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.

“als pleite Student kann und werde ich das natürlich nicht tun”

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)

1a7c18d8f0851dd8468c1176659dacd90f6973a02492f7dde9e57ace46d1a121

Signature (Ed25519, base64)

MdDiAuEFw+neDPsMxpqB+Vi7PuUKS/Fm8pPmo2W/t2ED/EJedQ+7CMeDL+JhgcWNpwzEQEY9v5/4e8r7qaVaBQ==

Merkle root

b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02

Merkle path

["1a7c7e2fa0d326e0352fc6d962a06aa412c4c82ae72f778ccbaf766a2439bb01","06cd1b37d4c5364a034f9be8d9822410884630544b5854051d189bdffd10cc0a","c9db443333d02412009eca3f98b811764b362bf90c39dd073aa595e7aa8f7185","adcc4dc7c2d71a3faca6f92a569d4ef081aa402ebfeb353107ec843c99571a18","f0873077caa9dcd73420c2203c171fdcf3b8902d658df050a602d87baedc0a08","c290044b30ba58af3da99d4e76d3d2c6f40b2468e74d8fbbb7562c018b683056","03f0ac15a0b5ba115332bbb027366a8cb88bb24027ddd97c553e41ade6c6eb42","97444f93120b0b025078c2605f46f7ffa55f9af07d5ef8cc84a914b7db832378","8661497e0f8437ca38e847a7921d3cf5ebe506b84bca9de2c6475b812f1c581e","eee4f919cba6cab69570c887e554cf640a13d0cdf16d09822ae330ea59b79997","3dc35c856c0a17766a288b07a85209091ec3e282d680dfa0816dfc1ef234323a","8efd095958c52622b2aa6772a44f939fff2d831b42cabe9233cd8ccd2f4a438d","38643099e759f6b9db1dc190b469982c0e70d71dc8caac721f2a46ded3b658ea","7a4792c9dcf9466d19ba61ec3efd4f578e21f2d3035e8fa6a6264d3045083f7e","43a562d6822dab12c673c1efa0a3171d1ef69b949f676fb01847e1e5b56274de"]

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/price/de","quote":"als pleite Student kann und werde ich das natürlich nicht tun","rating":1,"review_date":"2026-08-12","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.