1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74503824b8c8151dab5f897b78d446004aea6ce209c6dd545da38a16924b232. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/89830336-86c2-44a4-bc23-c340f816568b.json and https://artists.proofprofile.net/proofs/artist/89830336-86c2-44a4-bc23-c340f816568b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Valentin De La Sierra / La Mesa Del Guayabo
Los Perez / Chema Arroyo / Mujer Paseada / Por Una Mujer Casada
El Pañuelo / El Huaco / La Tortolita / La Rabia
Julio Reyes / Tomando Licores / Zirandaro