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.

“Von etwa 7 bis 19 Uhr ist die Funktionalität sehr eingeschränkt.”

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 2579644936

Proof data

Record hash (SHA-256)

0a4c811d48a025c888dfc43c8da081859780e217d06538f11232629063951d58

Signature (Ed25519, base64)

koLLUjjMKMpf6yeQKH07w/WSE0IEMn9NlSNxoesBX8dFlvt2z93IxmscdsioXfanjw+F/MVGOEk36FxPsqC6BQ==

Merkle root

c768716b2cb21aabc39de506951f775443418285e2c5eda072e3b3c2d945945c

Merkle path

["0a5357db95b25aff132eeba70b4bd4854064b3fcdec323284c6ca4810d81adcd","9185011f18c963cf4f66fc266d0eeabee49d9e3f0a1005b7eb724f7c27ed93b7","789d10bb2f7f4f2ebb1e2d5b150aaa4aef101e883c0c98f56e69adfe506b7be1","71679eb508b14bbc424ab3035d5a38cf99f1e5d063173c465c8dddd2cf94df80","c2a1dbcb107e9d601eb73a698ad29dc4a0007bee44c724e2558cc2f85a803b8d","6ea345b894bafcb3119bd4111be75598030ae40783c3c7900abae23fcddf94aa","49a540dcc7c6c3d4f8cef5dfa310074efd8a980c560d21251f297192651cedd2","6b9fd8a74f9003aefe4044daaeedd99abc4fd3fa25c5bf80b4d6f547f025509f","713b811c959b9f3de58e51d075da2a323c0163c00175510c527db1fd3f4db5de","8db959110300a253de9bde5b5641adced32d1b6da358010e24eb814f3b094875","21dceb876cbe59a71a9bdd1b75264994db32860fb2d37844c2f478d1c57d32f1","2040ad8bb83c34fc495eeb8c9f81caf04fd90dd5129397bcf00a3351408f61cc","38e74f19a86a1311a4dbfb6ff75312ce32e1ae47f608a45fe54b6162c0fae8f4","58ccafd37278be2b9508db439c14e85a319c2716b397eaff7c959a5020ac606e","4c61c84fffc3f3248d19b221d821cc3f0e04d1cfb4151bcd103cb5959dfdd5ed"]

Anchored

2026-08-24

Public log entry

search.sigstore.dev, log index 2579644936 · entry 108e9186e8c5677aee79…

Expected log hash

3a9c8e6bb3b2990f2171448c5468a63b9d6f8bed98ee1b72cd7d6f73b4663243 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":"v1787545182186","kind":"published-quote","locale":"de","page":"brand:proton","quote":"Von etwa 7 bis 19 Uhr ist die Funktionalität sehr eingeschränkt.","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

1. Open the Rekor entry (pre-filled with this proof's log index).
2. In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (c768716b2cb2…), which ties this proof's root to the log entry.
3. Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
4. The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
5. 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.