Robert Boyd Holbrook (born September 1, 1981) is an American actor. He made his acting debut in the 2008 Gus Van Sant film Milk and had his breakthrough portraying DEA agent Steve Murphy in the Netfl
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 0x60b83d63478b4e8f77edbd49c5751fef7edc69b0645d58a08f645a9e97641a0f. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/70819671-ba53-480d-a3ce-4b34ecb8037c.json and https://artists.proofprofile.net/proofs/artist/70819671-ba53-480d-a3ce-4b34ecb8037c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).