thumb|A street in Las Salinas. Las Salinas is a town in the Barahona province of the Dominican Republic.World Gazeteer: Dominican Republic Originally, Las Salinas was a salt mining town, which is how
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 0x0038179c33b68fe0bb96b7c0a92f529207d69c2c96fdc4235b0a313325acb7b7. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a67b5c3f-6982-4db9-bb3e-d8fa799124ac.json and https://artists.proofprofile.net/proofs/artist/a67b5c3f-6982-4db9-bb3e-d8fa799124ac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).