Derrick Baker, professionally known as Bigg D, is an American producer from Miami, Florida.Pajot, S (2010) "Bigg D: The Next Music Mogul", Miami New Times, November 25, 2010, retrieved June 5, 2011.
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 0x389050774f9e95b1e9717281c34e61aafa6e96f6c11651be7be02d0aabbc7191. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4dfc94a1-1096-418b-878d-c0e81dafa0d2.json and https://artists.proofprofile.net/proofs/artist/4dfc94a1-1096-418b-878d-c0e81dafa0d2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).