"Mardi Gras Mambo" is a Mardi Gras-themed song written by Frankie Adams and Lou Welsch. The song's best known version was recorded in 1954 by the Hawketts, whose membership included Art Neville, a fou
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 0xcf6948764ee2d04179e6e5f2ac3cc16d7ef449c45dcaefe6637dc769724f1f9d. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d4b8992d-43de-4828-be70-22639c49a230.json and https://artists.proofprofile.net/proofs/artist/d4b8992d-43de-4828-be70-22639c49a230.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).