Phil Kline (born 1953) is an American composer, sound artist, and performer most recognized for his Unsilent Night (1992) and Zippo Songs (2004). Beginning as a guitarist and singer in the New York Ci
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 0x53a65d21c9c92d5db95a0cf7ab1f057af189099c44de23215e247a6d2cfb9f12. Chain 2 (Bitcoin): anchored in block 953877 (2026-06-16T02:39:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/05fdedf6-d375-40c0-840c-a8256c8864be.json and https://artists.proofprofile.net/proofs/artist/05fdedf6-d375-40c0-840c-a8256c8864be.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).