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.

“It has been with me throughout my entire studies.”
Google Play · 5/5 · 2026-07-23

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): a60510f85ff5e2595c7bb1011a5286fd3232d99302e4d1a76b80a84631394626
Signature (Ed25519, base64): VxrZKTYfDv5QC6totPxvwRFF4KvuYJ6I9fqr3CIcQZDWO6yBZ4stO8tQ9kf3a/5lbEJM0zVyq7dWwP6GLttoAw==
Merkle root: b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02
Merkle path: ["a60449344574c92522b83b7944a0fc6916efc28375677eb91afaa956ce38a725","04a3dce74780993989575bec1875f50c8fab5efe15435f965b7d3a11e4bdcb32","e437aea76d40878a0697d029b86adb928cb807588bdfb32ee37861b2de1069c2","c68bd8228e519e55eca10379b0bdc9022439b0066a1c64e35fead61cd4377135","52edde4786d9f5eec3a6d12b57e20c0c27d42d5f0b248b3e41f84f2c79fe1dee","9e1e1835409093208b0b24600152423a1920b69c295014ea7c48b0adbd04d582","aaadcbe9dc7f9c9b3b4b6df84c1f3c0e48cba2bea3e3505cb150603b0e18a20b","e11d28ab0bd34ae0383896d519961d40253e6aa07baf9f503958913cad875fda","9cd22cafbc025763dd646c69dbbd2564defaf9af6cc4921b4b5124ed19b9870c","cb85a74a28cb6eef7aa703b20ab89baa7afa01d92706b87c83096840758feb39","990e247af8afe193ae111976d0854ae6dbc82cc0fb2e8be7f20fb2ddb4d3be26","d0e82af4a03d7591b930166e680788d40e9d0f467d2d9124361d17c683e6610b","e73087a4c89fcbfd62483a37ad723e600377233e603592ed8ad92c5db69f30f2","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/durability/en","quote":"It has been with me throughout my entire studies.","rating":5,"review_date":"2026-07-23","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.