Leo Pinto (11 April 1914 – 10 August 2010) was an Indian field hockey player who played as a goalkeeper, who won the gold medal with the India national team at the 1948 Summer Olympics in London. Duri
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 0xfe16e36a4b03b158e8af8567f5573ce3bc50c012571fe519feec5fdb0466cc5d. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d5e0003c-997f-4665-b0f8-22ad82c93737.json and https://artists.proofprofile.net/proofs/artist/d5e0003c-997f-4665-b0f8-22ad82c93737.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).