Isaac Nathan (179215 January 1864) was a Jewish, English composer, musicologist, journalist and self-publicist, who has been called the "father of Australian music", having assisted the careers of num
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 0xced7773c49ff7987879dc09abb4f711e02caf5453710631f314baad87895b348. Chain 2 (Bitcoin): anchored in block 953947 (2026-06-16T13:14:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/236a3fa8-a4da-4d15-a17a-0da47bac024f.json and https://artists.proofprofile.net/proofs/artist/236a3fa8-a4da-4d15-a17a-0da47bac024f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).