El Chema is an American crime television series premiered on Telemundo on December 6, 2016, and concluded on April 3, 2017. The series is produced by Argos Comunicación and Telemundo Studios for Telem
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd06cfd1b3a990fbc8a00d73fa88d8cad826ffc78f2696f799632283b3231daf. Chain 2 (Bitcoin): anchored in block 953746 (2026-06-15T05:25:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a5658520-fbd6-4e49-8e66-ab73996a82b7.json and https://artists.proofprofile.net/proofs/artist/a5658520-fbd6-4e49-8e66-ab73996a82b7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).