thumb|The Basor weaving bamboo baskets in a 1916 book. The Basor are a Scheduled Caste found in the state of Uttar Pradesh in India. A caste is a fixed social group into which an individual is born w
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 0x7cba76c85c1048e4d1e4493b9db3ee415e6052768250c593f5256b8d970abd2e. Chain 2 (Bitcoin): anchored in block 953877 (2026-06-16T02:39:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/047c947a-c0fe-4174-b769-12c64091bca2.json and https://artists.proofprofile.net/proofs/artist/047c947a-c0fe-4174-b769-12c64091bca2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).