Kai Bird (born September 2, 1951) is an American author and columnist, best known for his works on the atomic bombings of Hiroshima and Nagasaki, United States-Middle East political relations, and his
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 0x73a1b38ac56abf8b3516d77b0e6b1be12c15201ce16c80d3d626374dc4711d72. Chain 2 (Bitcoin): anchored in block 953743 (2026-06-15T04:52:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a10f9db6-8ed4-4ee4-ae9e-4de1a829db9e.json and https://artists.proofprofile.net/proofs/artist/a10f9db6-8ed4-4ee4-ae9e-4de1a829db9e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).