Emil José Martínez Cruz (; (born 17 September 1982) is a Honduran former professional footballer who played as a midfielder. Club career Martínez made his professional debut for Marathón and played a
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 0x0a2c5ad19d2c06f11132b7e49d1d51254c5a44f79ee4472c924c9694df311950. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/80d00bee-272d-4834-8935-e5e5ab8cecf7.json and https://artists.proofprofile.net/proofs/artist/80d00bee-272d-4834-8935-e5e5ab8cecf7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).