Contemporary jazz may refer to: Smooth jazz, a musical genre that evolved from a blend of jazz fusion and easy-listening pop Jazz fusion, a musical genre combining rock, funk, and rhythm and blues Co
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830f3188a47cf58e83a099a91b3104f353c4c01244c0f4629e764e5164377124. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5481b62a-e783-4a93-8847-caad7be38812.json and https://artists.proofprofile.net/proofs/artist/5481b62a-e783-4a93-8847-caad7be38812.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).