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.

“Therefore, a bit too expensive.”

Checks (re-run on this request)

Proof data

Record hash (SHA-256)
e41680162160f01dc6d9c84d6a443b9d762cc04812cc0743f8936c2124ebe1c0
Signature (Ed25519, base64)
oelSq5ZIKSkravcsGGF/tP7oRn3ngzVF5uUrTTR4XOqmchK3uRUCsA+TgQWXf3gU1db69ID6WrVmFdpmQCMQDQ==
Merkle root
b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02
Merkle path
["e41209b2fa1f6280541efe0e88860e220325a81f8031ddc11401c084a6e3f72f","e58a9d636b2e59a7364cb3526755af61d9a42af4cbcb710ccb993d3afe2b913a","6cb7b559bd1f5db78abe44da7de0a784ffd836cd269ad87e14981546b9a185d1","65b209b382305b828f9c7b764358e97e0d38a73e51da904649b80ee37df7a778","2bf8e72a3cb498965d5a8a388df252d10f7b73c1bcf8e7157ba967f44006e6cb","557a16cd24f3b5b0e6ac97a481ec17351c1b2bd91f99f3403cf3619392b69022","dfaf88a0bf6a5455e6e4004e8744ae372769e564606078a2f747cf611482b5a3","7ff6c32b029c07152b66d53846d76d0c000b61213e5fc9218c27370de3ca749b","d373daf32ad662973d5f725a3806dec950667d43f3fd7ee71e87943d20c4ff87","bc8d09f0ad2cebfb648e7c5fa31cc3fac6a7d447cf4af4e2417b30b049b62ef0","bb894289bb71d3b696c9afbe454a75a78b206d9839b23e1a62e36de1c4316674","2d0841904d905b327cb803816e73e56fa86447bd28a90f792c27c874ed9a6b9c","c975f4076f62a76765a4bc502e988829db65110a1650004b828d2dfb5f90a9da","f92a7fda99af63eb008476cac47b147880eec6868f847624f8b438c917195408","4543e8b9ac7bd077d9526acfdae449f0a0d5517cbb42414f50ef930ecdb9470b"]
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:vaia/price/en","quote":"Therefore, a bit too expensive.","rating":3,"review_date":"2026-08-31","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.studysmarter","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.