David Kahne is an American record producer, musician, composer, and former record company executive. Professional career Kahne started his musical career as a working musician and soon became Dire
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 0xb3ffa929ef5074a2162d5e650f5e39f27d51e7ab362eea756d03fe48b647b249. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/faf72399-7a10-4ffb-9232-d7b711d047a4.json and https://artists.proofprofile.net/proofs/artist/faf72399-7a10-4ffb-9232-d7b711d047a4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).