Luis César Alvarado Martínez (January 15, 1949 – March 20, 2001) was a Puerto Rican infielder in Major League Baseball (MLB). From 1968 through 1977, he played for the Boston Red Sox, Chicago White So
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 0x295273787a1016060dd46e02a44826e37062125964aadf59e6c979807133a309. 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/79efdcd9-8f51-4df8-be89-88fa9eadfbd5.json and https://artists.proofprofile.net/proofs/artist/79efdcd9-8f51-4df8-be89-88fa9eadfbd5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).