"Empire State Human" is a song by the British synth-pop group The Human League. The song was written by Philip Oakey, Martyn Ware and Ian Craig Marsh. It was co-produced by The Human League and Colin
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 0xc74eb3f0664c5e0a138786cc8114354ec59694b2a76423d64a9146548c2ba0ab. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/889e6b7b-db17-480e-aa2b-1bf81d2feca9.json and https://artists.proofprofile.net/proofs/artist/889e6b7b-db17-480e-aa2b-1bf81d2feca9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).