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.

“Die beste Karteikarten-App!”

Checks (re-run on this request)

Proof data

Record hash (SHA-256)
f888df06c206a3e65ce31ec4ad39ff21e06535e34211aca7d44c21fed4428652
Signature (Ed25519, base64)
COFH0J54zblS1VCbvY7eUFzHN0K4xTqvbRojMX3UF+SaQ4Jb69AMPYc1sMRa+qE8sOn4K0x3qN+nXUR9s1k6Dw==
Merkle root
e299bf38720a5a91bdf63bbc0205245bccdf3432ab1652c69342549658b7a9ef
Merkle path
["f8859ad058768e64292583aceec57e8e125a0b62c6234514b15d83472c56dff1","74723cff1b395ba6a970e0db7575e9c2dc54456ddd573874e901382ff40b651b","9a8541a636482b94f71db4102bdf8609b7b7381bf2cb4d3406cf7efa8c349cc8","82b699d28daf3bdc18f45af956ea784b5ae19d6f1b1ef5a5dc2987eb46165623","d554d5b8c042e0c80c488261cd1be23b5d533c2be4abc030699fb067a0e36b9e","53980190046429dfe88abd2d0b31078ff98fa7c6c40aaeefc0c33bcfd2500e0b","d83dcf570e96c564adb3f426f87991088d7499f0f8c6a5b0f1e5fc44df70f242","9f7a4220a0bd44849e4a6f02cb44692b13a598c23c2bda170f352ce0bf0f2268","c32667d1bfc066d649b21b9975c56f5721e4d0e8582ea3528b368b0736dab21c","a52e1c5235962042ecdf6bbef0d4db003a996786fa4b692948dfb4ac38e552ed","a3cd6a309f10748c6992d7d249a79b7e2e2669fa48a49dd673039acab527d8fa","b382aebc31acbad71afb3ae06e4e6f9b354e9da57050f36d03bb1ef97dab503a","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/communication/de","quote":"Die beste Karteikarten-App!","rating":5,"review_date":"2025-03-28","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.