Darwin Turner, better known by his stage name Choppa, is an American rapper and singer. History His first album Choppa Style was released in 2001 by independent label Take Fo' Records. The eponymous
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 0x28e136898d6e69ca23b57384d11268b74e2088078aad04b2447e3aa1b33094f4. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c9d3b63c-2853-42d9-a18e-90f46c42d1ac.json and https://artists.proofprofile.net/proofs/artist/c9d3b63c-2853-42d9-a18e-90f46c42d1ac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).