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 habs gerade bis zum Namen geschafft und konnte den dann nicht eingeben.”

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)

e4e58b17cc6b0ab24df62bbcb5950649ff9d90e18eb6da8f38e818095f85a96f

Signature (Ed25519, base64)

6xMMy4lkGXEELFXKdCqx1C0pITGN66+XZFlUOS4QNCq1aXSf3rnKS65M5CaZaa2SSwVz8Dp7RftTZh2esPqnCQ==

Merkle root

b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02

Merkle path

["e4e26f51933cc5fdfb940e755c7caff475c012dd43cab2ccac2f9da1f550df58","f4f03b35762e1b93bec20d8830395e99cf6bdc59d25e828a75b6bab764fe1d4a","5e724f5bae00716f4d876574e7771fa875cadbd55b56253e95437dcaadeb46bd","58e94ca91c4d83fdd9873654aa45ef0aa4e4646dcdcfadf119eaabf14eaa7b4d","83435f0269134cb622720c5eb1b61c64c511d351364e1ae2d06e039b349d898b","9f08a68d2ac97da624b39cb8989548c9b3055cbdb97c3a5f6d5bcd532a6183cf","d07b9548c420999b5de3d2892adce2c7374c6a975ba224bbac1b2c79b8a8faf6","7ff6c32b029c07152b66d53846d76d0c000b61213e5fc9218c27370de3ca749b","d373daf32ad662973d5f725a3806dec950667d43f3fd7ee71e87943d20c4ff87","bc8d09f0ad2cebfb648e7c5fa31cc3fac6a7d447cf4af4e2417b30b049b62ef0","bb894289bb71d3b696c9afbe454a75a78b206d9839b23e1a62e36de1c4316674","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/ordering/de","quote":"Ich habs gerade bis zum Namen geschafft und konnte den dann nicht eingeben.","rating":1,"review_date":"2026-06-16","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.