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.

“It's perfect to study effectively with it's Ai features”
Google Play · 5/5 · 2026-08-18

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): f4133e549c2fd93faf75d63a5d63cbbc63ec4af141e89643833679e7efddcfee
Signature (Ed25519, base64): pHxUv/YoA26V8Yr8hyVYREHTTRoMrOMPjRQoerZJBUgxoDZ6Pa7yiHfSwFfgyXFyTmb/JBQos+vRqAYcf9HGCg==
Merkle root: e299bf38720a5a91bdf63bbc0205245bccdf3432ab1652c69342549658b7a9ef
Merkle path: ["f412d16edb160273102dc4e55ae894c337a4c09d60f84d926fdabc3c3fd5149a","a7318d2d716a3210cf73bf08219c282f08c47fccd0b91cd3567c8980d328d31e","50ad77734281aa7b3561f43d84d37f860f31c37f30aa3ddc136ece0db49009d2","8192a001e51e516b893d6630a1ae264020102e30a44388a099efd3fc7439c542","60d91b8dc121b5f7aaae6dd10a72e79fd723aec57c28b27c5f0e6a4b373e4b7e","3231d42c7d4b7d37dad388c0a768e7d00e240e344a75fb31394a467901e0221d","10c71296a3f2a3b254bec2cf3c279b842bef67a2554c12bc35e948be2cd5f66e","81831ce7f23940ee9fdca9bc4a30f58a64d7184f4dae81dd80ea564480808ce9","25a9482748de98ced7bfd2a6a0881de5b6d3236775dc1b18e81ae5274cd20d96","715b178d1c714016557207318fc78c34ef829dc799125ac93653f7df74e3640d","b331093f92df4d03f0bcccdb4c283a2d98779d6c363a06d0cd9c35338c6b7f1d","b382aebc31acbad71afb3ae06e4e6f9b354e9da57050f36d03bb1ef97dab503a","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/fit/en","quote":"It's perfect to study effectively with it's Ai features","rating":5,"review_date":"2026-08-18","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.