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.

“I was switched to the premium plan even though I never requested it.”
Google Play · 1/5 · 2026-07-15

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 3220367991

Proof data

Record hash (SHA-256): 2ef6c7c3c76382a3cd62aee1a7a848ae70a9bb3487aef6a4e3f3d19e02698d04
Signature (Ed25519, base64): rBt5/kh0Ub75n8FXc9tgbikst+fivMwawVd2PRYKN2U+RwT6VOZpfyxFEt5oGENszFFO5cRc61imqOh6zXv1Dw==
Merkle root: 8e481f891fa4a8f9e77c0279ca152fab4383b65a50decc840d9fd7569bdfbaa3
Merkle path: ["2ef148e83ce0c95308df175d55273ffd2d1d006724b3c1c8314fd82d02701b4d","01e1eea9f915d1edc6f8a193d8412d12a4ff91fda39e4c92d8300db378354425","592cea29fd190fba6788fac80d8377bdb73bb1cc9c709abf423213288e5c2f51","e4dde7de52b3d8a947eaad7b73b9f4b8a29518a05db52c13bf6cf86b752372c4","6354d8ad35d2fc0880b730f34808451e3133a4842c8a10122c7199bda67f7d92","51741e3f56a49adfd3c047af83d6f0e2af8d8d2ec9ee4a8126a7b1db017cc4be","3f9cfb9e6dd473ea66b75a34ec4f22b4c94740e4099984b621328adb89a43e68","fa11fb7068be6ac7a1ecbd49e389820b1f9769b2f8b93f2a61e3a3efe3db8c2f","05332a25f4eb056a4158d21d82dfa11035dbb6da2aedd88a982e34c251b1a536","93a5bf30da5c3d7728a4ac8e2eb8aee052ce4c540659d9397dd679935c4e5eae","df585a3f11b338f1ce34579b95fa100361dc550eac6e7364ca145aaa87cd18b8","a7aabdc256e01976bf56aedd2750701f155d95355e126564b57f87590d7c57d7","f12c6d940ab3feb9a920f8708be9c7f52b5aa4637463f6ea0927f2330e210f4f","391099ea13ca712ab4d3c0ebed9ae37f021122ce33d031a4f3442fcba2038ec0"]
Anchored: 2026-10-12
Public log entry: search.sigstore.dev, log index 3220367991 · entry 108e9186e8c5677a60ce…
Expected log hash: 9a2b3ddad9c3b29dc171a15554fc81f3d4710c01a7565bd2f28b92e7b639f6dd 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":"v1791776812348","kind":"published-quote","locale":"en","page":"brand:vaia","quote":"I was switched to the premium plan even though I never requested it.","rating":1,"review_date":"2026-07-15","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 (8e481f891fa4…), 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.