Brumfield is a surname. Notable people with the surname include: Don Brumfield (born 1938 in Nicholasville, Kentucky) is an American jockey from Kentucky. Jacob Brumfield (born May 27, 1965, in Bogalu
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 0x8412545d5505f130c9d1384509af19db96b2c7c1d30a46b1e26241386d3b5518. 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/378e52f3-6cc9-435a-ba34-1b0f47010162.json and https://artists.proofprofile.net/proofs/artist/378e52f3-6cc9-435a-ba34-1b0f47010162.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).