Churrasco (, ) is the Portuguese and Spanish name for grilled beef prominent in South American and Iberian cuisines, and in particular in Brazil, Bolivia, Paraguay, Uruguay, and Argentina. The term is
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 0x0f8a1186b03c02509d7145bc279b63ade21ebd411de4ab825ad27e0058b6303d. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2ba16155-0562-4b5f-bbec-40b1635cace4.json and https://artists.proofprofile.net/proofs/artist/2ba16155-0562-4b5f-bbec-40b1635cace4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).