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.

“Sehr übersichtlich, keine unnötigen Spielereien.”

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 3124210377

Proof data

Record hash (SHA-256)

28c84735ac301c5227289fb87ca80ce8e261d37f0a38b8c5d2696867b39b1b70

Signature (Ed25519, base64)

MVmA+0921OLBEf23tgxFIL5MrvoP8Gqa8d5i3lbW/rzUXc96c7+KQYzfSUSh3owed/5IEGBfF5lnWIxafF2XDQ==

Merkle root

3b820b0e91b2475ca02a79fe65f1dcaac35af570ee21f4c868099b9c17e17c1f

Merkle path

["28c74cc344913803b4e64292595fced4144976501d61c02387d34f92e7f10018","3d65578b509051e5c9de1c8daaa24ed4d6722a8eec169583204ad75c4cf7bd2f","a3014eddb6ab31b7c0d50025bd6a6a9317e5582af703d73a2ad3b0e99ce6ffca","1f8306427c48999616d7f13542bff724e4f77b3ffddba41dc75b26e5fa53bbd8","f5fb8652a296d44d5de59c3d532c3265fafeaedca9680a9bd99bb46838e60db6","a41c77cb3537c5db1ebe8bc9955ce7f820a6be5fe961b5696dc775538243c987","ae8b21f5d86379ef2a00b9de13dbd667f6e18ad9e856cb5391fbe53092943d15","2329703dcc8d4082d66e88e36ada923a646fff1aced1790e1e824e1b15c141a9","5396b82f018442372bf138567081c328d260295d112c6ec32ef37e83fe030d4d","09307683c45f7860a661ed33cafebcee84c03fb8d4d17c134acac2cf3da9fbb2","bdd20ada263f7289b666f43c4d7a015c3f7fe7ae0da5e686265782b9410ae796","ffcfed52b9455aa3e50796a1dc6caf3cb86e63134b1bc8918007d3b0e479ef20","833f715febd1c4a136edb6739ec6554c0cc550753cc4001bd667664cbfc7f50b","e448e4cc350a9a69a05538fc74a8236040fbec1cdf0c4908e91135fd4a29e380","92de2c105ee268f1f08dcd9d0a8fc946130cef7b39b15a2b5ed0d7209687c9ac"]

Anchored

2026-10-07

Public log entry

search.sigstore.dev, log index 3124210377 · entry 108e9186e8c5677a0172…

Expected log hash

20a5241ced0c7b94303a7b8002f1aae217df3f1371aea54ff5745a148bddda47 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":"v1791349684588","kind":"published-quote","locale":"de","page":"brand:threema","quote":"Sehr übersichtlich, keine unnötigen Spielereien.","rating":5,"review_date":"2026-08-09","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 (3b820b0e91b2…), 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.