Kenneth Slowik (born 1954) is an American cellist, viol player, and conductor. Curator of Musical Instrument Collection at the National Museum of American History and Artistic Director of the Smithso
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 0xa90ce429d352a9155c958c00f91ea0a6bc0162946bc2ecdf4db38d1130da327c. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b2bf1923-8c88-425a-bf99-b3fb608a139e.json and https://artists.proofprofile.net/proofs/artist/b2bf1923-8c88-425a-bf99-b3fb608a139e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).