Christopher Phyromm Washington, better known by his stage name C.P DUBB, is an American record producer from Los Angeles. He is known best for his production work in hip hop music, most notably on Fre
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 0xb125fef54ba950f978bb8b36d8eb9edef47035622d159d80d19bd7f245d3f236. Chain 2 (Bitcoin): anchored in block 953996 (2026-06-16T20:04:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2f9538f3-89a7-409b-afe2-ef81f10f926a.json and https://artists.proofprofile.net/proofs/artist/2f9538f3-89a7-409b-afe2-ef81f10f926a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).