Matheus Philipe Pereira Leal (born 7 January 1995), known as Matheus Leal, is a Brazilian footballer who plays as a left-back for Juventus-SP. Career Born in Três Marias, Minas Gerais, Matheus Leal p
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 0x51eddad381ca02ed777fbd9e2374707bd8d6f57a3a238b00bbcbb1e9e8f1800c. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8970e137-37fe-4f96-a616-5081314b3f6a.json and https://artists.proofprofile.net/proofs/artist/8970e137-37fe-4f96-a616-5081314b3f6a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).