Samuel Roth (1893 - July 3, 1974) was an American publisher and writer. He was the plaintiff in the landmark 1957 case Roth v. United States, in which the United States Supreme Court redefined the con
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 0x6b94915dfe7185d291c2ba55b188b02642b4c67a7e9acc4e8436e89406f4ecb6. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a5a889c9-d541-4a1a-9a1a-42f5e436597f.json and https://artists.proofprofile.net/proofs/artist/a5a889c9-d541-4a1a-9a1a-42f5e436597f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).