Chino or El Chino may refer to: Art, entertainment, and media Chino (1973 film), an Italian film starring Charles Bronson Chino (1991 film), a Nepali film Places Chino, California, a city in San
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 0x9e94c31c09774958c998aa362fcbaff443db90bf1f0877b97f15bd589f198634. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa70b07f-0736-49f1-aa89-9eecd8c8b4ff.json and https://artists.proofprofile.net/proofs/artist/aa70b07f-0736-49f1-aa89-9eecd8c8b4ff.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).