McCall comes from the Gaelic surname of Scottish origin, which means "son of the battle chief". The McCall family was born on the Scottish west coast among the ancient Dalriadan clans. Notable people
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 0x22f529b57f681f005413a96e954836205c34fca9adb2b76da797d9482af97b78. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0fa0b8b7-bce0-4b36-a96b-da80ecdeb998.json and https://artists.proofprofile.net/proofs/artist/0fa0b8b7-bce0-4b36-a96b-da80ecdeb998.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).