Juan Martín López (born 27 May 1985) is an Argentine field hockey player for Banco Provincia. At the 2012 Summer Olympics, he competed for the national team in the men's tournament. Juan Martín has wo
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 0x64601a603418a624c8c09c7a68212f0f700d982b9a5610ca5e67b59172d477a0. 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/8ddebbec-8bf3-4379-983b-cff49e6a9db0.json and https://artists.proofprofile.net/proofs/artist/8ddebbec-8bf3-4379-983b-cff49e6a9db0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).