The Core is a 2003 American science fiction disaster film directed by Jon Amiel with screenplay written by Cooper Layne and John Rogers and starring Aaron Eckhart, Hilary Swank, Delroy Lindo, Stanley
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 0xb1e12393f258016e5ca7db5d0dcc9a5e576b21e632ec36921b9a3763ef92bb98. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d2e9fd79-83cc-43ae-93de-7c5cf960fd77.json and https://artists.proofprofile.net/proofs/artist/d2e9fd79-83cc-43ae-93de-7c5cf960fd77.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).