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.

“Es sendet ständig Benachrichtigungen”

Checks (re-run on this request)

• ✓ Signature — Ed25519 signature over the record hash, verified against the public key at /.well-known/citatio-signing.json
• ✓ Merkle inclusion — Leaf recomputed through the sibling path to the anchored root
• ✓ Public transparency log — Sigstore Rekor log index 2904877428

Proof data

Record hash (SHA-256)

f972302c125b6e511f3f087bead988b0f661c41d6d1707109fa8ac460a484e4a

Signature (Ed25519, base64)

6SKX7AGp4arAVYCAa6uEokdpfqdXX0BvODX0htCHpw+Xk9qqcK1FDvPgcBSTJTb7LhEsbCqK2A+4duJkqoQ/AA==

Merkle root

e299bf38720a5a91bdf63bbc0205245bccdf3432ab1652c69342549658b7a9ef

Merkle path

["f9714c37b801023456b84db33a66bbc0e21f79baaf7ce21b1d4918570fb3a9a2","d6910085c25ba06ba83353501e6142f5c7b84b267ab5d5dd7569d96198534d50","308f74479b207556a93f007d6c28ff0ed5dd6c09a8e60de3f18bdad829e5307a","c285edfa59e58ad8528e144037febc94a19bb4ca4403c5fb3a5e3616e3e200f1","75e602f0855be29a954bb0c411fc95b45d840e83c26ebda5edb0342bae07db46","7773f85634180b0ce0ae2a1203970ebba67b38c7629877c55f5e01cfd42d3565","79d87aeaae9c0de687afd8204aa7e82069cc41bf68bcba8f72a164131d543bbf","98536527e19d5bba296c1d560726d17bc2969c867b3d188d90d597dd4d744f8b","801f0519dc58367d6c56a35285904944ee3097971420345fdbfff12766a8fa55","810c2b483236c5da900ac0ee9beef62cec7dbd9d526189df63678c5b7243b882","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":"Es sendet ständig Benachrichtigungen","rating":5,"review_date":"2025-07-24","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.