Paul Frank Martinez (6 October 1947 – 10 February 2024) was an English session musician and songwriter. Born in Leicester, England, Martinez was best known for his work with Robert Plant, Cat Stevens
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 0x5e6d2a5e215800af6f0c2855776a37087dc1837a0cfc24996f33a2ad6b7cd8a3. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b1a4b012-6a24-4e6d-b805-f0f3f0ea69bb.json and https://artists.proofprofile.net/proofs/artist/b1a4b012-6a24-4e6d-b805-f0f3f0ea69bb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).