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.

“Man bezahlt für ein Abo um Sport schauen zu können”

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 2543857133

Proof data

Record hash (SHA-256)

fb026c08ff0dbdcee991ff5787cd68d5d6173d71db9f5d34ccc49c0962001851

Signature (Ed25519, base64)

Gc5DtOyVLOqO+9cTOpVBk1mmN3qsMAkTewa/UqzCX0nQH9NqsoHJfLq54cLYo06nBRoMxKi8c7CRWqDvOHjKCg==

Merkle root

cee60bb6c0816d1bc69326ea12cf0c5c00cbea13afa283147bf24b52e30f839c

Merkle path

["fb03de841e17aed1473dc7a71e940c6a2f0647edab255f204536594da9ddd902","79ec7fec91f37bff773bf486bcf650254cf3a87dc52d71d7b2972a101359d0cb","a2bc6bea83ef7ae2597d4e822e50c1703f96977c9aac2c5d39fda650bbc1765b","2eae0eac3d9f05fd6c67335de7a64b369b813546fc447fbf010a70461c0558b3","6e58aed19c1882c91bc970eea8748822fc208fef00ab1a0d5b758e2240d401a0","de3170d3e479e11041d088e5ea3c5aa27bf11528192a7f4f55960ddff8107e40","b39ae5baf805ed8ac76766b756ee7950d4f3e44709189bb1c730081a367f7407","5f4e9499f206771b87089b0a9d0e78fa66a5906038b8ed09214e5a5498907d29","5e8b7b291593a5fb57008cd07f012938347d0aca14e3e33ec5234885b6f64d64","a00ebfabc5ef083e95952d84021c98d3cc55302f80b66bb210097ff6a1614ef6","8eede5eaaaa39aa311d5d82caff567170f05a3f5da864babf80accb43c38ea8d","78caf62780a7cd32d3591546c7643819cd8e2ced71a3bdf696f7fa96ed9676b7"]

Anchored

2026-08-21

Public log entry

search.sigstore.dev, log index 2543857133 · entry 108e9186e8c5677a5231…

Expected log hash

d8e1ac8b740526c2915424d7f7c6bce881a4ef05d0a3a3dbd88e4c760e36623e 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":"v1787288037224","kind":"published-quote","locale":"de","page":"brand:swisscom","quote":"Man bezahlt für ein Abo um Sport schauen zu können","rating":1,"review_date":"2026-07-28","source":"Apple App Store","source_url":"https://apps.apple.com/ch/app/id798597407?see-all=reviews","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 (cee60bb6c081…), 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.