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 2515033577

Proof data

Record hash (SHA-256): 666bbb2be7d76a9e320cf630bc39882a507d8c7873b8de19eefacc52df8a8d47
Signature (Ed25519, base64): I8T6vst5ec2w1U+8S1CFBU6/hOtHXkLnth242Xf9BfzRIelWJ1eLQTavhDG85NjlmObZpDuikolpUpuHV6PPAQ==
Merkle root: 62390602d5b1801b2c96dd61074fd5810278db65461e368ee19c9bb147d249dc
Merkle path: ["666b1ac4ef6addd5f8d81f40214fb0dbd2a6353868e1237b43c1b02b05f511e1","1c13873e576ab13804f39e2a66b01814115905dae533a31f301a7efc717048a6","ae009e80018c9369fb7b3b64a7a50c3f421c8050429b1bce10433a8e83a2aa38","bab6f4caaec13757d359058789baa3feffe2bb8f132f62c586c2b1d945598528","49f261b053300a0157f6966eb1bda744d1540d31109db9fe94f0eb903d829247","17462aeba26c0440d201f771bc3f59489de53d91794920f948410954dfe4ef6c","4cfd7449982d49ea829b4f49c316ccf69c0593b6abe91d4525888ba692e77419","c94294ac82780d0b9a6e004e27a40e059fb0bf8ae84331b36283ed3e24598e35","d68761447dff9d90d4db442ee71e66ce2051c324337396ac421870d174e3ddf6","bc8bf56776142307c1ca7d3a3513b38ec141d77afae8de425352c55c260786dc","f0c371e3549c31ccccf5de55acf0cb3bdeb258801c4d15f1bce6c1d6c854da0f","b0dc0c20548098133de3f9452c9e18550b81c81910057c978f584db23dcbfca8","a5b0f88103dec63c80bc1707eab835572838fff5f43aed265827460436ca21e9","baf7c3a9a57269bbb0661385ae981f5f3219ae8da84a7502572e283df3bc7435","9092fce07a46a5708f071a70ba5ae2d3ebe27de5e813ea1756180e7747d7c5d9"]
Anchored: 2026-08-19
Public log entry: search.sigstore.dev, log index 2515033577 · entry 108e9186e8c5677aaea6…
Expected log hash: 458ac564101d02a2c8a5f98465ce4e920300682f0855e017234ab870c48a16cf 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":"v1787135948936","kind":"published-quote","locale":"de","page":"theme:threema/price/de","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 (62390602d5b1…), 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.