João Magalhães Hueb de Menezes (born 17 December 1996) is a Brazilian former professional tennis player. He has a career-high ATP singles ranking of world No. 172 achieved on 17 February 2020 and a ca
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 0x1d735f1f0ea0151af06b91e5566f05d7abc28909df8a70fccbe0035909e1d5a5. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b17c84e5-6f14-45a1-bf36-2b525c3932c5.json and https://artists.proofprofile.net/proofs/artist/b17c84e5-6f14-45a1-bf36-2b525c3932c5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).