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.

“seit Beginn an und haben bis heute keinerlei Probleme gehabt”
Apple App Store · 5/5 · 2026-05-18

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): 077147f92027176dd27ed281bab51c5fcc1b315a6522ef7ca15fab003c9445d6
Signature (Ed25519, base64): z3eRTSZD1MWKkTTKyFj11wKr9fvPyARbF659MMh3UW5vVpGHTwpxxIA2rqnsuAeC7vyQkSXxmT2LwtCu6mcCDQ==
Merkle root: 49133e6803d24035baa1544a5c730db93dbaf832df48f680ca855944337404a2
Merkle path: ["076f99a4ed6030ffd875ba8b927396892646b4584be9b56b888a34ec3c4f108c","fb1ae0f89312c8771b0a2ea51f4b36e59a657392f10096cd81d69b5b424ac01f","33a1201ede9892543c60971b84cd34fd8dfe87e89e5c002e8f54fdb8548c1d83","6e04483b8a1ebf12a142430b295c5d79eb27474b0221649e070fd1299da04472","c338db407f2f80232b6c557e912df66cf26b785e7afaff82fad93fef2c7bfe50","ba26b6a49503dc235d227750900d81b0759f5b1ac0b65f8b0a71381ed8c91c97","947b1ba83256613c2e778b165508775d051f929c47ff329a8698a74004534673","ba122094068d7245e7186994a04667c79c437a0be61c8333789e3aa68af1e0ab","6d9a01b95f52492b69be22f5ee65ade71cdc88811c0ea370ab431fcb269c8c6d","a0edb163cb88df935426089e2320a04d62c4f33efcaae464a72e6b2ca8ab2657","c5d93b1569fff12a05db8575101d33a910e764447ea663fbc03c9ce9ca3f1b89","1cacba8ded6d3fe4021b99b9ea0c9858548477a47eb1dfa6995591887eea7442","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":"seit Beginn an und haben bis heute keinerlei Probleme gehabt","rating":5,"review_date":"2026-05-18","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.