226x226px|thumb|A single-breasted, reefer-style, navy blue blazer, dressed with brass buttons thumb|right|250px|A patch logo blazer from historic Ivy style retailer J. Press A blazer is a distinct t
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 0x1152f5bb2146fc46e23b23a8984d8ae3529d3d859515e717c25097373b3ab60f. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9534cd72-21f1-40ef-9b6a-d352c89fffec.json and https://artists.proofprofile.net/proofs/artist/9534cd72-21f1-40ef-9b6a-d352c89fffec.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).