The Fila Fresh Crew was a hip-hop group from Dallas, Texas. consisting of Fresh K, Dr. Rock and The D.O.C. (known then as Doc-T). History Dr. Rock's association with Dr. Dre during his stint as a DJ
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 0x4edc94dcbba047c8f0ef8c9d87709081d1222f1e24b00c6dac4f774cd5a84a37. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/341d8a1c-fa5c-43c2-8dbe-bf1aeaba42ab.json and https://artists.proofprofile.net/proofs/artist/341d8a1c-fa5c-43c2-8dbe-bf1aeaba42ab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).