Gary Lee Usher (December 14, 1938 – May 25, 1990) was an American rock musician, songwriter, and record producer, who worked with numerous California acts in the 1960s, including the Byrds, the Beach
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 0x26acd22332ad0b01c11e73a4ef801e697637a2daa864522c2a23d8c79bd2aef8. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/37f43166-35a6-441a-9ea8-56583ca2303d.json and https://artists.proofprofile.net/proofs/artist/37f43166-35a6-441a-9ea8-56583ca2303d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).