Lucas Queiroz Canteiro (born 3 October 2000), known as Luquinha, is a Brazilian professional footballer who plays as a midfielder for Botafogo-SP. Professional career On 30 June 2019, Luquinha joined
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 0x73563574fd8fe6981f227cb9124ac531f27537878428caa6e49720b6c3008e05. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fc8e453a-947c-4e89-82fb-69db29da55b5.json and https://artists.proofprofile.net/proofs/artist/fc8e453a-947c-4e89-82fb-69db29da55b5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).