Antônio Lira (13 November 1909 – 23 August 1963) was a Brazilian athlete. He competed in the men's shot put at the 1932 Summer Olympics and the 1936 Summer Olympics. References External links Cat
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa536d238aae12a2ceaf985683fabec3ef7f9accb38fd2c0d43d162c8af0136d9. 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/82fbe2c4-0266-473a-a5ee-2f0744ba6672.json and https://artists.proofprofile.net/proofs/artist/82fbe2c4-0266-473a-a5ee-2f0744ba6672.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).