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 3668590798

Proof data

Record hash (SHA-256): 79e49c4704175020a1df99d22b6bc01ff3458ab733f6af62e474c0fdc79290ef
Signature (Ed25519, base64): y99y6GA/t4MRnIIK/MxZVv3w7I6wFOBTC6ixV5sEb3WpjwnIrkLe85xDQiX/NUuPrr4erff3txrRSQ7yr5IZBw==
Merkle root: 2d5c5745bb08542103114711fd42d520689060248b05b87be89b8ac779cb9fa3
Merkle path: ["79ebd06545d2b7ce9e94dcfbf54d5264e292ca1047cd5536a2901fb9de6280f9","10d1143e91296b8edfd85a0ff6e727db2014336ed2124e4f5340f7f0df55efe0","ed3f125e9f2e4a296096c9f9715dc6e30ba3b6cf8b7a50f1ebe15d328e43419f","c82c6db3995ca69211d760f8655316d2c3612578794b55865165412624f562eb","6a8fa831cdaeb3001ef66348a504578a025ebb71b5ae29182f0469980e3f15dc","6903a10d359e9ac55a71650e93a8f892d4e2338b46d42371dee0442d4b3e34e8","633b7c9bebbc37fbd322fd30e9458d47a3b1deb7e713dfefdfd604cf1b474b0a","ee9d02dcebe4eaa6e267d2cc8651cf9e20fd35ae818ef7ad37452fe7d2b72dc2","6146308d9105bed93bc8befae794e414aaadeffd408786b72997a966303e0f9f","61fabe353024151fcf3fdda3d240d33569737d50206d7d0c9d47aaaa21e9825d","49fc021fbbc0254b588c91ba4cd18fc287cc627b3aa08350e9607ddb798e099a","6f02794a66f48cd51b9809ebcf9fabedfd04b4524a0dd771ded6289fbb5166a2","6559cfb6e02d82e98b805956e4adca3f29c70eccaa9b705ec81b278c9da83d06"]
Anchored: 2026-11-03
Public log entry: search.sigstore.dev, log index 3668590798 · entry 108e9186e8c5677a31bd…
Expected log hash: c5f232b23a7a0d0b1f2817c4d619127f695b0afb4a7021ccbe7d935023a45c7b 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":"v1793706397400","kind":"published-quote","locale":"en","page":"brand:anton-paar","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 (2d5c5745bb08…), 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.