Viviane Filellini Costa (born June 13, 1980 in São Paulo) is a female water polo player from Brazil, who won the bronze medal with the Brazil women's national water polo team at the 2003 Pan American
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 0x2ab2ffea52de463cb2bddae99b2b303a2da95525d6fb2d3f31c14a148590e95c. 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/e143a17a-5fba-413d-9460-4b99d41ddc8b.json and https://artists.proofprofile.net/proofs/artist/e143a17a-5fba-413d-9460-4b99d41ddc8b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).