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.

“For me, it's the perfect solution for learning, refreshing, and 'preserving' vocabulary.”
Google Play · 5/5 · 2026-09-14

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 3272785693

Proof data

Record hash (SHA-256): 2e015fa3b647303716c07c28e9f220b85ab3159a03a912830d379088a9914bd9
Signature (Ed25519, base64): 7CLYUiX0iRAUcqc9/qI9CvKtBBdLXfPF+ThJFHpUWBjArwwws69/uYiknk8xx7IXDa/DLlgM/pxSwrZ9N0wOAw==
Merkle root: 42ee8ba4b974d737f78b7f168d0af8ea0510697ac4ab4c6db44b5522bd195660
Merkle path: ["2df659cad660bbd6d1a93340492d225ed757550e5214c80cea41a590972f0994","dd6400e2af186e4c7887fbe93b693e3b40fecb0ba16bfa504081cb514d49ce2d","8f23bb038224842bbb29d4c559012892b302332038725bd113a6ab392dbd9fac","4eb161867661cd9eac4e07961c6f7a1eae9a4c54c9c7e79b5cc0947bda6e28b6","54c3be93702dc5be3ffbca21ba89c7610ef16d3e136b676f8308e9c21aacc446","049194a53691b2e35b4876f2e887a7eaab2a33d8f64e380fba13f6107a769f73","e24aa13db3a63aba2e72f4d9e6794b03598f5aa9f026f8771da5382231658e0a","88ddbcfd2c9ac77f09d2c9b9c3b5f5e3646b8043bdf2bfe846088d4f5d52db07","0845466f175928224488936c554b3e9e8078b10e2f0266c5d2c3aaec4ebb7854","c15bec133dcd4ef10b7c616d24091dc865f2275b937dff526b6f7efb8dae4af2","a2b46a1a793b32df1d1c7215f98613a95eb5843e284cc2bb9a43f7d9bef3a545","5f15fc19c161cf1b078cec1dbb446ebe0ad796b02ab5da46a3b86356dc6581b7","49dd732b74591111793e90f822c8febb6b4e9dba2f427a61f4d9f7035d4c82e9","c77ac7da32c6d4db47aeb73e606322601c1bed1566533de53bf56d1599928d0e"]
Anchored: 2026-10-16
Public log entry: search.sigstore.dev, log index 3272785693 · entry 108e9186e8c5677ad5db…
Expected log hash: 3b93391ec0595ab5c0ff73f2540eb1322f56c3c1302e6789c57b97c74423deaf 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":"v1792118508353","kind":"published-quote","locale":"en","page":"brand:vaia","quote":"For me, it's the perfect solution for learning, refreshing, and 'preserving' vocabulary.","rating":5,"review_date":"2026-09-14","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.studysmarter","v":1}

Verify in the public log

Open the Rekor entry (pre-filled with this proof's log index).
In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (42ee8ba4b974…), which ties this proof's root to the log entry.
Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
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.