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 ist einfacher für mich mit Brieftauben zu kommunizieren als mit Threema”

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)

5b87ef279657905ac64439dc8dcebd40cad1384913361445e335a1d8233021e6

Signature (Ed25519, base64)

ICYFHAqamtZwIiB0RYvxuaZTmOPChvQrNPVwal0jTLwOZl2O5hkXWizO/oAkwkO3SJ7G9UWQF0WZBl9UYizXAQ==

Merkle root

677e672fa444dfe5152ab91687c577772e13723ca441b5c8063508daedacfe44

Merkle path

["5b890df031f73c519612d9878f3af9bccb7f8812e2192c5d35aa3379ec50cd30","2fb1bca60aca89c56b9c61805a5dde441b11c654b280118d2c1f8458546db761","378e69c3f1dbd337712d56f260f41465096a86d72d2496947e90569c4150922f","5773de559553f8deea7859ff8cb819e7fff446fa6001d8943b7aa157782c2374","c22f3f937c9f9956cfa12d032b847b1646afabefde60326158e2e930f4163fb2","a05348a7830adee526390e312f4a44d8c467cc9c475c26821947f7ff3c952b89","d03e96ccc52a856e5ac92f33513eeaaa11395c0c4a61d299bb929fac8e21e89d","8ebaca93745686d6a773571b909a3d0d8644052d5d4e388124f79335c3550da1","959913af61bfedf6f92c958f46b835a3203fd4df2d2cad6d87cfc65162fb357d","16eaf94d8776093fa00e1313f9c3e88f6100478eb2b0707785de0ce31926a39b","60a7784cbc91dab9ef64f13ea3efb0b7d58884c2a949cafb01c0ef3eec198773","6d0314f31c38e934968ee8dac764e4849575f56bca662e0e3aed0a15797b4dc0","1b074434db9f65ac83f955b267ab98f99350feb9751fde25d350ed3bb4cdde81","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":"theme:threema/delivery/de","quote":"Es ist einfacher für mich mit Brieftauben zu kommunizieren als mit Threema","rating":1,"review_date":"2026-07-09","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.threema.app","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.