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.

“It's quite something to turn a 300-euro measuring device into junk with an update.”

Checks (re-run on this request)

Proof data

Record hash (SHA-256)
47d17d99356e4c6fc5f7f9633bc2b99acd80ae1a487a8d0efc221c2c92625799
Signature (Ed25519, base64)
YcjfRrhH+zc8LAppu0FgjxYcqRQQ1NOJp+zl97U9CM10CCkDo+mLJ9R6NLgeLl5249VldfQ3z/0lfH3SWWJNAw==
Merkle root
b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02
Merkle path
["47d142341a61f79a0935b6476326ac4123b7393624a1d1e5729a499ebec40e00","147fbac50519acdffc21b6f5d749e9c5f46e5d8260940f94cdfe056b2dab6447","e7b969a2f41aad5825d2173351f7bb303b877ef4227e2ba7de0acbcc80c6741b","003f05907c83a55243786f08f074193b477f05463c46f582439891af84b7cf2c","cabac751d6b88d25efe23edf2420e49a0063529dad13709968378bf71e9cdd8d","258e435036bdfb4a56ddb84c9b5516aef83bde91e6ae0925e5438cbd20964380","4b59b05e28f4acbbf09f26f010bc934474ce7319540b172f4236b5b99f79b45a","9b964fa08def195c30705fa5efecd794155ec364a9240d04b3ef32c61f72ed33","731affe50523e84f8f412139db0d7336ba09391da208302528654b37afc508cd","9efb833d6cd4439ebae5a73dac2c6a20566779d2d0dd01e93e31c3a29163e876","e872ff0eb276cc0ea0ac8b3848489a979ea5a1ac479562bc60b28df50a3b89cb","94e922a61249c96280c1295d8745a971a94793a7c2dd589ff7c2b71a4d71c1e6","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":"It's quite something to turn a 300-euro measuring device into junk with an update.","rating":1,"review_date":"2025-10-04","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.