Hugo Andrés Alarcón Abarzúa (11 January 1993 – 11 January 2019) was a Chilean footballer who played as a striker for football club Deportes Iberia. Club career Alarcón made his debut at Universidad
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 0xda9692bf6cdeba10e05cecc6a0a96e21add986f79b1eee4e3c32f86380b9e3cb. Chain 2 (Bitcoin): anchored in block 953936 (2026-06-16T11:24:55Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/205cba64-8a38-4a15-940b-e9f0abe8ab8a.json and https://artists.proofprofile.net/proofs/artist/205cba64-8a38-4a15-940b-e9f0abe8ab8a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).