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 wish there was a one-time payment option”

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 3247957099

Proof data

Record hash (SHA-256)

473261eda7463c71cad2222d166c62e1e50b4b437e0483502e3e8abb4aa84759

Signature (Ed25519, base64)

pCBCNdTRkvR4PqVLz+uRSuCC+1NZoBfWB1ptS0bHbUiwMpEOhu5g7N+KWsCIqOGtYLaJVKpFwDmQWETvhfoICg==

Merkle root

417e79c5636392fe3ad064f685f70971e5d532c1ab257f052022be5e8b8c0dd5

Merkle path

["4730c478d170e0cedcf6ec0fa54212d5699917fe702804854391f0eeb5264486","cac57e556ba56f39dca5f05f73977be36c3aacdbda39969774129b22bd507e00","8374e62983cad3ca6ccf7e233311a59572835e95c3be11a102a33b2a715d6414","b7240a05af06fc98362de22cdfdad131bb5ffb517168346caf22abe508949c02","a11a1d91a45a35085ea75fe354a5be08189688b5cec4ca7e03b5bcf1c40bef83","7a29731dbae2f647d7e4dfe77b630e679a9f2ef8efc305d9f0b4b3c5d8fdefed","cbb1a5d2e6a302c55054eed44091857c9f92a18896415104e600472dc23ae35b","a5e19649ff6e9bee391912459df84647804da956b7bde1f30cb0331bb2edc90c","f413d195d4b10cb36a97122f879e7d8fb040472334a17c07ccf25fc719ccfe75","dc70906be22146dc22abdbf70f0dfea9a846a7a3e7998a4995c25a335de41464","71d3914470ca71dd4f06df16d7c9bcad63ef10a4075b2b39691e2e6dbea95dcb","be60c6901c0139765faf2ac0c808c7a5cbd967c6838be8c04050584a567b2d16","a3445df7b332a2879d9dfcbad4af79652a13ea138d6afeb81448d347f1f2d128","57e0ae13344994ee6a0ba58ca5aa3276e7427d3c63abccf6f53bc322580decdf"]

Anchored

2026-10-14

Public log entry

search.sigstore.dev, log index 3247957099 · entry 108e9186e8c5677aa2a1…

Expected log hash

86fba1d35010991e0e45c044558780825516b744aa3dd43e559455260fbef42d 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":"v1791946591199","kind":"published-quote","locale":"en","page":"brand:vaia","quote":"I wish there was a one-time payment option","rating":4,"review_date":"2026-10-06","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 (417e79c56363…), 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.