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.

“Unable to export flashcards”

Checks (re-run on this request)

Proof data

Record hash (SHA-256)
90542931ee6d8a9998446655a0564519ecac4494fc80e651d091bd33ccea139c
Signature (Ed25519, base64)
Z/Lyy0V/ZL+fQ/G0FBC8uPTmsQuqoLdo4v1bSulDNHaVLTgdh7ww7mtkF1b4kY1dFuynAHg3OptQUQTbGVMLCw==
Merkle root
b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02
Merkle path
["9054a6dfd4dea1daae69ffdc8bb9a1298c61479636f84891edf44c44deec29e2","f6fb0b55bef1f783600c9732cdcf1c3c584e51f3afa823ea1336945431ba1642","9eb7fdba4e1e0627242af9d59730f3a0b984f718c63cee8fee9ce2e1ae0145a3","12907ca5c407740a3df7de81066abd652c386b3dd28b6b1c9ac26dfa760949a3","15f53e7516e91398a08f72167db56cc32d29c10c80c2a3687fbb0044c27d2b69","2d8aae033ccba1e1b0f747604c07d1b0311244ecb7f43d3da0ec6e2fb82bd77e","3711fcc69e203e291bc27a9efd6e8c2325d50e48d2c0662223f2460154571130","e2e17b93154f9d0ce9d2d87a09da3c980172a42b1ae1fa7ef089b164c266507c","d544ae32589cc66025325d35cd54800656159c4bb0d3c2a0cb0b4202d89d55d3","d285106698d21cc7e49a517bc9f384365ac996c488c66c985df813e3877a7de4","bf77cba02c08849fc4a9dd414e0e15c17e1f6b56a0b9c25793199682cc31bfad","86f8c9575acc759d5eac58ad776858ebdacefb73351960cc2bdae6ffdcc2483e","e73087a4c89fcbfd62483a37ad723e600377233e603592ed8ad92c5db69f30f2","05978e8b9ad5fd39833c65b8b951e8c80cf426334c441fa8a8bff8eb8eeaf534","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/returns/en","quote":"Unable to export flashcards","rating":1,"review_date":"2026-04-26","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.