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.

“Ohne Vorwarnung wurde mein Limit auf 500 MB reduziert.”

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 2948162176

Proof data

Record hash (SHA-256)

077fcc9c1545b070821b5de7ef3a9b8c9d67d679062250c1d35a67018418d71c

Signature (Ed25519, base64)

nF/16ckkHH1TnNkcMiO88vFl/PkF3MszLUmqRi2bBwsAtfxdgYOt7vNTh3EA62u0lZpA/vUPyiJ47a2Fy2YTAw==

Merkle root

5397210619679ac63434abd334c13f5aaccbd1dd184ad9d8cac5ebeceaa346bd

Merkle path

["0780cb6d88b46a06fc8a5ccbd098e53b3ea59c0477b0be9354972de6486d993d","b7d8ec49707a8cfc016302b32e62b859eec5000e51c85daac95f3ce97165ccd6","a0dec16fc05ca1c5e172eb4d3cafdaec3c27dab55ca77075ec740a6a3ca69310","18720872a31551a6e0d5875e2571607dcb8d10571f0e4732fff9127a6e4d1055","17dd42415cf19998c5172b6182e9a1a7081eda0fd58257122d3ead54d95cde84","e7e25e606af60b345d4f6fe905eff3b63a92b0ab2acc572a9d781f2d4fa93b13","8c95fe455a773a601c8385e5341316076ef682c7996a242f791436585b7864f0","8ac2e291cb7c7bf67d9d168bd0b7792e60cfb0b105d545d6dfd87336e1d31dea","7973401a5f6d3fec2b1cf53f26a34a6c89dd8dac1c73e70978a41e39cbc397ff","c18a7c0fc4a568253c8674dcc2139af916a1d1321e0f6df857b0efd84f051229","3c40bcf6f39dc755c30599a872b73e17a118ccff7cf0a8370e774637cc1af990","f16a91ba7d5eb8499cdb4b6b74f78187d85f6744d7e21d3a134538037c0f4c88","a46038d90afa57a10c269469667a209623fd066d3f084698343feb099fcfeaea","e892ec98bb605644ecd2848bdd788a136c626ca940d293df8f2f1ab99110b2e3","eb97a4ce74ce5f5fa16f1703481b35cd770316cd3d34167e9b76f4403804f896"]

Anchored

2026-09-25

Public log entry

search.sigstore.dev, log index 2948162176 · entry 108e9186e8c5677a61d4…

Expected log hash

5ff8f25b7934b5d72d363d6805344624efba4d637f2c851f11783b259b9d81be 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":"v1790226990092","kind":"published-quote","locale":"de","page":"theme:proton/billing/de","quote":"Ohne Vorwarnung wurde mein Limit auf 500 MB reduziert.","rating":2,"review_date":"2026-08-07","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 (539721061967…), 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.