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.

“blue premium bis blue super max :D”

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)

f5f85ae387641a056e16c2c91fa9adc30b000bd10806a90b9f321a87d611f50a

Signature (Ed25519, base64)

1iNGFLitGVZQQ4mt75I/G8hddWLzBl2LZH6VvRS5lF48dMCi6IbXxLRtMXJQZzxvEDR6Y8x1TgqKeJ4qijOAAw==

Merkle root

62390602d5b1801b2c96dd61074fd5810278db65461e368ee19c9bb147d249dc

Merkle path

["f5f7a78b3c3434379effbb21e45e2876b334c1c303667f0bfc50265c97dd845a","33b59a8e6b474989a78bd0948fae2fc7b756630606e0b91bb0235a4451a60fd7","2fea5b020b5f186f212ccdd565f3ed29cafac1a7163be37c093cba9661b6a341","cebe2a99b373419982f44b4d5654ecb8dfa880028e71fca89ca63cfc2857dc25","f02260c861ea8a2424751d1bcd07f3b8de891f2f54657c25e0710d3c33b86434","baab87bac78fcace094036a52b0fbed890bede80a5d5ef1217aa3fc40c2fd9e3","384376bb2f15b599d5df5fe211dcd2dd73c27108855c667c04bce39440108ff2","5afb57b0f1964004b53f42d6ecd3bb47e1af52e8a5d7162ec73738917bdaa510","d566cb9c89d71c994489537fe2ffa8ad59f64df606ad34813072ea3e380735e6","6413fda37a9c66fa8c629137e637e2cbd17bdd8ba822cc2dc59faecfc47087bd","1b04545f3c202b025cec838fa73d2a17cb98e80ccaf12f3f519d12c437a8a5fe","377139030ce6dee03810e7f38bfae3d3df36862441f5f2621ca6d22dd21ba0f7","17e33114dc02b67ed59a752ab775223f702cdee87d0b28082386d0d64e98d9fd"]

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":"brand:swisscom","quote":"blue premium bis blue super max :D","rating":5,"review_date":"2026-08-09","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.swisscom.tv2","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 (62390602d5b1…), 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.