Brogan or O'Brogan, is a surname originating in Ireland, anglicized from the original Ó Brógáin. The form McBrogan, is also present sharing the meaning of O'Brogan, essentially "son of Brogan." The
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 0x2fcaff2bdb4806ab036dca1f6457a922ca9126469c6602ad6b5835ed876de495. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f959b1ff-4059-4084-b1a2-665642ff2e5c.json and https://artists.proofprofile.net/proofs/artist/f959b1ff-4059-4084-b1a2-665642ff2e5c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).