Leonardo Rios Marques is a Brazilian singer songwriter, music producer, sound engineer and owner of the Ilha do Corvo studios, and is one of the founders of the La Femme Qui Roule. record label. He st
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 0x234dd2c0de7b6bd31a0b92b871a50bdbe8237d7a8a0b502c6424ca185ba2d8c0. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d33b18d8-41fb-4346-9fef-a8edd338f039.json and https://artists.proofprofile.net/proofs/artist/d33b18d8-41fb-4346-9fef-a8edd338f039.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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