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.

“When I want to type text, a white screen appears”

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 3247835674

Proof data

Record hash (SHA-256)

46a102298ffdf58898af733a6d31ef53c7d5378c9fd15b0e889359ac71b2348e

Signature (Ed25519, base64)

ten0baSKQQ5Urmk+tshBbrus7w1UA+IGuFNOgZaQWCqazNh/0kwhpYwpJrvib//XusULSqc4MleOEqxWuPXnCA==

Merkle root

8af5f2f3f65c47a75dcdddbf363e3e76b22d37f4e953d150fcfa3e84bb04dba5

Merkle path

["46a002522fe5abb2b1d57a9a4c2d6a2400a324ade88f1c9cb9a039182b07ad46","034f4510e09566d827eac8869ac63c5d7bb960466530e44d8369db45ac83ffcf","ac34775812a04cefe0d2974c7d42c90f3b0a43af81b285e1b6f5cffe318515fb","d68b1f2b60928ccc93a663f139ae030ff233e71d886e2cae8c0f480be5bc54b6","2ed38e53bb3eadc51590cc026ab55e3c34c94b184f8c374cf49889fc0b781906","754fac3b8a97cc23f6a8a516d3a42832325352aac7849cf35e7c760ce9da9eb7","ecc5ef8eb18f0c13e67b1e0ec8db58e9cdbdaf872842241cdadc6eb9e6aee949","0a1e4c07f07c83f31fd60b113e2ab1ed2ad54fb25c7f63518f38fc628b1e1890","db66127e347964006e89e4beeb33e072277cbb82bb7783e8bd6f045ea0b320a8","02412fc39f69986c74737f518ad1b7a5b8d148919e5340644bf71b623102f541","609946017b4f09ecdf84cd674c9a52f9beb90e0435e4351d30b38e74a6a2933e","655d3cb3e6f23a95a7bcfab67fbd3f535bbc0ce71a1ebce283b6fa005ab8af3e","2df4d836b73633f71fa96faafac3d9d32f00951d180b99885afa9511763f7b1f","2212eb5ff51e97198ac2cd6542275dfcf712b9be9a8fab294a9bf844689bcee1"]

Anchored

2026-10-14

Public log entry

search.sigstore.dev, log index 3247835674 · entry 108e9186e8c5677afded…

Expected log hash

306cff230c51a4aeee6711c8f2603eb2af6985e8dc9f5dc959efafe3398b8caf 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":"v1791944613264","kind":"published-quote","locale":"en","page":"brand:vaia","quote":"When I want to type text, a white screen appears","rating":1,"review_date":"2026-07-25","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 (8af5f2f3f65c…), 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.