Nighthawks Orchestra is a New York–based musical group, led by music historian Vince Giordano, that concentrates on recreations of the hot jazz and dance music styles of the period between 1919 and th
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 0x090d08ec559d13055c7f4885a28994aa1c403fc0b07d45acdfa5e3cd9d433942. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8644fa40-c767-4d24-86cd-2fabcc89b2ab.json and https://artists.proofprofile.net/proofs/artist/8644fa40-c767-4d24-86cd-2fabcc89b2ab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nighthawk Orchestra with Joe Sanders and Carleton Coon: Rhythm King