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.

“dass dieses Foto nicht akzeptiert werden kann aufgrund schlechter Qualität”

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)

e672248b7a9c9431c3aa90ad166f47f37f455fc8072f25615a74f414b4eac68b

Signature (Ed25519, base64)

VBtAfVF+c5t8fYYtrJsnRtVf+Y4emuNVJ5G+JxXuTWNo/ihRtfzp8uNsg01IHk1lenr/7NgaotUWVWQX6mwPDg==

Merkle root

2f068f3de56bebe7a575ba4a979c9244445d2350140e36238e088fa40fbfdd88

Merkle path

["e66ecf4c87b4b2ae9d47d9e473852454fc9aad3576d121d691c00d2e75122e68","8ebeaa93f7e6184906d0d0f1e9e6ce13ae59104a7c6f7a2cdd44bcc5b964c764","5b247b4c14b75346b09649ce9f0bd3f9171498903eb3902305b46db112823104","45920385f1c238fcf527b3b5b412510498b95ee427f4a56e36e9e8ca9534de95","c96ce65c379daa18d96ee2733b1c11fcf8dd71e2c8791de349a667ecea510f9c","cdce49474390c3802045d1258e44c92e75e81ea8c22a294d356d9a58d6409b53","9d39194f9370e55b21b83b0afc5410c2754b9f3386d628912d62474d1670b3b9","a1d11f24a4e3b2330f0cd85fa36c8f30678a5f1f5d775e961db831b73a55a8bc","8efaf117ffb56bb8c1fb2de61de6e374a450f551a8b437268b500f20e2b46596","4aaefa4eb20024e4aa383f59cbd2d0fec42292305e1db86ecb95f4c9ff47b4b1","7aa45ce6be7da29aeca0302d172ca2874a01f87e6b4addfd75180817d87f4620","adfb7af951ab6d82fe2ac7465e5f822234f3eb32c74ff914d3090db1700baa73","34bf35d805c4f7af315854dc10a7a10ae0ea054d46dee40b360c3f04f8b8e60c","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:concordia/quality/de","quote":"dass dieses Foto nicht akzeptiert werden kann aufgrund schlechter Qualität","rating":1,"review_date":"2025-11-26","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.concordia.myconcordia","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.