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.

“Please try to fix this before the new school year.”
Google Play · 3/5 · 2025-09-01

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): ce3e2312f1c78b2cd4747c60f72f958a9aa78b75e987d3c3027d900bea79fab9
Signature (Ed25519, base64): M0H1XFXMOvzsYLf+Cjc+W7IY+pZ41x4x9BIu9nmwwJYY1rizhzQYxKoOlnXw3BP9juyjG8QRn+Gz4XFtdU5MAQ==
Merkle root: b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02
Merkle path: ["ce3d594aea435b845a2a5952571cb0c1b65728b916ee9743c64351679626446c","2c6f34051499391f2f7e6ab3aa97adf4d3e7cc47647c22c6b9ef2a685e36d37e","01dfd34a3def30724b73bcfece6e38abfcf98dff14d047cc8f4cb5773d379d67","ec7c38898f9434fc5c3da0eb5275a429a0f5032178a7e2d4e5b74541f00a03e7","fc9ddf7cc081e2ae391fd03c872f733b2eaae8f67b93b00f6cb65c740ca7a830","2e6978d260c24781ec22e0ac80bca7027a073d5baa462021d3a608ac4ecbbf28","893de6b4ca1550170551013712909655fb18ba083a7793509cd44ae35ed5be85","f26cf48ce45ac0539f4a3880169b962d53be84e50ec7043804359d9e0be28fbc","f2dea97a24938ca7c91099606fbd5d65dd59dfacd551bc333b5a4d47c530df1f","a42a21c77f0f0d8f54adcb950626a5c44276eef1210ab57b5a18ec668122bdf2","8401b8939dcfb94a48793e7552a885657c9d52892d88c0004505559f51cd6d5a","1324e7f8581b1cc3455b81e88efce3958a5b23eb7205ddfacaf930e32b10bd47","ff0ce3b59f4b6fff6b806e01d20d764fb2b7a5651693c19ab4bf8a8b5ce5f968","05978e8b9ad5fd39833c65b8b951e8c80cf426334c441fa8a8bff8eb8eeaf534","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":"en","page":"theme:vaia/delivery/en","quote":"Please try to fix this before the new school year.","rating":3,"review_date":"2025-09-01","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.studysmarter","v":1}

Verify in the public log

Open the Rekor entry (pre-filled with this proof's log index).
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.
Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
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.