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 helpful for studying”

Checks (re-run on this request)

Proof data

Record hash (SHA-256)
fac4e371bfe14f9164680a5c6a6a288ab2a2ef1c4eb7f63574921e5a5549bde1
Signature (Ed25519, base64)
kSLJhQY1sUBpCZt4KCeWCjkJ30YdZXQ26JAmtpieKO/VUYKfdjou0+Ul6AJrS8D0lAFqHxIhBc3ksqtmQEopBQ==
Merkle root
b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02
Merkle path
["fac4b4801bc1410a2af2d74c2f4aac4ddc368805ee2443cffa2979c81e36ed90","a65b5808088fb57a0369d619c4afe3ed693c94e5674e5abd07062808e67202df","e36e73e55a7d3b64f09c1f73145eacef7e80cfac31bd382df6de1f2f6ab87de1","ce28e49d2ba22961e162feda250b556d64bb23d31592847dc10d2af3a5ed3296","6ffc239a1d8a1b161bdaaf07d025b7d26555166d5f3eb3929a31d752fde94470","1257a77e0806d35ca37f3e2c2e7af84a979825aa638f8535f2941cca4c00b99f","0969627cde2149d1cf8ca91fd0bcab9c3fa6c40a7261926617f22fb165d4d801","03169b9fa65c1de61f71607b3902e7721e65efe2fff54522a1af3e22135bbd0e","89f5db981f3c36e2bd96bfe8ec811080f96e08be49c465cb33f78852e03f71d4","e34df4682f1b51d069b490f515c441bcce6394d17d5ce5081e762d6a54690971","58fcebd1d3d07f3a6ba5f31279f2ecf014cdac37bfe65872be1ec5d6a456940d","e89b125d6d75a826a464fa50668f6e82a6668dbc929bfd3fce7c23cc14adfdbc","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/fit/en","quote":"Therefore helpful for studying","rating":5,"review_date":"2026-09-08","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.