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.

“from about 7am till 7pm, there is very limited functionality”
Google Play · 1/5 · 2026-08-12

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 2543700701

Proof data

Record hash (SHA-256): 11ffb337d30b7befa43bd1126639fcb39cd70501c22f728ccf72c976136b7242
Signature (Ed25519, base64): Bo3UjTIKmMH2YZ4MmWqcEV7+dMJiTjT2fVgwDe+vMj3mYylmVkHHSdGK2jfxfb17QYNNhEwVpa8roIruwJ0MDA==
Merkle root: c921242d78a65e026e3281000ec5ef04ef930758058c4fed3f79f3b5ef992cde
Merkle path: ["11fcd2f174db435067326559db1a4273c4ebab2a705544d3cbaf22b83c44aa2b","b7f92a5b68575427d2307306b7eec692d346e97be354b80f41da45888c892bc9","b98f4166a6f5e162007543c76298731d27156909039a13c9be4c124e1c072b72","823be864faa0ef57a10c9ddcec16834106c7783f9fde2d8407bc96475aaed4b6","064f676ed032efdf2ef699839e7c749af8d10ff040f63f016faca028793ea0a4","9ac791edfbefa070942d58dae9f7c905ee9dbfa97c61139190d36f052b1cfea5","454a83489146ee13bf92dbf7b1c498d9ffb8656d591354c512bfafb1ae5c64f5","66d9e8475cc25ac0a49db4e7d5a08f61d0459b16cdfb51ed819bec079e01bd08","8ec89e934375af0ec5b0eb70225fcf1d5b0ad409b054691be9634f8ec4ea2c81","9b27e5592f9ccfa7385e45546979377095f526b2eeab2ea9aa7e189d24ed900b","fb6d247b2059278f8574ef5f6e0ba5e3718cf1c06fee30aa05513565d6bd132c","a96676375db3724e1e627228b6d8bd9eedca089634a5496d61b7f5a04aa3f0ba","892281d0b1786415cbbab69d4ec27a4aa9ed68b52615fedb06b3a777f62ec60d","a3747175efd8cc3d769be29f15252da2dfd09eccbeeae76e08b0112f75ae1173","522d5a6bf348351e5632579ca190fcb390464957ba4b4698b399695ee13b67d6"]
Anchored: 2026-08-21
Public log entry: search.sigstore.dev, log index 2543700701 · entry 108e9186e8c5677ac7e1…
Expected log hash: c1abaf0323b08bce2cedebaf1993162920ee741ace8973292e7ffdd13aca356b 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":"v1787287374804","kind":"published-quote","locale":"en","page":"product:proton/proton-mail/en","quote":"from about 7am till 7pm, there is very limited functionality","rating":1,"review_date":"2026-08-12","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.protonmail.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 (c921242d78a6…), 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.