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 0x717e6b7ac73254ceb88cc48d05066a2d40f386a07e08894d2a55fea6a19dea64. Chain 2 (Bitcoin): anchored in block 954019 (2026-06-16T23:44:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/37a11448-2976-4485-bddf-8887bf464be8.json and https://artists.proofprofile.net/proofs/artist/37a11448-2976-4485-bddf-8887bf464be8.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Music for Contemporary Dance, Dance Drums: Volume One
Music for Contemporary Dance, Dance Drums: Volume Two
Themes from "Communal Bloom Strategy" (Dance Film Soundtrack)
Music for Contemporary Dance, Technique: Volume One
Music for Contemporary Dance, Dance Drums: Volume Three
Music for Contemporary Dance, Dance Drums: Volume Four
Music for Contemporary Dance, Dance Drums: Volume Five