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 will explain and help me memorize as well as understand it”
Google Play · 5/5 · 2026-08-20

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 3258490685

Proof data

Record hash (SHA-256): 0fcde94c3bfd67504c0b7a8d796c5a3ff9e4762d7bda10d4a2451a0ea830790f
Signature (Ed25519, base64): NJ09DlvRPMS/ToeFs0tbLVe3tHDhxmUJhigF3hAbYkE7LxpvozRmBySi8PDh+h4ShaQGudnRrn4QJ92xmwYbAg==
Merkle root: 2824dde473714ae3dd30e88823a625346b1b80d9a55db059d813071b78952b5e
Merkle path: ["0fcb888aeb295f574a5a153d33b6e60022d89a3b3029009f193d610060413b34","ab8be8bedabb377dfe53596439a40d5d7dfb95636d214be4593a99bcd58ed8ac","f510d71bf86d453ce6387499493144bc25ff1a6b88cd0fdd7e79f3a3f4a758cb","9d8ba9b75834ee78d8f06e724965a48cf792fc44e6a1915d0bebe074831b5d32","642196bb36c26b4c6ede027bb1036c630753f0374c67b652c7fcd76ed82fbbf2","8286d3fb2d88694ed2673f0176af5dbfbd7cc2f00f0b78f9304cf920c79913e3","f6927f5a8739b192a655f9b674b7589f3e17872f2d8404c86d8b952c5d434341","e781c5576c6db79644cbd62ddfa30b36a796c96b40eb1967ad636069603918ee","165cf5a3620cbe519a976f4038dd65516c1cfd8e37ce173ab0df3648c8dbbf0c","ee376a3d1da4a9b5642fb7e77081dcc4d6f3b44113f5453222402925831abb74","40b10dcb6f645b499cf8ff88c4ed9ba8cd688f69e32f2cf16d4bf7619f215aeb","d6bbb08f9fb75532ce4c76d4d84bb93a214afb09f8a4465fc6b0ac552770a707","592828a30de1f38ebd3532fd0b7bb1288bdbe2c152bea05374fc6e7c174f1dc0","c0fc8298b38da3131f46ba94c60b50a7d3f5bfa16abd1c4c451dec4dd9f28f96"]
Anchored: 2026-10-15
Public log entry: search.sigstore.dev, log index 3258490685 · entry 108e9186e8c5677a9f14…
Expected log hash: adabd3d63ce5c0d8fcac6f6311f5b010ca6003db409229d5e92687bb33c3624f 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":"v1792032587528","kind":"published-quote","locale":"en","page":"brand:vaia","quote":"it will explain and help me memorize as well as understand it","rating":5,"review_date":"2026-08-20","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 (2824dde47371…), 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.