Oza or OZA may refer to: Title Ōza (shogi), a title in shogi Ōza (go), a title in Go People Ghanshyam Oza (1911–2002), Indian politician Goverdhan Lal Oza (1924–?), Indian judge Kaajal Oza Vaidya (b
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 0xdd065d474770d67ea3f61001eacf5098a27b46a8268c6870cb29a3b40b837829. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/487aba0b-9f1d-44e7-80f6-08dc010ccc45.json and https://artists.proofprofile.net/proofs/artist/487aba0b-9f1d-44e7-80f6-08dc010ccc45.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).