Dragged Across Concrete is a 2018 neo-noir crime thriller film written and directed by S. Craig Zahler. It stars an ensemble cast that includes Mel Gibson, Vince Vaughn, Tory Kittles, Michael Jai Whit
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 0x7a0a741650151b18590154a7d42b2d7dbd940e32a341e10afd1f5b876eb19c0c. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/24813529-2e28-477f-8091-d11dacb14d5f.json and https://artists.proofprofile.net/proofs/artist/24813529-2e28-477f-8091-d11dacb14d5f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).