Clyde Lensley McPhatter (November 15, 1932 – June 13, 1972) was an American rhythm and blues, soul, and rock and roll singer. He was one of the most widely imitated R&B singers of the 1950s and early
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 0xecd428e5ea327bf67e829aa1565b1bc2d2a623d5f4c5012142037ac14e0e8b38. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a72b2c45-6b46-404b-85ff-b5316883383b.json and https://artists.proofprofile.net/proofs/artist/a72b2c45-6b46-404b-85ff-b5316883383b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).