Antwain is a given name that is an alternate form of Antoine. Notable people known by that name include the following: Given name Antwain Barbour (born 1982), American basketball player Antwain Brit
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 0xe4f55f410eccbd1864948feb2f0d13ef75d92366a728d6bbbbe7f4354c8997eb. Chain 2 (Bitcoin): anchored in block 954017 (2026-06-16T23:38:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3681b60a-0d77-47bb-8965-29a10505dd8f.json and https://artists.proofprofile.net/proofs/artist/3681b60a-0d77-47bb-8965-29a10505dd8f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).