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.

“Ich habe einige bugs bemerkt oder Funktionen die bugs zu sein scheinen”

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)

d9d2ce5bf6d1adfbd511463830865a2662017722634fdfe2968faae5d93d20a5

Signature (Ed25519, base64)

Wh20cGTX8f2273Z7ci+714FCfSl5uWSyH4H1S6w+sutwjhDpegLTrib5vZuD5zFjikPY7FpEtw7l+a0n19inBA==

Merkle root

b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02

Merkle path

["d9d30327306d432eaee464963972b29439bf4eb247e6a111de7b3c13a4235dfa","b4e9d569e7dad43cc76453dd94bc4917da2d58d554279c3486ea1cbe747b8312","917c284578e2aacca11a14030425fd10f264927f981950fdaad7cc27d4a7d583","ca7a04412c7b60bf6c015a07a670178d9f0e87c2fd62510ab3c8e8c9e1963dad","3659d72f0c22ddb1baa41b0de45df665df52e894abdf7151ad00362ed75f9dba","3d5915cd2784acd93d8fd3177ffa25b87d5d75c420e424dd3f26fd739711fa3b","c8ae704e917b8b32c6e2c6d73079dfa86a63e7d387754d9182ca9a72125ab41d","3b5cc6cb2e2044677eb361b7230be4e4eab5028eb4336d5c8672f5f37ac080cf","f7384021a197e13f40259eb4c775c70f45ebff0b746b2dd83fdca9544f4fbfd9","2bb5ff656c7973cdbf520df3c851c90c28841be839fb931187a0faf4b7c86f3b","d724de4db852592012d7e350c865d36fd56f7f3bf918292f4d807bd4b562df22","2d0841904d905b327cb803816e73e56fa86447bd28a90f792c27c874ed9a6b9c","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/communication/de","quote":"Ich habe einige bugs bemerkt oder Funktionen die bugs zu sein scheinen","rating":2,"review_date":"2025-08-03","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.