The Villalobos Brothers are a Mexican trio of violinists, singer-songwriters, composers, and multi- instrumentalists. They have performed at the Latin Grammy Awards, Carnegie Hall, the Solomon R. Gugg
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 0x6788c300bf54141b5e3d214ca46680cf2908ed6a7263f65572b428197d32275d. Chain 2 (Bitcoin): anchored in block 953978 (2026-06-16T17:11:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2c2031af-4bfd-47b1-a736-3c9ebc2be299.json and https://artists.proofprofile.net/proofs/artist/2c2031af-4bfd-47b1-a736-3c9ebc2be299.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).