Luis Uberlindo Espinoza Villalobos (10 August 1940–2 December 1973) was a Chilean politician and accountant, affiliated with the Socialist Party of Chile (RS). He was a founder of the PS in Los Lagos
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 0x1aeb47f78f4692b3967b6e5b564a9cb562073ce2c9b517753e46c67af3720550. Chain 2 (Bitcoin): anchored in block 953717 (2026-06-15T01:05:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/874abf9e-d269-4875-a543-c143b2f05c42.json and https://artists.proofprofile.net/proofs/artist/874abf9e-d269-4875-a543-c143b2f05c42.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).