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.

“Es funktioniert fast überall, wo nach Google Authenticator gefragt wird”

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 2671985937

Proof data

Record hash (SHA-256)

0953f93900e12a9ac03052019f242c5c01a2837690ee22befe37299d2d7e1b38

Signature (Ed25519, base64)

Gx+2QtDWXwz8biv4rZoh4/2W06ceu0JmdjcHm7Tn9JkxqzB+XZT2TXcNQoUIXt8y6+1gVDl+bbXmCXYTE+8JDQ==

Merkle root

fb09dbc79cd836b1d85124e5c45f889f4a8cee2bd2a4f93da34de8effbaeff27

Merkle path

["0955bb5bd3da0723b4f5fb5bc13d303863603afc83bb7949519bc0e297be6953","da7c6988798a52b848c57d5ae9964ba6e79c21c3847d7910e7d4c69f8f8731c0","1ddd61cb4f61ec7921b88c32d229b4dfdc5cdf7d412ebb40e13a245d989aeaca","a7511681c47b913be6e549e00c3c6ceea4d490add014863c31573e77fbee8b93","55b1a9acafd53c4cafbb5dcd1b2cea553a89289d18026a6771ad69d7be67efa6","d15ce81e5ab6c10d7bf683d0f3ca78ca32820428607e22db98b2ed79a20da88e","751905b392dff879a6c7bcf7e591521bedea47b2fa90066ac3de131b10ba0377","dd170dbfc4c8978cfbec8cbbad39a9f9cbc3a1ff9d8e8366c1a26278344a8b07","6664c3fbbaf637136604896922c181d2a91521e97a86c359b3084317f4577a23","803901b92b69c9e1f25a1d249fa948d3cea86c84b265c54a14980ede98f33095","7d36633c970afadf925f7a3c36b1ab45f0be03217bec2d014e820615eadfe9fc","b7026620eff1301525ef293efce182d3113aa9218dd88b19517675c383f2d8b4","7637c7d2d718940e0c1978ddad3180208467c8a8d14b3aa539f41f8406f85974","598e586ae65f83870b6b56d7041a4a16432f04a124836b885f1eda80da5ea2d9","015fb6cba9f4a0c5e2fef4dbf7406ea747b003f2d75f764dc48e74713a28c269"]

Anchored

2026-09-01

Public log entry

search.sigstore.dev, log index 2671985937 · entry 108e9186e8c5677aee5d…

Expected log hash

21d04dbed3f9dfa348b1c2e5bdd0c177d7f26175563f32c871f3a55c22274c31 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":"v1788240889164","kind":"published-quote","locale":"de","page":"product:proton/proton-authenticator/de","quote":"Es funktioniert fast überall, wo nach Google Authenticator gefragt wird","rating":5,"review_date":"2026-08-12","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=proton.android.authenticator","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 (fb09dbc79cd8…), 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.