Ricardo Sanchez, also written Sánchez (; born September 9, 1953), is a former lieutenant general in the United States Army. Early life and education Sánchez was born into a Mexican American family in
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 0x33c8fca52b25358e745660d1f45a3f2f2a35ad18b109f08e3cdfa35b1dce7218. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/54b1ee71-92e6-427c-ab90-7cfa6b1ba7cc.json and https://artists.proofprofile.net/proofs/artist/54b1ee71-92e6-427c-ab90-7cfa6b1ba7cc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).