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.

“The entered text does not appear in the bar at the end”

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)

6bdc9784f33e007e3b09944281f212fc97455a6d622a3ac82ae0942d61b966f1

Signature (Ed25519, base64)

AmFVOInRDaoDV7LNfIQnqOe2r05f0HN4flFP2dE8J9nsZenIw6hD9/SVjlXldSrxTFwcFqoJZLST1vv238gbAw==

Merkle root

b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02

Merkle path

["6bdaed0fcac9b8c5f7417be4b3eb98305fa4dc97a7e57807f5dd743d279a0cc1","34829001238abc1b7eb684fdfccc33c9e9ddeb2f7135b2cf7c4d7b01eadb0504","347b82104d29f3945b338fe26969b2c2f481af967b079bd2d6bf874743e69b9c","0fe6109a91bf4fc5935a6f92371784b95c4d0196c29d2188153305fdb053f712","e859ffca4f0ccdc4ebdcfb036e0ecdc27a3186c5b3b992a77a8885a8ed469350","5355f610bfc6ff4b40a36eba6cfdafb5025425957f8fc70d52a3e112de39d83c","393b0f900d21a3091d65d2988523fc7d0f046c01c9ebde52ee201800c8d8e482","3eae8707838249b629347472e67ccdfe88cca6f0972a98c65a165ceccdeec0a7","b313dad4ca4e90ab67963426ea2c5f36942a714a8a1ded8a3306e8e8e5964ec4","ce682cb5abf93d908c06a0a0357785c4f241ac5d7bd85c82abf3c9beea85b725","d34d9bdeaf35840444664f9988f9e353271b0e025606c586244ce40ed001b13f","40bd9581780e3da9ba474021971a27a2b963126bf33adecf2de39d29e5b5c2dc","bcc0d977b8ab2060a87584efe5d0f5545e840726716d3f02c248db108122259f","6c299608515c69a03540be35865f96ca4932f3e0403f8f39fb0e1c2e2aedffb4","43a562d6822dab12c673c1efa0a3171d1ef69b949f676fb01847e1e5b56274de"]

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/ordering/en","quote":"The entered text does not appear in the bar at the end","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 (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.