Trew is the surname of: People Abdias Trew (1597–1669), German mathematician Antony Trew (1906–1996), South African writer and business man Arisa Trew (born 2010), Australian Olympic champion skat
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 0x4bd8bd12213c84e0d4b7ff4bcabc83ebf1908bfb55f62ebc1d40228ef39d9306. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f3e229ab-8651-40ac-842b-b3e516016690.json and https://artists.proofprofile.net/proofs/artist/f3e229ab-8651-40ac-842b-b3e516016690.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).