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 alles im eigenen Tempo verstehen.”

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)

30b1722bcde2ebbf42744db695c226cc2bd045aeef090a3bf98b9485d8140f2b

Signature (Ed25519, base64)

B8ANaxGIQUwspJ9TDFCbYxPD+KtostEiMUlja1MBk0bd/FtJxthP8q+wwtDym5P6AaobhPGeL56lzKXgNUADAw==

Merkle root

e299bf38720a5a91bdf63bbc0205245bccdf3432ab1652c69342549658b7a9ef

Merkle path

["30aecc38c21974f4cfdee2694b7c2e4dfe3e3bfa48fe439b7e77dad57c403965","6ef5d162a39a716e68d7d0ef05ffa0c1f1a580429cd1ff9c93ae0baabdf8c343","6e70e1463e9f6fd4e5f4eb008ed7d2c5b9566181a23bc8cf31a1f95385ab905a","e7a98a050032a0114775764652b60216048f7c4e1656b45c352eac5d09306f9c","1c5960dee3bbe674e43732bf11fb20cfeed3e80fad13757303edd417852edfce","0ba6eb78bb93edae192ce67b32bd68e5824813cb3f34f9cece55dc7e4358233d","968d667d8767b2546a5ba5a44ca032ca4fd3531843bbf1e5d97e3dff6e6c38ff","f814410318da6bc7b44980f2d4f5fdc2a5fdb32e0cf5fcd205cd51e16d04e62f","187d51a80a48145885d7da5100cd9a5ec8a689c9d514270568543fe6a055a451","c6c4fc2af6ba1eefe809afd91778f4d6e85ff37fa661537f3b877227c5bd0a39","22f7f790928f056a4acdc3634db989dc19836ddd154c7a9b49ec17a860d185f6","357edf8b8b42fe4c3b552e7406b8bc0a14039d1d547cc663e39b36a74f79f52b","b296372665f7c3838922f5e4d88b25d49437a77f990ac53d0dda027dc9495fe8","2e838893ef313b8ef0f87568e1e691fc197dfcee84413640a12968493decac73","bce5d442c07de6307e5ea8947098e74ce88c2246eda5e5fc1015a6d7519228a8"]

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/service/de","quote":"Man kann alles im eigenen Tempo verstehen.","rating":5,"review_date":"2026-07-25","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.