BT or Bt may refer to: Arts, media and entertainment The arts BT (musician) (born Brian Transeau), American electronic musician BT (album), a 2000 album by Buck-Tick Burton Taylor Studio or The 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4275e58263d9f9b87db673e0a9c33037ca4b3e1ca5a9c9ed620d65070a268b. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a1b44e71-9517-4a1a-b766-ecda606931ca.json and https://artists.proofprofile.net/proofs/artist/a1b44e71-9517-4a1a-b766-ecda606931ca.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).