Tal Zilber () is an Israeli-born pianist and composer. He holds an M.M. from Rice University, a Performance Diploma from Indiana University, and a B.M. from the Rubin Israeli Music Academy. He has s
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 0xe4613d5e08910b6a49c1be0d79d0c1fefb90dfad140cfd0d2d49d509b96c83d7. 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/001972c1-5a3d-4c16-9fca-97daefd0d1ad.json and https://artists.proofprofile.net/proofs/artist/001972c1-5a3d-4c16-9fca-97daefd0d1ad.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).