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 emailed technical support to request a refund and still haven't received a response.”

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)

f557e6d3137f7aa164fb65b2154bf3a514b5f0cf41452e8ec700df7c6431cedb

Signature (Ed25519, base64)

ceJ/cx+eUOuDypLAShtSb9MNPCjthzwlofNNyacTba+GbJHtRd54pJnRg4/N7Wrh13D/76ojVTGcU2m/Gt6MCA==

Merkle root

e299bf38720a5a91bdf63bbc0205245bccdf3432ab1652c69342549658b7a9ef

Merkle path

["f557699d7984287b2ed76eb08032c063f2edf4c6b450a8bcb7cbdb1ac2a985ba","c4fa0fe905cf9d943a197c18979017da58b7dab605c15e97eef2fd3fd8e41031","3f757263f312d43cd290382c5dc81d1bdecbdc556600bb34e497a896dae6fc02","a0167641daa89a6bc1352e5fe9bc954911d6b312bba8728734e14a2def8a75b2","3c4605ef4e2cdd83f8ae4ca0952a06fa4d5dae0046d246db989c5252e30893fc","0d59a50d3f43bb0191e53e6e2d055f47f953dc8d30a2a16d5cbd1ec4ae435bdb","aacefbe10ccbd060658fcdb87cf98b84d48683a4d238e7fc85873f749bee21c4","44450208a485234208e0a6f7331cd77a6abdc432b8c3b1527396b4afc0ac1373","f887f5679935604f9dd74fdb4f9087842c6a4234be0d906b741eb0ba8c990c41","a52e1c5235962042ecdf6bbef0d4db003a996786fa4b692948dfb4ac38e552ed","a3cd6a309f10748c6992d7d249a79b7e2e2669fa48a49dd673039acab527d8fa","b382aebc31acbad71afb3ae06e4e6f9b354e9da57050f36d03bb1ef97dab503a","f95e3a68f572f5650a4093453e2bf28168547fa91a01ce08e539b3d7016a3f80","53a8a23597d45564e495678bf6125e41ef42f347693c924494330dab53ea1e2d","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/service/en","quote":"I emailed technical support to request a refund and still haven't received a response.","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

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.