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.

“Die Proton Unlimited-Abonnement ist eine große Sache”
Apple App Store · 5/5 · 2026-06-28

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 3666350239

Proof data

Record hash (SHA-256): 0894daa2831d5b6db6980b06cc733e1e714b084acdae4de663f5a65ad601abe5
Signature (Ed25519, base64): 9WOpfY64uCSoUi4fYWzBrZYNJRWxuJI+xVuqzS2dCBIF2zcxW0HdkkGN1KJtW1Fjb+Px7PBLv2qnOSjfVBm6Cw==
Merkle root: e302b878b844ddc4c01ebde52dd558acc39681368181eeb0600440538713f92b
Merkle path: ["088f20d7b19603490e16d45458a31fbc64a88e5e037b8a443c9782db0be1744e","090104f227606712b988acdb397c1f50e8e156286451a34f5bb7ed2b45b68e8d","b3f1a6a1ac0eb964ef382b081cff4cbd216bc16baf65c19e752e161af9d7983b","e7738ca8189fbff469db9c65f2a883018cf1d5efefe365aed8993c57f2ba50a2","28c7511fe7e9225f6e8b4fbe06401203f58c1db069fb6078579c99d83d6fa983","85f3830d04e28034ebe12e85f89faa9aecdb0acac36cbf35e25b0e9976e920fe","7ee12e46a8bbeafaa52dfe0e27d93273c741853a868b66ada44c378bc2fa1b94","1052a473920375a8843d9d405e5876c22be3b24b150696e1379804928ad84e4f","4fd1160ac0b71b1d632367326de6a884d256f185c383c60d1b61cb6a80848642","b7c1edd47448e27de9991317a50078adbef20c6dd56f8f10d1184d44cb60a215","cf8978cae81647972c0a15d01c13e345d075e060245afa4e2b7fca2a97c1f424","a16debef883d10ff0e3a9e02292a98bba98acd12938e6d61ee66f46ad60dc0b3","b37050522ba2f37d0ddfe2676968e2985c7f32e0abe1ec7ff7ba6f14a184838d"]
Anchored: 2026-11-03
Public log entry: search.sigstore.dev, log index 3666350239 · entry 108e9186e8c5677a9668…
Expected log hash: d75c7ab37dd891599f542e30de9c2c50e9ca3ac46ace45bb971b20e677a04734 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":"v1793701017712","kind":"published-quote","locale":"de","page":"brand:proton","quote":"Die Proton Unlimited-Abonnement ist eine große Sache","rating":5,"review_date":"2026-06-28","source":"Apple App Store","source_url":"https://apps.apple.com/ie/app/id1437005085?see-all=reviews","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 (e302b878b844…), 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.