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 praktische App”

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 2893887498

Proof data

Record hash (SHA-256)

c1bc2e08cdfe86edf74a980f3f0eff4bed27b63015377ca3708aa7697adfcd17

Signature (Ed25519, base64)

Jl1eskBJHkvDZQ6/EhxDjMMtSJEnrEhe7JXKsUS/Mm3osc34f1cym1jVOkifn7ZFmFvpenqTfpydssqcRm+8Cg==

Merkle root

2f068f3de56bebe7a575ba4a979c9244445d2350140e36238e088fa40fbfdd88

Merkle path

["c1bf62b8993e86dcc63a8fabf79ece1a003e90c84880e50e50c8fe6cb507dc91","245a84d817c96caada74335f003ff0569947a1cdde9ee7a4cbaeffb94a891137","fb98129bb9b8d6fe982a26d0e9e0d62d4e462ea819a7001554b2b03ce49c8b65","77636dbaf7bf72e87fd5d3914d22a39145ac510b7a5494f265de21cb12e44ce0","080e4a5851594988c3df1c42e8266643d6927bdbeb0d83e466aec279e9732801","8517fa6a7e49a21db5f92f5f9833fd469c1bdc429b910b9eb886063bb5de1c49","62dc6f32ddac198489aafbd98b0c5dfc13efcce9b00df20fbcfb7d944b24698b","82c5dd052062e7ff682e42bfd85dbe500c5f888ac8d000f6e159895472920890","121a886e78bf986b0fed73f85173691b9c08b818868cd227662449b036117180","ea6ae509a343b345edc2e59dc284a3ccaf3784ce4c76cc049fd7803f286fa8e8","1811ba91aab5685114da7690b72b1e93f565312717eb813f38616c3053a2a44f","38376ec9f35bcd39f5035c8425fc104742746cec8f0f18f678e6ec2b7c8970cb","f798c0971d32a6ae8da39cbfdd643aa26fcc32dd200aa7f9151048a02f8ece59","537f00dd60bfbd8c049786f7eae4da8a735af5b60dacd3bc1b6054b8ac3175e3","58a3dfc9ad8696e92f5fc9960e9c6bc4cc04e270091b574a948593298b33d1f5"]

Anchored

2026-09-20

Public log entry

search.sigstore.dev, log index 2893887498 · entry 108e9186e8c5677af79f…

Expected log hash

90099e0300c6e23b62e79318296ebab91bff130379d248ada57f044f77e72ccd 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":"v1789796056710","kind":"published-quote","locale":"de","page":"theme:atupri/quality/de","quote":"sehr praktische App","rating":5,"review_date":"2025-07-23","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.atupri.myatupri","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 (2f068f3de56b…), 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.