Ustad Rafique Khan (born 30 June 1968) is an Indian musician and composer who plays the sitar. He belongs to the sixth generation of musicians from the Dharwad Gharana. His father, the late Ustad Abdu
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 0xd108b7169a8fbe005dacae0ba1669c2f3c8f5b4649a4db83e1b080994d528a20. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/33ea45f6-186a-4622-b9c5-80efa0c09f60.json and https://artists.proofprofile.net/proofs/artist/33ea45f6-186a-4622-b9c5-80efa0c09f60.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rafique Khan: Raga (Indian Classical Music for Sitar)