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.

“Nothing about being able to cancel monthly.”

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 2904877428

Proof data

Record hash (SHA-256)

cea572363ded90635ae3ce76edbee61524cbbcbdf9e6f9eecef1e41290604e08

Signature (Ed25519, base64)

hl071aWsLr5q33GsH8tYGfJ+CS7aqOsQLikpAdxJzCbWpaCZ5s07d/alHHBItUJoyyQWj8UxnJZAwaIgd6PhDg==

Merkle root

e299bf38720a5a91bdf63bbc0205245bccdf3432ab1652c69342549658b7a9ef

Merkle path

["cea88a201a1058dba059b9e9b7df02b010876ad4765134f756f740e0e78da9bb","b7c1d4e467912b53143fa6347ca7b3de23e98971559125069773d1a2b55bef7b","92df6f48bcf953095280caea43abb3137775f2874677dc583806acb188d85987","27e350a6bb04a4b88836f76937e330c386f4c4db6fcaab6670cfea584584dade","21fe8fb1b5d016f85b919863db1911441a01574c28ad176d7752eb30ade3d687","f49789c87518fd1a4e81801ed9dfec533babb9c8c7b8960c3b4a2334fe7ebc25","85732aca63efb33d0e89061a6af64c9b05be934dd82cbdded876e534a87f3dc6","2c7537a770af9998d6ce30657e5c5e78b4c72c7bbb840cfad9875113096f48ee","ad742d3b371cb3b5d6267a670df6b9414ae8842c95abaec1548ed6fc78821c36","610534309bbd1bfa5793fabc1254f8e9ff0f3706e20effd4937239e7376cad5d","f88be881ea062cb0d1c908f07c2bc25877d657079958d9ee97dfeb71a5747da7","bf08a7b70abd12d7b26586897b736d1c0404f066aa427e277708a875f0cb6bcb","06f94171d32c86f72a9e1d984f2a7c3fa7bd9f00a98eabaa3fbd7d57db71aaf2","e3714293de39ce3c6e3cb9d5ea7711343b19d2be532c75504682d8ef52e8f91e","2a462314156907e42d6f0d96eed96123f1d79516aef73ed189d9f5466556b638"]

Anchored

2026-09-21

Public log entry

search.sigstore.dev, log index 2904877428 · entry 108e9186e8c5677ab408…

Expected log hash

d020708737f55ccdf49203f373fcbcefe8158cc388605556fbfda3c365de7360 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":"v1789881486272","kind":"published-quote","locale":"en","page":"theme:vaia/returns/en","quote":"Nothing about being able to cancel monthly.","rating":1,"review_date":"2026-04-30","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 (e299bf38720a…), 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.