Arturo Mercado Chacón (born December 7, 1940) is a Mexican voice actor who has dubbed many movie and television characters to Spanish for the Latin American movie and television market since 1963. He
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 0xeda2f520fb1fe7349ec20b029a38e7d05a18c73ed10d4c09471d31d437afaf5d. 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/5fd25fa1-f495-4748-ac9a-a2c25a7ba027.json and https://artists.proofprofile.net/proofs/artist/5fd25fa1-f495-4748-ac9a-a2c25a7ba027.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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