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 3272274666

Proof data

Record hash (SHA-256)

311bb38985fb9fec9a5d8aa7c1d61596707f07f02347e40c68f43d4dced18c5b

Signature (Ed25519, base64)

WUNI6BDnJAvDD/pX1IEaiSSfmXS+BqJkF5wcpEX4lCYA4rrlq20pEBXlaQpH1pSMW1cudTnvdfqdHHuTnFn0Bg==

Merkle root

a4d47c2a34f6eeba31e2744fb1551fe9a0e34820dfc152f1ad93a68b24759c3a

Merkle path

["312efbae5a5999ed80b6785c09665de0bc8005b61de4ca6cdcb26df4626734d4","43fb5241c15fa0225a4953504bcc20385af3979b0d8e0f52c02b005998774e4a","7cefae4425bf9794598352252135581317b7f6ab1a55aa8bd5b234b5017058dc","0494a41ecc94357680284bcf98106c460e6e40348a5e3645ab607f0ae0cf44f4","6e0257865e21a8c9d39a45c1a6c8ce0644f91991ffaffd4bdc252e4fae31d886","2726acd06024351ca5caf30790aed7c3c16ba70466af69b950a38bd53f655185","ddda90e8d5b44333cac823146e7dab099e2d1b3abd20099f79766564edd7dca0","b5f89a33ac9331a8f054c2d2fe0f585e8d3b01bb420f3ff6350782a5e1e88296","465807756bde1c1f25c4bcff8c36ecef6cb36471f36995d4ea1c6776f0ad7bd9","19daa0f89ddefd045efce6d96b7b6254c685b45ae7412d0ac14dba4b0934a8a9","5d71dfb799af9616515551742ebf194eca9971ad386cee090b62aeff22bd1d8c","718239fed8057dcd9c8669511115793713c3c27b1e9657de27f870abdd5c7bee","0d7c4faad4992f205f2c1ebb2b0e4b1b7e9d070f1f77d3f8d64b80626c324f46","35108299fffbb5c1a0d86f074b5805457d73da5ec7c848a19bc9a928f6a42a99"]

Anchored

2026-10-16

Public log entry

search.sigstore.dev, log index 3272274666 · entry 108e9186e8c5677a2724…

Expected log hash

d56e71820b4c8c62b755e9f6e3d2b624566d12db6dd1606e99ef55749400c387 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":"v1792036997995","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 (a4d47c2a34f6…), 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.