Los de Abajo ("The Ones From Below") is the official barra brava of Universidad de Chile. They are one of the biggest groups of supporters in Chile. It is the team that takes the most people to the st
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 0x66bf242b49426694094dbac1fc6b94135693f988bc07e5a906bbc37461f2eb93. Chain 2 (Bitcoin): anchored in block 954035 (2026-06-17T02:39:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3ae0faf5-d1f3-4014-bd8d-0575c2c9c8a8.json and https://artists.proofprofile.net/proofs/artist/3ae0faf5-d1f3-4014-bd8d-0575c2c9c8a8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).