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.

“remind us always that we have a task to complete”

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 2904877428

Proof data

Record hash (SHA-256)

e5d4e2b3a05ff3bfe64b066e9377c3d346cbb625b7c76c885d3a42214da88ce4

Signature (Ed25519, base64)

OABBesJnWjwhIivLql1QK573T0LpL9BOiWQtPT/u/v0R4HaRzxPNpKrhWKgxrR9UlShSufaVLfhfXNIIoNW2Cw==

Merkle root

e299bf38720a5a91bdf63bbc0205245bccdf3432ab1652c69342549658b7a9ef

Merkle path

["e5d41ad97ad30241159c047c7cb4ad46a739a660b7eecfb321c435cb6258bdda","1cbefc0c33ac700bef5bdbd52f0ffc1077e883cac16db2d8bfd5572525bbd638","1944067ea66a0ddada47560d62541d388c16da5151cd5a583dbd6af438f05831","29c8ecc1f0a29b00dc396697ab155788e3c662aa3e63c318d7c904b58e08a0e1","b08f01d48f2fbae3792b6441b88d5cb203678fea77f1e380434fbc673e96a79c","7b4d4cfa1cc46963bc8c47cfc17c2a9317f9f1e8165e8dc3613cc29eb7dba126","330ee9e4341f14d4ee5bcb7919274ab28fdefbaa11f5a3beadd0b8d6d93d9269","f53e1d5ce750433b974ec86b2317a7a64f4c96ca10c2fc69cba80fa423e574aa","1a7be9534eee99e33e42143fc7c7be074cd83b31e4f7332f0bcaf6ede899a84f","312a271d0a96a819a67a6e9c1692af1c90f1f1c07453150490779ef12aae4297","61847aed1e15fe38603f3749ed4f967e83902fabcda16f828dbfb3db9a44d565","d28ed21d4373cfe7811429a5d4926ac987665261fca2846c93ddc2c90e391266","f95e3a68f572f5650a4093453e2bf28168547fa91a01ce08e539b3d7016a3f80","53a8a23597d45564e495678bf6125e41ef42f347693c924494330dab53ea1e2d","2a462314156907e42d6f0d96eed96123f1d79516aef73ed189d9f5466556b638"]

Anchored

2026-09-21

Public log entry

search.sigstore.dev, log index 2904877428 · entry 108e9186e8c5677ab408…

Expected log hash

d020708737f55ccdf49203f373fcbcefe8158cc388605556fbfda3c365de7360 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":"v1789881486272","kind":"published-quote","locale":"en","page":"theme:vaia/communication/en","quote":"remind us always that we have a task to complete","rating":5,"review_date":"2025-07-24","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 (e299bf38720a…), 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.