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.

“Modification is no longer possible, so we have batches with incorrect measurements.”

Checks (re-run on this request)

Proof data

Record hash (SHA-256)
28f9531e78ebedb3cf3f26ff201a7a06dfd2aeb7ca19e534b9bcf5f19fdc616a
Signature (Ed25519, base64)
cpyuXV0T9U/sPl6OGCxyiIHppCycVqlwxrUVmgT6gJJzO5YuYqQcVKg/I3gyEIJbfPMtfnEEcLL92O4V93hSDQ==
Merkle root
b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02
Merkle path
["28f7cf6924db546c17cbc75d45ac514dfdd616a45b1fb429548bc22a20392ddb","50ac07709c4f3a77e606fc6e9b71596640d6dd28cdeeea79bfe470158b5bd8bf","7552660cde9eb6995c3bffed44491a5237d9e2a4531821b827d637ecf785cb89","e52da16ccef7f78cda50a9a48075b71c90113d84c2a85bc4612f040c56cdf58c","b3f2dc335591c8b536cfefed8981c54fbfc3a887c61b63891407af336a97ab6e","c8f040e8847f3fa56759c4be2d951e25919a57c61e83b48d24171399a12e506d","a3c5934411c9818305435950d52f4b430f244afba4988aeda97297b454b61b51","8fb281b467d31c9ea52d66a97a8f433cc81b8f947976b3d71701dc136f47aa89","2eacdfb4ed2ff307071460d7d08c2e835e950ee36b1385c60dab382d1cae9ca7","a4f63aef9675334f37c0d836196ba77418eebdefc05a2de733d60d78cd8bff9e","fb2e37e7dbed9db223f5ad70359e5e571e728737b5bd0b91b2b4db8ad5ca71e9","c7178b4eff2fba3e523e57ffd27d883eab0b92aca9ab4febca6b4f95755695c8","17354708d69221dcc11d442a2ae8d1a8fd9ce3422f52e63a29a599e2bc987d3a","7a4792c9dcf9466d19ba61ec3efd4f578e21f2d3035e8fa6a6264d3045083f7e","43a562d6822dab12c673c1efa0a3171d1ef69b949f676fb01847e1e5b56274de"]
Anchored
2026-09-22
Public log entry
search.sigstore.dev, log index 2907673729 · entry 108e9186e8c5677a06ea…
Expected log hash
bf9a74000249ba6e66b1e29aae9d8cb95c3400dc118569a80e5c0949f3e8ac62 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":"v1789969984102","kind":"published-quote","locale":"en","page":"theme:anton-paar/quality/en","quote":"Modification is no longer possible, so we have batches with incorrect measurements.","rating":1,"review_date":"2026-02-15","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.antonpaar.homebrew","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 (b9a08f9d6d76…), 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.