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.

“Have recommended to all my friends and share study sets with them.”
Google Play · 4/5 · 2026-04-08

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 2907673729

Proof data

Record hash (SHA-256): 1d845f8a07ddb035c5dc73a21f88c436393e442e07a8b4aceaa9933fbc6fdb21
Signature (Ed25519, base64): 62ZGO0WvT9kuU204UiaSts2xVMhjpl+0NxgDLFGB2rzybwoBmRpXI+7Zb/CbqaVB6rGkouG0LNT/BKQG8AKbDg==
Merkle root: b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02
Merkle path: ["1d844b70f555b53e03793c61b5bb0c56110ec7d53740b8c851c567fa9e5eceb4","238d20512ee1dc4ffa4f9895732ffdec7da9a685f2f1333847744b5afc4aa38e","b6c6c0d5a33fef906fce53d1941e1f8d8083dfa2758bc7959331395d03298037","406a5ad248a2bc494c66cf81d214b546dc1f3f8452acf6fc619cc1c3d5c8acc8","0fba55bc57479905343eda907f5cf6eda1fab9ba0e0ad9113937c1e05ea83a30","b5cdbf828d33cf9aa7df499fb76fb80f7ce898cdf32a4e6ed74b02a60d6aa87f","569ab7c6fa60348c9099eeae41b11319bcb0ba45d9bb90ebb593e119d4e9a29b","1fef295d17908209a1e1cce4622a0bf32b72f7ea5549e23f99b9fa26d8cdb433","ee573f8ce5b1bd191d2feb2cd38cc21de7a4f6da86003fb3b04fef9beb10cfb1","98e5cf3c4aa8a5a347857a94fa7a8447ea85d0acecf5210a1132444b0844e1c1","ed1cb7c53928940a0105dfe61369c96e3f6af69d4c48078eab565caf9573af98","8efd095958c52622b2aa6772a44f939fff2d831b42cabe9233cd8ccd2f4a438d","38643099e759f6b9db1dc190b469982c0e70d71dc8caac721f2a46ded3b658ea","7a4792c9dcf9466d19ba61ec3efd4f578e21f2d3035e8fa6a6264d3045083f7e","43a562d6822dab12c673c1efa0a3171d1ef69b949f676fb01847e1e5b56274de"]
Anchored: 2026-09-22
Public log entry: search.sigstore.dev, log index 2907673729 · entry 108e9186e8c5677a06ea…
Expected log hash: bf9a74000249ba6e66b1e29aae9d8cb95c3400dc118569a80e5c0949f3e8ac62 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":"v1789969984102","kind":"published-quote","locale":"en","page":"theme:vaia/fit/en","quote":"Have recommended to all my friends and share study sets with them.","rating":4,"review_date":"2026-04-08","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 (b9a08f9d6d76…), 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.