Roger Andrés Gutiérrez Cuevas (born April 11, 1995) is a Venezuelan professional boxer who has held the WBA super featherweight title from 2021 to 2022. Professional career Early career Gutiérrez mad
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 0xa6f4e971b577eec6fe4f46b75f909134ef6c78ed7b4a74eff0d4bb15c638b1eb. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e51c664a-dbcb-4277-a2ee-ce78115da691.json and https://artists.proofprofile.net/proofs/artist/e51c664a-dbcb-4277-a2ee-ce78115da691.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).