Ricardo Óscar Cifuentes Lillo (born 12 September 1962, in San Javier de Loncomilla) is a Chilean professor and politician. He was undersecretary of Regional and Administrative Development of Chile fr
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 0xe528f8dbfd4c72c9fc98ec153dcd9b34586d0027f879e2db24ff9e646ddd95c9. Chain 2 (Bitcoin): anchored in block 954019 (2026-06-16T23:44:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/361862c4-d0db-466d-9e0c-c03321555e0b.json and https://artists.proofprofile.net/proofs/artist/361862c4-d0db-466d-9e0c-c03321555e0b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).