Zuza may refer to: Joseph Mukasa Zuza (1955–2015), Malawian Roman Catholic bishop Jurica Žuža (born 1978), Croatian basketball player and coach Zuza (footballer, born 1911), Luís Stevan de Siqueira N
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 0xeda5aed446aca20a23152a39d48e1d253f6643f04b720f47db9d7c48a4b15ba4. Chain 2 (Bitcoin): anchored in block 953687 (2026-06-14T20:19:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/67556835-8fa7-43f1-80f9-1c8e310b16cd.json and https://artists.proofprofile.net/proofs/artist/67556835-8fa7-43f1-80f9-1c8e310b16cd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).