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.

“Not only that, after adding the restrictions, you simply cannot continue studying.”

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)

86207ae9acabd1f41d08f9565f552b9bd5b75238f6fc05d3518422b7a4355f3b

Signature (Ed25519, base64)

vB1tQLy8loCX5TO7pOEQh/QmZiuu1BMJBlyr0k7xWGWgkLkB7mUBsL57M9PPryt3mhVlu0tMlZSP8vPICYhABg==

Merkle root

b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02

Merkle path

["861c1d85ac7f9fc5977bcc96a91f88046be8212321f3467fa0ca0c0cf6925157","73f70c3990bb225cd9343a7f0c1b1c13a62c174b5b1c519babde1187cd8f7aa8","4e8faf9d7acf0c839854c9aac07c8292da8631c2c8e94dfb51325fc2b4c972f1","81485b60741f671a553ca075839385c2eda65a634df8034bc3b39c6560a1be34","d7bd5a35ffa3bab57b34c14286cf88860e3bf99fe2cd674e3b0741bc87edc817","77a321d44e7bdaf018be2e81e5e800d9edd783586706eb8eccf77048c7d581a6","f1d820485ea61d0db1aa92d6e5ee377dbe59dd768afa9bd9ad922a3a98c82a8b","922ab5593717e8196583b656dfc79d7e9cedbbfc373c95d6decc3a5db43b2623","7985c5136f7da1486e54eeffaa029024f4b18c5f8208037b3debb56b45931657","66c4ff1af10ac2b2e59d66ab919507c0e96270c6866d38265ede99ef983b9819","b12c24ca7cc480dac10d3c9e7ddd80a781d96f3b29af3e073b54d3ea0a23098b","d89f5af62fa7d0c6d0a9fe42e9680d2e7af53ca738a716457a3405d68b60cdb4","8b252735b283ab7584d9f6925f08ed38c911c64db001463eafabe5061cb6f9fe","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":"Not only that, after adding the restrictions, you simply cannot continue studying.","rating":1,"review_date":"2026-08-12","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.