Samuel Andrés Vargas Ariza (born 12 April 1989) is a Canadian-Colombian professional boxer. Professional career Vargas turned professional in 2010 at the age of 20, scoring a technical knockout (TKO)
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 0xb43f2642c9f626eac7441c7b2c90ac5d1d1b62817cf8d18e4abbf39566e828be. 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/797252e3-2fb2-4fe0-99a8-4ef29f56b979.json and https://artists.proofprofile.net/proofs/artist/797252e3-2fb2-4fe0-99a8-4ef29f56b979.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).