McKoy is a surname. Notable people with the surname include: Millie and Christine McKoy (1851–1912), siamese twins, "The Two-headed Nightingale" David McKoy (born 1983), Canadian football player Grain
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 0x588bdcdc4bff3772f844c8101bb07b0b29e179ad32c8f4c8a920819b4e55ef55. Chain 2 (Bitcoin): anchored in block 953707 (2026-06-14T23:22:21Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7ccb9597-2ca6-4d73-bfcc-45f06dd0f5f5.json and https://artists.proofprofile.net/proofs/artist/7ccb9597-2ca6-4d73-bfcc-45f06dd0f5f5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).