Joshua Baret Henderson (born October 25, 1981) is an American actor, model, and singer. Henderson is best known for his lead role as John Ross Ewing III in the TNT revival of Dallas (2012–2014). He pl
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa8ae73e567b4ba0046b213ae97a29417974c5845d6ac2a53af8c8d4e6d84df. 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/28889175-09be-45c8-bdc7-a40b29aaf53a.json and https://artists.proofprofile.net/proofs/artist/28889175-09be-45c8-bdc7-a40b29aaf53a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).