Lamont Coleman (May 30, 1974February 15, 1999), known professionally as Big L, was an American rapper and record producer. Emerging from Harlem in New York City in 1992, Big L became known among under
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 0x074d9a131cf0045b6c5993688e79d60c0239c27a60e175282d3e3a367d8a22f8. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e11467cb-9ee4-45e6-a226-e9131a9c2187.json and https://artists.proofprofile.net/proofs/artist/e11467cb-9ee4-45e6-a226-e9131a9c2187.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).