thumb|Jazzklubben Gazell Club 1952 Gazell is a jazz record label founded by John Engelbrekt in Stockholm, Sweden, in 1949. History In 1949, John Engelbrekt created the label Gazell in Stockholm, Sw
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 0x7983e322743f6f4c56e6eac12ec8e6b9dbf7d4ab1d5b489d998df8905fffab98. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/09c03719-9efb-4a63-a98a-4dc232cad8dc.json and https://artists.proofprofile.net/proofs/artist/09c03719-9efb-4a63-a98a-4dc232cad8dc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).