Lucas Caires Ferreira (born 29 June 1992) is a Brazilian footballer who plays as a left back. Career Born in São Paulo, Caires began his career with CA Diadema, appearing with the club in Campeonato
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 0xf3ce1e2197b8c4150f613bd805861e8c74c6bc73ef28fc55c835b6489a24c318. 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/1038d6b2-b772-48de-ac66-5ffda37fdfe1.json and https://artists.proofprofile.net/proofs/artist/1038d6b2-b772-48de-ac66-5ffda37fdfe1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).