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.

“Impossible to find customer support in the app or browser.”
Google Play · 1/5 · 2026-08-04

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 2515243153

Proof data

Record hash (SHA-256): 118651a6cd244769b47eddb7fd72d34ecc1a3476045fbc252ac6d089a6c616c7
Signature (Ed25519, base64): pqxmv7fxM/f+E0eIzIOJZNGCWBImOiCMe04+pNhpa9Ira9GOrBt5mFCRPNtabykQn2Gq8/zV0cZBa1mMUiHmDA==
Merkle root: 30b81ce96f52ff8c37a1dce6a2cf1045c2f51663c1ddbd5ca071d040e32c05d6
Merkle path: ["1188684968b1d36368e3294f7fbd41066c71e0c27b6b9b372914e272c5909406","609817764a27e76b27d16ffa41a92d4b36c3506dda6f9352b93772027fb7a217","21de35e8c0524ef8f1573f2f81af7560a2ec75f1bf0c28b73b685a10588a57e8","9e559803012ae891c87bcfd259dfe89409f5615b0f327ac4fa76fa365872e331","1550e6e5bb2f027b19e69cd7b131ae06ea7f6673a062ee1599704e6e56044684","91557e5f0abe2c461f88a48043b0a3aa9a4a8fd86e96d04ace3937e9e9a391b8","27b95a202c588877b279ddac3ee7fba6a8b44c35f182687a8f0a18048ab90b5f","f638ab401aa913941f9b77ba538551067576fbc878dbb15c845f7467e7ecc471","0219a58e26102c869b11d8e1d10edd6e8e589f0d900831a8ce02986ac1b2a744","81d848351e04ec9693df452695c43ac7f8781ac1715a3b24c5da53337ecc7747","33e624e56a8e981203122a1e10d68f6dff92266673c731646b1617906773aeba","a2256427495313e98c459069132e7417853c94b24e75c257deff8b35fc6b26f1","bd7ac11e6e3167391f14df63bc65a4bf46202d1841b8198af1861fe0409c39d8","d2f0bde8db363c9acc10fb20e031bdddc43b684fa5984306f2efdec113caa9a4","dd9b0a9d584b044c4116e1c10c4b8cf4a06383a771a07c9f3d39f998f23cf36d"]
Anchored: 2026-08-19
Public log entry: search.sigstore.dev, log index 2515243153 · entry 108e9186e8c5677a8eb5…
Expected log hash: 314ca716b1ad71ca29fff6da960e81a719fe30fa5fc14d8646acca79a7c09353 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":"v1787138594002","kind":"published-quote","locale":"de","page":"subtheme:proton/service/support-reaktionszeit/de","quote":"Impossible to find customer support in the app or browser.","rating":1,"review_date":"2026-08-04","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 (30b81ce96f52…), 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.