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.

“get 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)

d75548c72c4069f116f42637972efb3fb6d56a2b41fd9cf3f72f9d79b905bb9a

Signature (Ed25519, base64)

t2zwza7wk/0SRFmLm94+FQ9WyQ+nQXUcvAshjznlZf58fKJwPsmqBfEN+gbY6LCxm4sOP/FICxvMp+O/dA+jAg==

Merkle root

b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02

Merkle path

["d75e3fc209d67707b77d34d7bf492917012a98284127df9e6a90bf0194198c29","68c7e4dcf411671f1e907507e76869f18eaf09aa06edf8d2d970663f786ce567","68732b6d6194c742b32b3924b49e50a9b2988eb11435dc910c45a75e4b13d1b7","c5e4585a9e504fe855b32841988ee143abe0d2805f9aa65429a4040e31f00b83","c879d745be79112a95981aad18a0cf015d42322b38a936285fa348ba9d34b67a","a04d24e4cf67bb106473b29062a1825fa61f5ba98531aa81f88389554c1bf3a2","1c6fb05dc919a6a3d358c8a6554e0e418f11825ab7a7f4519887efe56c5569cc","7e1acc8df15104066f294647226ae36a747daf06e3cc6608d97028cb1e7281f0","e5ff6e344d4638ab8036e0d981436a700c5bde6938891e5d86821644ed0ae12a","1ef2d32327dec49b078f60d82e96fe63ff04f9e28e1f6ac4531459cb8e763e04","5fa4d2509ac4b266680172a1d644b9603830e2992eb99b956b8d4389a86690d7","1324e7f8581b1cc3455b81e88efce3958a5b23eb7205ddfacaf930e32b10bd47","ff0ce3b59f4b6fff6b806e01d20d764fb2b7a5651693c19ab4bf8a8b5ce5f968","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":"get money back","rating":1,"review_date":"2026-08-31","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.