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 Gmail-Symbol wird nicht angezeigt.”

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 2514013184

Proof data

Record hash (SHA-256)

0b4a790c935159650997e12c3c0c7f5347142692c1421972c07c23a8557f2ef0

Signature (Ed25519, base64)

gv5vLf6RD3yO1IrG1YPIRpaxet9HjzmNj3i2jkmUkrZisnHZ5E/YQumx1rur9q9WNkECWwtX2iZH3fpaeQ/fCg==

Merkle root

677e672fa444dfe5152ab91687c577772e13723ca441b5c8063508daedacfe44

Merkle path

["0b4eac96b911b246014b4f651d0f68d57f5a708d9d58ad98e564bd5fdf4f31bf","bb4ea06ebd337310a0179b2d810a3b64bb2b667cbc78ac4cc8237859c3cd159c","52a656ac6877fd87a66b5a3cb0cd7a3a9779e5c27c808a92bcd005ba53069e48","c7ee08283a5d10ea9aa7b8fc2806492109103a6741d7c1b97d7d2ec73c6eee3e","a0f02bfedafb9442e7e2edc064da0861f9482be4a837498fbc8b1a61fc5b8596","f912500614b1e09979d812736eccb7dfbfb39f919631b9936d39ff54929d764f","b5f56e057cfb7438e3a9d7abf7d38ff7c0509bda10e6cb4bfe665433c4f24714","39ecc2d9ffcd02850f8ab22d52b77c93afc65b98db820537759d4dd16e8b35b7","0ec871a2f3bed0b10f8622e1563d393b9818af834a6853042b13ece1c31b830e","f70c91be59457293a6aa3a1cde6cb905d258ccb6f8d631d2a169e0d38d923eee","8e7490bbedc676f438febdccf36625304e18d2651e5b7fb1f7e037e5127042d7","cfbc3eb809c4500188d3e4ec12eaac8c45175062366fe7032901ada41eb5cb0c","bd6e996c146ac2fec0eac3e8c06d1c7b69fe86b69de929b1fa7a0fb372eb8d03","4160c2bd6ca5556fcece7b88bcddb2c951ca86b46a4df6829fdfab8c09bafb4a","188420cfe03d9830600dc87f84622c41659cea53d9b8db8954bfc926ce1d4dac"]

Anchored

2026-08-19

Public log entry

search.sigstore.dev, log index 2514013184 · entry 108e9186e8c5677a6b00…

Expected log hash

a596e5a342226b61371cdf76b5c8be8e37a3d00e7ffe8f7b0b550e1a8d1459dd 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":"v1787122978040","kind":"published-quote","locale":"de","page":"product:proton/proton-authenticator/de","quote":"Das Gmail-Symbol wird nicht angezeigt.","rating":4,"review_date":"2026-07-17","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 (677e672fa444…), 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.