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.

“After answering the 10 questions, you are prompted to pay to continue.”
Google Play · 1/5 · 2026-08-12

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): 420bbdad9d3879cc08ce3c4528894b61ac2fcc3f51a3d9e6f93f7249499d1bc5
Signature (Ed25519, base64): hkR8Atgc3tbTNdHQ5uslOI5WiAdcOQ0HzQtTqpitA4lMfUdtMlvL9YNfRHRhDZZVHWUxs0k//n/vAGGBN4meAQ==
Merkle root: b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02
Merkle path: ["420c3f3442495f46f61a218bda7afa256c83c90ecfb7001b60c82cf83b6946af","4e03ba8afb21024b3c4c5ff29fc12fe21ce37b0b9f114f594ea2ab91d188c75e","24d90ed92683ea410f2fd58dbc36d1999b9b6aaf9f5cc41119eeb1f1f3167851","0e4fd5a41da87655f0c270ae054e2f00d47d1652eb78d2b87760432bef49d309","c12d1d670f1282f9364e8a19dad761748f5941641992cc2dc1e1642af417ae0d","e45a9cd6be0968917984b3d80e8ea7cee75fb6fce4053387656766fa1007f296","47915c5a3ae17b03f7db4ce4d5437ab6bb42a01f58a5d616e7a15c7114a7c467","94943dbdeffaaae5bca5d847f854f6d7ad9a4e75edcf3be1dabc1fcc2de8e144","d2140808f58f5eccc720e1f71af27498e602b7e6d523dff938a14b8b77d3773a","5287395aef2f8a25e88c8a3c50924147993f490f4003ef422cd6d48fa486ac95","e872ff0eb276cc0ea0ac8b3848489a979ea5a1ac479562bc60b28df50a3b89cb","94e922a61249c96280c1295d8745a971a94793a7c2dd589ff7c2b71a4d71c1e6","17354708d69221dcc11d442a2ae8d1a8fd9ce3422f52e63a29a599e2bc987d3a","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":"en","page":"theme:vaia/price/en","quote":"After answering the 10 questions, you are prompted to pay to continue.","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

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.