Phil Guy (April 28, 1940 – August 20, 2008) was an American blues guitarist. He was the younger brother of blues guitarist Buddy Guy. Phil and Buddy Guy were frequent collaborators and contribute both
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 0x747aeab6ddfda882486c11599c0591f6bf5d1be71f08a7e5fde0bb9979fae958. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/597e2101-06d1-4f4e-a5be-903178851622.json and https://artists.proofprofile.net/proofs/artist/597e2101-06d1-4f4e-a5be-903178851622.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).