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 contacted support directly and requested a refund.”

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)

56431430ba74172b242d70a510030aae60c8fd5efbc3a3e843637d08732ca8ad

Signature (Ed25519, base64)

aY2+3ejiVzWoWV6wy3CdxgL8CV3HHrH5OX+X/5327Cd3i1I9GbJMIg39ivS01ZttntzLq3VJluMmhaPXsb8cBg==

Merkle root

e299bf38720a5a91bdf63bbc0205245bccdf3432ab1652c69342549658b7a9ef

Merkle path

["5643e8d6ca0b61d0eecb10ebaa1c46c1c2bad9217639e93540858dee0ce17118","1ba154734c3796a134e10c1ff0976a464d68ed1b55d5401b352e98ec41bf5fcd","38d262f39410490f670c7b8e0daf727b25c43c07403f73746d6a02acac307e6b","d9d4d69e0adc464bff90c60eb011606d453c24e0a64b1bdb8dffa4ca106d2e03","ea1112aa99133d004ce9a1f02b568a8c1c703da7cab96fe697db7312ac5f3e03","05a108e50175d9effb36831e70b099cb0d7054ea60c368fe41298143c037980e","964a17b8cf68ee3ef39324880fc7f84eb3cb76626f6a350256c79696ffd50fd3","7df05af7d9f6b44edce39888a6b0b93497fb2378fe9abec7462198cde444e009","970a1624d0630e5634fde4049f959d3cf8fdad17ad92597a3967845c3f3f5298","b4b786d47f3420c78e50305e74ab9cf02f887de3b78124da0fee5c57123368f5","b30b5bd263d48586ebd97cf3cd7e0d28b99e3f55621cd3d4efb024958f812b61","44c08976ee58b5cb058f11ca9229b8780c4a6cf8c64bbcf43373011c4a37225b","ac995c9ae640659c6b258d62d0cad1933912ca122fd33d27f90560dfd3199a84","aa4bbeb87247c2797626ab02a549451da6dfce4dcb854a36fdcc601e3e788772","bce5d442c07de6307e5ea8947098e74ce88c2246eda5e5fc1015a6d7519228a8"]

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":"I contacted support directly and requested a refund.","rating":1,"review_date":"2026-06-23","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.