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.

“Sampling - 3-4ml max, measuring and saving the values, everything is super easy and very accurate.”
Google Play · 5/5 · 2025-07-11

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 2907673729

Proof data

Record hash (SHA-256): 162124da1e9de9509d60f9d7808b723a032b40af2d08dea542e2a5a5dd8ee527
Signature (Ed25519, base64): SL+/nAgGy3eGHVIzKmLSkNSN7ALOW3qnZNjzQUbFWr5fpxcoEH1XcK3y5sJOEzjSQv2prpEJT7BnOVINAJSGBg==
Merkle root: b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02
Merkle path: ["161a5da0c6347711a15598401e44905bc42d545613935c8ef963484c4d242941","718ab59aea78c2945dca272efff0f2e78d45aa558d5400e4c30b516ec585cc57","36d1a75d2d63b4d13129df7ca17816414efbfe7827b9012588136b75d927839f","b8f26326a3bf6e9a2cc85131e93cba6918d2ce90dddf93d3c2f9d860ea6d7341","81a4c25335d235c11c67b235456db0c48609eb77fb658bfd98b65bbf174af779","5c661b4389eb9daf18d221ea1df06987002e2c1a412e0af960ad2fabcfb39e19","f84959e7001e447d66d65e757d8f3176d5cc69a25119ea8f81b9063c3407bf94","80e31c946a9b5b80dbf7843379c14956921ae88fcdab1fa0ae6901ef72d5f1e7","4b812ea022680bae219b9472e7e9a18560e76b1ca08cf96bda54cd39157bd7e5","2016de9678d86bad6edc9968672b324b9656c8f5f200f1724228350b5b00515a","3dc35c856c0a17766a288b07a85209091ec3e282d680dfa0816dfc1ef234323a","8efd095958c52622b2aa6772a44f939fff2d831b42cabe9233cd8ccd2f4a438d","38643099e759f6b9db1dc190b469982c0e70d71dc8caac721f2a46ded3b658ea","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":"Sampling - 3-4ml max, measuring and saving the values, everything is super easy and very accurate.","rating":5,"review_date":"2025-07-11","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.antonpaar.homebrew","v":1}

Verify in the public log

Open the Rekor entry (pre-filled with this proof's log index).
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.
Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
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.