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.

“es dauert sehr lange, bis eine Antwort kommt”

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)

fe3c5f1901bda9e6a9c4cfe9f6ea969f5bb72265b327ce2f4b03142497e4a20e

Signature (Ed25519, base64)

gRX8sgofU2OXjuwCEslOZZ1wANdQJs9s9EXc41e1yayttXvaWY5LVXdkHq31rMSN5kqt0hHErtFHxUiM1LFdBQ==

Merkle root

b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02

Merkle path

["fe3d4b7454d08e1c274e2c4fa626a2e71afff3cfe2d6326bc4c275efff13015d","eddc4c2a14183f6a8b2e917a053e79941a446a43e750cb9c725928683c5e6a90","225531b246b5d54d04175238a3ccc2038b31bdb07c0ae2475de076a2c9e119ca","e6032a7e5d60c95accdaad2d1f0b163501ef7c55bcf4375f92a0ce2512c98693","b281aa6f617b427031508a8a5f66894849a1497f90bb25e972368150d1e9e6ca","41fcd05690d6c35dbde943f7387b9ecd5663203b953f121ca8f3c649cec14d96","1c65926b33d7d732cfe26c06f115de6793fbca24954daa8e099413af3a36d9e5","1b501669b70335bf6f509344f8bca065e2bd74b8fc00f2584474312c0d14259d","a6dac33f29759f88532e9ccce20d18e366d68fdfe0b6a549b83653811674e4a2","db1d020a238c630184cdab8f3f46763235f4f66c0018d4563d4626cf624ecd66","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":"es dauert sehr lange, bis eine Antwort kommt","rating":1,"review_date":"2026-01-19","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.