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 have to do it from other devices”

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 3221102617

Proof data

Record hash (SHA-256)

5218f33b415565837a8d9040a18df0c04d737a9380c669985f6c9e3cdbf94bef

Signature (Ed25519, base64)

SALhEUk5Bq13ZRCabpoXuqG4dfHIhkTsw9NOJJUCR7nBplZF2YaFjpTCiySy4dwMrGNYl24EpHw/ShFn3YQCBA==

Merkle root

0eabe705d05480191badde562bf975cad5c107b96758d59c47efce7f02d55f90

Merkle path

["521766d87c81b0afbba71fac4aa4a1ab2df1993634deb06568aaa0052cf7b9f4","f3a9f8a5f0bf013cb558c67c85942cee4a31113f565657a42b141b089903cbad","14e378c383adfcf80e7bb8b77c1920a605bcf2d0e1f14d2f1eed49ef566670c3","7bcdae0dd13c8b10c9ffda351ea704fb234a879f9866f75d90024de1a1909155","d8b60a5210100bf99038b2dcaf184cafa8f18f61c6992e09b2e466321e51486b","17f3d3636ad63299d70894e31e4868baf47a5912e7ee3230a9fe1b53e694b0d6","98099e447c3825d8f6a2714465730ce1ce2921e241b4eca75eeb695b4662b963","474d13ddcb3a30ebc9ce4b948ea464ab1c0e4113d02be2a1ef184c65d5041e94","d80725adab9d19a8a0a405628df20de722cefc57fd37b4f075da8ee635ee183c","0ccb4cf89110b9a6b2cceacebdc849c989bb629f86e2baee051c0f94321e20d2","37cebafbdaece907ce52b110f354e5fd5cd4584044908befe829d2d91f05f191","6856126502c2bdf383de7d34a707edad30552e4f450e80b531090a991b3c5439","05681ee1c24ddb2c2974b8f09b67bdf0f585a1101ecc93c336a755ba8369addf","2e4cbc8181996227b6c5ce6cb00a4128780f0a2cf8618660b840716e64b4286b"]

Anchored

2026-10-12

Public log entry

search.sigstore.dev, log index 3221102617 · entry 108e9186e8c5677a7ec1…

Expected log hash

701a9a476cb781c93a6209c8572d258b6cbf70f6f15d478bab1da1537af9506b 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":"v1791779915538","kind":"published-quote","locale":"en","page":"brand:vaia","quote":"I have to do it from other devices","rating":1,"review_date":"2026-07-30","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 (0eabe705d054…), 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.