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.

“Das Widget könnte eine deutliche Verbesserung vertragen.”
Google Play · 3/5 · 2026-07-27

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 2670833107

Proof data

Record hash (SHA-256): 07d4b73984d2b34bf08f0ad6bef5a28a8457013fd00dadfc1e981527b8a0cc68
Signature (Ed25519, base64): xFgXPHbCba4KYeVWrtq7YlIGtM3HRu1sB6uJkaO9DISFphN5bGqYi3oa9+K7cEiQYMXWKp5nTvVYq9od/G5LDw==
Merkle root: 37bab7ab6bae92a907497e5a4ac9fef6a8cc674cc365cd962e5b33be029217d4
Merkle path: ["07d40c526a934431d130b76e62ea1c83819e74332222da43c83bb59da27ce5f8","7e739c24ee1f9281f6b181bcb19036b124e296c38a8ad933aedca9b01d50485e","c6121896f171280a7cd27e8b1013dc09c14da454c2a5278a3fc13acafa4f83a9","9b6018f7713da338009cd7a4a981279419f9ef6ad3e18f258e3f1822612b700a","dc9dfd1fb1f5a9f04b70ba0b47572822e73a7f7a71a1dc27285909c8951dee12","27da9527b77953e48c0e321010093f87a09a42c0a3fc9a93bc95dd9a3af93b86","ce42e60f0a92df4a747f7574cacd8e5ca77621fc70de427c7dfa7dd70e21376e","8d6cf7ca47d4f339378d5be3c13de75dc73f419826fe34d5de164c5d803f13f8","acb2188899d36cff898d8a62de0e2fd62309f1a91064508acedd9c2d7cbb93bc","4cb8e8c16f7afb500f6bcb4b215c1712e4f4cc9fdfb57b469143595632c9f51a","a6c31f8706905d02f5e2bbe136b8966e1df98326c3b6108407ad860b65257d39","c9b120504e13ebf6addbc5122cbf40e7c38191056b31c8b51d2732241f152229","ec831a88cfac83431928609cb4878ed5619e6065160f677d7645e0479a63a3aa","1c8a8edcf77caa5fc3af0401d1e3fed2c8693428493c7127f3e51eef4f9cecba","61a69baf0202b9bc9628f4c2534169a082ad6e9020746ee3a84c82ac414b68ee"]
Anchored: 2026-09-01
Public log entry: search.sigstore.dev, log index 2670833107 · entry 108e9186e8c5677a11f0…
Expected log hash: 93b6693570baaa3e2327aa4b03aa01159ba10923124d4cddbdc139f813f3f422 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":"v1788230822517","kind":"published-quote","locale":"de","page":"product:proton/proton-calendar/de","quote":"Das Widget könnte eine deutliche Verbesserung vertragen.","rating":3,"review_date":"2026-07-27","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=me.proton.android.calendar","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 (37bab7ab6bae…), 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.