alt=|thumb|212x212px|A "Chicano Power!" by M.E.Ch.A. CSULA is held up in a crowd (2006). Chicano (masculine form) or Chicana (feminine form) is an ethnic identity for Mexican Americans that emerged f
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 0x66910fb32462f2b5ed474c8522fc5d9464fbe3e19a2e79dd1fe0f4a662900b47. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6694a193-b1ac-4b78-b8f9-16afb00e8383.json and https://artists.proofprofile.net/proofs/artist/6694a193-b1ac-4b78-b8f9-16afb00e8383.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).