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 app sometimes crashes and the phone screen just goes completely white.”
Google Play · 4/5 · 2026-04-15

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): 1ade0cd33d91ba0ab75376b3a1134ad574eb4ac5dc801685d2f1a204c6a14d9f
Signature (Ed25519, base64): lQ0kbQfUy/nc1shNtyCvnhSDDNPvipfKG9sFxuB90Z9PPQ4gHvc//uSLI1XWlMG999NiB56bKgx1Er9lnumTBA==
Merkle root: e299bf38720a5a91bdf63bbc0205245bccdf3432ab1652c69342549658b7a9ef
Merkle path: ["1addfcd51c4c3e40081d2dd25f2e42d618ba8b665b2183beae2cb64522b38c29","278cf23bb8bcf1fd7ccf43ddfc800a8487f05a0dae358d336ef5f7b88b62229d","216dd7acc83feca8c1352c8dae4f79d2c6a87fd334e09e6a6ced3f3ce7fa6b64","a45523f6482f99d8b7cd58e279e54605f19f58f8cbd36c239d9620e9ee25fae5","e41c0e2abdc6ee91fa47c1d875826fd550ebb035fb55f1247f2cea0b265fa22b","21dff107efc80295cd1714e934ab2986de3775b37d1193dd03b3421ba640f140","6dfa3c2ef67eabdc60e6f392d903e7895de96ef26aea218b883ddcfcfd9162aa","41a83831676709925fbd0438b3a6c544a828fffdc263d3503a94f8e6625fe25b","fed4fc83d00c72d2f51d192a942793cd55b39978c317ba0725fb46dd5332b455","5e19ab54ca8adac336c09bc9e25cb1f486e85d1bedc29c4c4d278fd509c1b824","07be6c3c8a9e01f9b22a73457cdae6cb1c800fed0aa42a077db2612d9d0e21be","31f91261e54510c82e0f505e928dcd01951b5f1b3bd1a4ebc39a5ed954368324","e3c57a8cebd6c96ff44fe2cffa20a59e203e20975780cfe446c93ca7bbe448ac","2e838893ef313b8ef0f87568e1e691fc197dfcee84413640a12968493decac73","bce5d442c07de6307e5ea8947098e74ce88c2246eda5e5fc1015a6d7519228a8"]
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/durability/en","quote":"The app sometimes crashes and the phone screen just goes completely white.","rating":4,"review_date":"2026-04-15","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 (e299bf38720a…), 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.