Martin or Marty Cooper may refer to: Martin Cooper (musicologist) (1910–1986), English music critic and author Martin Cooper (inventor) (born 1928), designer of the first mobile phone Marty Cooper (m
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 0x90bbe02745bdaf1e739c3b77f7949206c8f6f7ebcb19a8d568363ecb6314d97c. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6646771d-8faa-4734-8f1a-8fe250b6fbc2.json and https://artists.proofprofile.net/proofs/artist/6646771d-8faa-4734-8f1a-8fe250b6fbc2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
C.H.U.D. (Original Motion Picture Soundtrack)