La Mafia is an American five-time Grammy Award-winning musical group. It has its roots in the Northside neighborhood of Houston, Texas, and has charted a course as a Latin music band. History La Ma
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 0xb622ffb2d812c29857da0252906ff4668e43279759ff8be6d57939d50c9aa2f6. Chain 2 (Bitcoin): anchored in block 954573 (2026-06-20T15:45:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b50cfd60-f730-4ab7-86ca-44ab4bc78d8f.json and https://artists.proofprofile.net/proofs/artist/b50cfd60-f730-4ab7-86ca-44ab4bc78d8f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).