The FLUX Quartet is an American string quartet dedicated to the performance of contemporary classical music. It was founded in 1998 and is based in New York City. The group is renowned for its perfo
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 0x75ba96716caa610d853ca78b73e60437ab46763ecaf36ffffb8b7fc220421494. Chain 2 (Bitcoin): anchored in block 954115 (2026-06-17T15:44:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/77c1d9a1-3390-457c-8e0a-3d4bd6ecd504.json and https://artists.proofprofile.net/proofs/artist/77c1d9a1-3390-457c-8e0a-3d4bd6ecd504.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Feldman: String Quartet No. 1, Structures & 3 Pieces