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.

“Wenn ich begeistert von Threema berichte höre ich oft: „Aber Threema kostet Geld.“”
Apple App Store · 5/5 · 2026-06-03

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 3139760477

Proof data

Record hash (SHA-256): 25904e29af196f4e8d1dbfa3e42887306b4b2d570584c8768bfb3cb2bbe045b8
Signature (Ed25519, base64): gzxiDYc1DQymnD6u3XbE+oQ/F12D6HKWGV77KL9xLD86uzIVaZ0LNMBHxd6Ga7v6lr6E6Z8miu3rQ2FMKRynDg==
Merkle root: 49133e6803d24035baa1544a5c730db93dbaf832df48f680ca855944337404a2
Merkle path: ["259473cbba23ba84d81645ec7c0a95893f18c895b5d0959f4198b8b15c9a84d0","f81a43eeada923392c69a1aafc81b241eeb780aa6efa3746e128924a4e0bc598","f6a0f95851f91b42d86f30934c7aed1f1269b106c630b7fd009ea80df50390e7","160de14db06268cb5c0953e2f6c6e9c56feb44642fafff91b8ac598db1ac0abc","e864a91d5e96bb0959e90124180eb28070f607ec2a4ff12ff9651f6883fcc53c","d7d9a2b7a153e67638359565b811ac725df6de51c969b62864ed0042720e003c","fca2221fdf704d5c83178081773ef6be499d131fee3198d3906b869b2506e153","71b4c71a2d9733d316d5e971d521e7348682acba8bba03a083c1e150fb582dd4","b5019739393a2224a6884c1105c95df6e02dad701f8651bc74924267d2585980","8f0a4fb52d22c938d1729fc5ca911e552041b05ac712a1113609173466892a50","6feb752f8bf8a62ad7f87829a4654f3913b8722ba868189c75e83cc0b3bbbc4f","3fab624705af963c8b90d8ecca330b0aee40203a806033b0565c84e0ab95e53e","da05ecf7377d5697c026f830a74de1a09359f7b60612fb722c789caa15cbbf29","90889d6ebe241f2d2f9092870d002ba795f7d27137f7582a09b4369ab1517327","d81f506ca96dea712a8b56759200b270fc625cf496d323ded3475eaafeb2d916"]
Anchored: 2026-10-08
Public log entry: search.sigstore.dev, log index 3139760477 · entry 108e9186e8c5677ac88a…
Expected log hash: d54b6e5e20903e9be29e6a5973227ee9b3dbe61bdc0fa6481a5788472cd5976c 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":"v1791428432986","kind":"published-quote","locale":"de","page":"brand:threema","quote":"Wenn ich begeistert von Threema berichte höre ich oft: „Aber Threema kostet Geld.“","rating":5,"review_date":"2026-06-03","source":"Apple App Store","source_url":"https://apps.apple.com/de/app/id578665578?see-all=reviews","v":1}

Verify in the public log

Open the Rekor entry (pre-filled with this proof's log index).
In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (49133e6803d2…), which ties this proof's root to the log entry.
Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
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.