James Bagwell is an American conductor and professor at Bard College, where he is also director of the Music Program and codirector of the graduate program in conducting at the Bard College Conservato
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 0x56c26082fbbd9145c1731ae3a786e09ef97eb72e7edaea5dddebd3168bba4a79. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9cf00d45-29b5-4380-b459-f25e788e59b3.json and https://artists.proofprofile.net/proofs/artist/9cf00d45-29b5-4380-b459-f25e788e59b3.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.