João Nuno Duarte Viana (born 13 January 1992) is a Portuguese professional footballer who plays for Swiss club FC Stade Nyonnais as a right-back. Career Born in Maia, Porto District, Viana played for
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 0x6975c48c83227680f2b9d6eef34012a59fd0267523c0e482ff8d6879dc1c93c6. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e9ceebb1-278f-46dd-8bcf-832235530f02.json and https://artists.proofprofile.net/proofs/artist/e9ceebb1-278f-46dd-8bcf-832235530f02.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Trilha Sonora Original de Sempre Pensará em Ir - Caminho do Mãe