thumb|A silver screen on a frame. alt=A black-and-white photo of a movie theatre, featuring a screen on stage with its rigging hidden by black masking|thumb|A silver screen as seen in Victory Theatre
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 0x24e0482c92aedb39aa58f6a35217e3ea9874cf93a62c5cdd23f05a4a996f4756. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a592fb65-2a0b-49fe-8d9a-560d37f13784.json and https://artists.proofprofile.net/proofs/artist/a592fb65-2a0b-49fe-8d9a-560d37f13784.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).