thumb|A set of Finnish keno betting slips Keno is a lottery-like gambling game often played at modern casinos, and also offered as a game in some lotteries. Players wager by choosing numbers rangin
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa972a17eb346ee58f3d519fe78b9ba35ecc1f1279b0dbff3863c5f1482e90f. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/994c9924-590b-4316-a115-db842aede9cc.json and https://artists.proofprofile.net/proofs/artist/994c9924-590b-4316-a115-db842aede9cc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
KeNo presents: IM SOMMER KANN MAN ALLES SEIN! (Original Film-Soundtrack)