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.

“So far, it's been a 10/10!”
Google Play · 5/5 · 2026-09-18

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): e416d244491d41314a7ea80641a6099364edfa12ab97aae08ceaef3f182a7e1f
Signature (Ed25519, base64): +TLCqAnRqM4lW7R+gKz/Kf3golvJUnrT+0Oipvb4nSjKNB+r3Z2GvPu6ovt9UMgRGA7M+BPJ5xclH9maOvpqCw==
Merkle root: e299bf38720a5a91bdf63bbc0205245bccdf3432ab1652c69342549658b7a9ef
Merkle path: ["e4161b8c881e9050ec00836875d84b9825e604edb2df8ab583f7d3e4b86f08bd","020456cc84d7475c7ae0bba43e131c259129940b1601d4358d701624d8e06c23","42f2077c40d8f5caff1e425f8e9d3765c9391aa886aec649c64732f2f8471c56","15c080baa3020382c6c524282b3bbd35c0266e10bab5b6ecbce8b39a8ad6415d","7a7072af93aff55e0e4d2321f9e4638ae0bba126fbc57ce37961ecfebecb532a","587070fcf10be568157c0254fc242f19e6eca324f360deae7b3fe5aaadfb8ef5","0a6aa262ac802aebfee7d0e5dd15647c8bc286feda3aab7676f50bb5c6dcbe34","067789482239bcf5cb3b6ba6e102397bde1b6f4f9bb8d3c78c72310b726ba8fc","56cd36dff9b453c138dea9f8d1f927ea31a5132e8ef1f076632a45c1ef48e891","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":"brand:vaia","quote":"So far, it's been a 10/10!","rating":5,"review_date":"2026-09-18","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.