Felipe Pérez Urrea (1 January 1967 – 17 October 1996), most known as Pipe Pérez, was a Colombian professional footballer who played as a forward. Career Pérez Urrea integrated the Antioquia soccer te
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 0x9d6567298f3d222d3093a7f46af360ebec35b2e93ce070db94b108f5f52645cc. Chain 2 (Bitcoin): anchored in block 953947 (2026-06-16T13:14:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/220ed8d0-de40-428d-92aa-b338ba4f44c6.json and https://artists.proofprofile.net/proofs/artist/220ed8d0-de40-428d-92aa-b338ba4f44c6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).