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 want my money back”

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 2907673729

Proof data

Record hash (SHA-256)

afb566113ba9856074a292cd70714d74590d7e8a5d44a6063e608377cd67463a

Signature (Ed25519, base64)

lVcmdbUbBCeoUl7VhCkgBM+crSbzj4rNBBfZ54wUohskzLfxfJ7n3y2OGJFk+F8h3phfNj09UhQwbaPOiS0lDQ==

Merkle root

b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02

Merkle path

["afb386982ad27712bc7b091dbf70b50bbb1e592b4c53ed2c288f913072b2d055","e963903a7dc99c7818811e9702332c454eb4b8fd94a44d00aed1cc2670552734","c51177791fcf9f42e4b8f68e0d66781980842dd790948b3144e82ac96150d121","de883b8f1f4b747f9d13f405f3da823b2c2f6cb8ec473dfb962de90d748f0c77","db1de35ffc1ec946230a9563e6fab956349c3cbd1145e10997c1e5097da2ad49","b823f8116471a00fec72165ba6bb0b318a37266290c13f2f462d260382e97582","7b0b5d1c738fbe2aada5e89ec4a6dbd125eb013f177922b0334474d40a793b67","e6680e39b39fdd9bf076d6f19681d47af40209f5f582305f7e624adee242e157","d4e070a6559e534e71d724abbb1e23de8e67db818b63b3c157910b603467e63d","3182f41bb5e5b18a298a470d0dac5eb76e44e08277606d7a71dbfe71f47f05b0","302781f826e4e27dfeeb952369e37835d487d944454c4a4129ac11187f525b5a","d0e82af4a03d7591b930166e680788d40e9d0f467d2d9124361d17c683e6610b","e73087a4c89fcbfd62483a37ad723e600377233e603592ed8ad92c5db69f30f2","05978e8b9ad5fd39833c65b8b951e8c80cf426334c441fa8a8bff8eb8eeaf534","4543e8b9ac7bd077d9526acfdae449f0a0d5517cbb42414f50ef930ecdb9470b"]

Anchored

2026-09-22

Public log entry

search.sigstore.dev, log index 2907673729 · entry 108e9186e8c5677a06ea…

Expected log hash

bf9a74000249ba6e66b1e29aae9d8cb95c3400dc118569a80e5c0949f3e8ac62 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":"v1789969984102","kind":"published-quote","locale":"en","page":"theme:vaia/returns/en","quote":"I want my money back","rating":5,"review_date":"2026-04-21","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 (b9a08f9d6d76…), 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.