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 machine is spinning, and the display says 'foam reduction'.”
Google Play · 2/5 · 2026-03-16

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 2948162176

Proof data

Record hash (SHA-256): 53628ae6c5027df66aeca6a99f3e991cc5eb4c3327560dbb046901eff966d1c1
Signature (Ed25519, base64): 6KzcIRqEIY22eK0ETvg4alO7OjDgQ9EoUj1gJUKGJMihUX7k5aeLzgvaluO54anRlT9DnVcZcx5oMFv/fUcDAw==
Merkle root: 5397210619679ac63434abd334c13f5aaccbd1dd184ad9d8cac5ebeceaa346bd
Merkle path: ["535fd172cc02d9e7526f16e291c317e806450658e71514c2eb3adf6e363c94e5","5c30a62b10f20070fdf4f134ce51936f8e48ef7af611c9157e80f523c1202b2f","ea1d4db7261f9262ad93b3c6843895b65a030213a1b54668ccb4232c62daff0f","2c56d9f8370dd75cd7dc854e4720d75fdb626ce563158995b4f89ed42a22ad2a","a635525cbf5f9d2c2a767fff0df6ca9e0a9fd8ebf44bf9f6e31dbc654f5fb37a","3d071b355d82d01ea890a7fd932a88981a75b0607e988cebcda1334bde10d083","edf76433012a40064ae55ca2eb9b88a492c2359b28a744fe85a081bb9406c73b","1f60aad333e93781d86c221dbd15568633fa6e4a7640391cd787bc3501eee8d0","08655c5d400c17d09f410a7b1167e10a05e1d7959d0390eaaecc57236660605c","142cbd03f27685c7113d0f7a3844976f4fb5711e3d197eafeca33ac381ee8a4d","c67a728bc683df56876c06bcbabe111bfb03543832dcf92ce235a5cf9aeb843e","761d3c69791efc32a160ff138bddbddc7bae13863915424c916d5f32aac8cb96","63caf53777d803af92ac6db2d445588376da791f63be3d8e14916e9cc99957cd","f5d1cbec3469173c409764ba850b613628c88020363ace8f472e6f611d605e0c","eb97a4ce74ce5f5fa16f1703481b35cd770316cd3d34167e9b76f4403804f896"]
Anchored: 2026-09-25
Public log entry: search.sigstore.dev, log index 2948162176 · entry 108e9186e8c5677a61d4…
Expected log hash: 5ff8f25b7934b5d72d363d6805344624efba4d637f2c851f11783b259b9d81be 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":"v1790226990092","kind":"published-quote","locale":"en","page":"theme:schulthess/quality/en","quote":"The machine is spinning, and the display says 'foam reduction'.","rating":2,"review_date":"2026-03-16","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.schulthess.mobile.android","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 (539721061967…), 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.