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.

“Lernsets sind verschwunden”

Checks (re-run on this request)

Proof data

Record hash (SHA-256)
9e2a65b7c965436edc8a4b14b5c70f03c979e767e16bee06f656507ace2a1c64
Signature (Ed25519, base64)
5BWQP31b+RyKWQZSDos8fR+MXTFoqnmqx9CeTHz04WZaVS6d6ItVZCQdfNq3+tpcKPg0WdV0MEeidjwH5nVDAQ==
Merkle root
e299bf38720a5a91bdf63bbc0205245bccdf3432ab1652c69342549658b7a9ef
Merkle path
["9e2a5f5f2eb38463e5fc274246a877738ef004c98d1b5508cc57ffb9ad4dd599","5bebcd2aa16e74af16841529520527818ad323c0126b21bf0dc90e465c46044b","246ddc3e5d870c679edcf9f5c61b1bb5f4774bac7fb8fc7665bfc4403ad99c64","f83fd1d7821cc5d4190680197aad85e048eb80616a73efa5b756206d013f2a54","28c89849a98448384429f8425b81834c7d1a0132dc29275768918294a9e61bc0","2b6d3042d69f4a77b4c5950dd10d831e71f296e4cd61eb5019df76331fb37896","3c1f9dcd5a2bb6be42aebecb928e34c7b06f657510876ee7e05da393aacf1514","a6f70c06c1a48856e1cab8df82415f31213dbbb2a74ca505a5c279dbeb7ed4e2","4f4b6630e2c4e36f63d5d878bb4ceb31c888b286589d974b09511b3732de03fd","72445aebf1d9fc469248c1809af39dae4de7b03ba26ea5cb00c225422cbd320f","6d2c471b82300715f66f5dbf8b523ac1e6edc072f3668c57fd7750412f90467f","81ae0d98613af401743ec4987802323d53d8fda24ce374cdf2d369d04f6e8e3d","b5d03b72964f911025dbd61c2eea673598b47768b7619e9a279966a44a138147","e3714293de39ce3c6e3cb9d5ea7711343b19d2be532c75504682d8ef52e8f91e","2a462314156907e42d6f0d96eed96123f1d79516aef73ed189d9f5466556b638"]
Anchored
2026-09-21
Public log entry
search.sigstore.dev, log index 2904877428 · entry 108e9186e8c5677ab408…
Expected log hash
d020708737f55ccdf49203f373fcbcefe8158cc388605556fbfda3c365de7360 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":"v1789881486272","kind":"published-quote","locale":"de","page":"theme:vaia/durability/de","quote":"Lernsets sind verschwunden","rating":2,"review_date":"2025-05-05","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 (e299bf38720a…), 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.