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.

“mein Anliegen wurde zügig entgegen genommen!”

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 2907673729

Proof data

Record hash (SHA-256)

f1f6cfd4487f34d26265e7e72ee3f53d971ad3b88955222aad36c4bdfd16fc99

Signature (Ed25519, base64)

7IgimbuoBODCf3qIEvrFnqvLq2CikBcZ2KbRXiuX1e17G0+yFI3GCNhwpUEAYg+WCxt2BVbwhsMix9aQrhV9Dw==

Merkle root

b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02

Merkle path

["f1f6768e9b60dce0db36c40bed1c3ccacc04dd7225b6ab1aceaa45ef4044f82a","3104488d9ef18311a8ab29acf1f0dc5778d418ba250f12977fb27e011d027e34","b9a253c2e01e8717848f6992a7e4477213e59806342d4166ef8c2bcd9d23342d","9c1f84e6c48db8db73b7d5dfdeac17fa66c74badaf7ae6ba3e1d06353d5267a3","14d60e08f42f90e27de87f7e4ef5eaedaba7d87e7334df0f798cb740af443142","19a47d16bbda63f7ade98b0730f5c720ee15fbdbd497e63cad5975a4f99a6ea8","4e98dfaba499ff48bde44a0b5d803cf311edbc17281bffe55c58e7dde414d1ae","e18e9744fd0b4529c60993f3a3d7bd589a003db929d0eb3d05b5bd868a3902b5","f3b18e602df6fdc88edf582ea02dea5f20406e3e3fc2e8a60e1918a8c7784312","2ea6bffa9673f3a81bbc868569f3e6ff306870034622c6e56499753f4c5dd170","1ce8185a67fc0f0f175627564ef800e7835dfec27d00240c56e1eaf3b636cfe9","e89b125d6d75a826a464fa50668f6e82a6668dbc929bfd3fce7c23cc14adfdbc","c975f4076f62a76765a4bc502e988829db65110a1650004b828d2dfb5f90a9da","f92a7fda99af63eb008476cac47b147880eec6868f847624f8b438c917195408","4543e8b9ac7bd077d9526acfdae449f0a0d5517cbb42414f50ef930ecdb9470b"]

Anchored

2026-09-22

Public log entry

search.sigstore.dev, log index 2907673729 · entry 108e9186e8c5677a06ea…

Expected log hash

bf9a74000249ba6e66b1e29aae9d8cb95c3400dc118569a80e5c0949f3e8ac62 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":"v1789969984102","kind":"published-quote","locale":"de","page":"theme:vaia/service/de","quote":"mein Anliegen wurde zügig entgegen genommen!","rating":5,"review_date":"2026-06-08","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 (b9a08f9d6d76…), 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.