenient, efficient, and provides accurate results.","rating":5,"review_date":"2025-12-10","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 (80ef8d8174e5…), 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.