IMAX is a proprietary system of high-resolution cameras, film formats, film projectors, and theaters originally known for having very large screens with a tall aspect ratio (about 1.43:1) and steep st
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 0x3c0c8a8bfbbf0eb52d18a4b2a914d06de034ef59ab7f5f4551a7f8f7676e982f. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8e350b86-71b9-42d1-9624-ec14aa339e3b.json and https://artists.proofprofile.net/proofs/artist/8e350b86-71b9-42d1-9624-ec14aa339e3b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).