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.

“Manchmal ist eine Umformulierung nötig, um die Fragen präziser zu machen.”

Checks (re-run on this request)

Proof data

Record hash (SHA-256)
f83f296860c2eb9632a5ee15be8de90218bf3583445456945035602b50de0698
Signature (Ed25519, base64)
OAyEW9tp4FFBG16acacgSJKvuvN1qRwLMdBS9aLqA+CErOQ20WIwNjE4NdcPS/e2pcgwFsPXz76acWqAw7TvDw==
Merkle root
b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02
Merkle path
["f83df984fe9b0443bff9bdbc6c6a092f2f1482a11b88e638ccfde25653f31f76","b7fa7d0c109f1630793318f4e0df2c25273d4211fbe5a6f2d5ab40d4327a8c71","cc75da26d0fcf0649339680262d40872c087b0fbbb85de80107a8ff7504ecc23","3d5e79e8455ebe4e24c148b9a65696dd175558f2ddc9a76d2689badeaf732953","91ed6dc2480ae0dd730e29a75910216ac7e98964d726ea780b2d7b4eaa07bb17","06246c1a9967385f79ba5a8b7252d6d91db4cda6bc21ec82d3d0c2e56ccb606b","0e0df693f36fdda9fd6a181c1884157fefb293b3a698dfc1ef01809338509b3e","fe55fd9d252f89d901285997a2e8a2241e0620ad7c33463bc28f91baad80e2af","bd32e511be05756fb012a40c67cd1716cfdff1134d00415aa8bc41d5125d6095","d32c39bad5dce323e576c283506b6fb7150c1c5a45bafb8288504a1620175dbf","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":"de","page":"theme:vaia/communication/de","quote":"Manchmal ist eine Umformulierung nötig, um die Fragen präziser zu machen.","rating":4,"review_date":"2026-08-15","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.