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.

“Man kann nur 2 Lernsets erstellen”

Checks (re-run on this request)

Proof data

Record hash (SHA-256)
dd5463a4cd83469fda37003ef3189d668e0fda4f690dbaaf89f7bbf65c7b6241
Signature (Ed25519, base64)
xu101CGaWccKzt7T8Dqk98Mgn0Ve8EYvb9z9laX3ITkqvdR6CNyxzHDPdT62PtowB+RuOG2PF/QvSdYpiGBXBg==
Merkle root
e299bf38720a5a91bdf63bbc0205245bccdf3432ab1652c69342549658b7a9ef
Merkle path
["dd575006c8ca71bc353a317257f8e0fadb2927ca0dde4a928a8c421f4f76fe6d","a12aa72466347b52347683739a35284fcaf19f14ebed54bf001e48e6c34a6f56","100aa7a375f50611caa9908c07125c0bf53bc63c3cc03dffc2f6af62f81100bd","81fa3c5e03b517ee150cf7300d15cbd0ebed31e192a901ae192d1c1558c1580c","052f8090105a0cc7b0a4433d8d6c708a4fa36d456fe780a8a2f6c434c67975cd","01e8672ad816b891bbe9f23ba316881da99ce4ccd76cdaebc0f08f5689b80737","2995fe9d0e51c5cea3482be3b108fdd9d82da511adb3fa30a6bfc4e81b80efe9","1f0deeba46a626c18ad1ef70707b998c81cc6fbeaf09e30821003c7a8ee18a86","8b8a91fcf39a99dd64a6fd8a058d9fcf6c26fee0668fcc424b09a74990aa0037","ed88d4e3a89ecaa852e7b20a1ee7f3a296bd3e57081ecddc2cd840a518ab70a2","85c3fbe89997c93f50bc23fa818bbf4bd3e224f003552f75980ca4b7480f0346","d28ed21d4373cfe7811429a5d4926ac987665261fca2846c93ddc2c90e391266","f95e3a68f572f5650a4093453e2bf28168547fa91a01ce08e539b3d7016a3f80","53a8a23597d45564e495678bf6125e41ef42f347693c924494330dab53ea1e2d","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/quality/de","quote":"Man kann nur 2 Lernsets erstellen","rating":1,"review_date":"2026-09-05","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.