Jeffrey Alan Kahane (born September 12, 1956) is an American classical concert pianist and conductor. He was music director of the Los Angeles Chamber Orchestra for 20 years, the longest of any music
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 0xf903fef89b28bcc0b7118d1ef94102d3630deca20b4e32d4ee9156d5c0e026f2. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f5aa105c-6300-4ef9-86eb-af444d417c77.json and https://artists.proofprofile.net/proofs/artist/f5aa105c-6300-4ef9-86eb-af444d417c77.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).