is a term primarily used to denote people of mixed Spanish and Indigenous ancestry in the former Spanish Empire. In certain regions such as Latin America, it may also refer to people who are cultural
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 0x5a96cbd2e59413e588c54170095f674cadd4022bcdadcd9e8bd2540ba85c7984. Chain 2 (Bitcoin): anchored in block 953851 (2026-06-15T23:06:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0160e497-258f-4796-ac32-5e571e034c34.json and https://artists.proofprofile.net/proofs/artist/0160e497-258f-4796-ac32-5e571e034c34.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).