David Rokeach is an American drummer. Career He has been working primarily in the San Francisco and Los Angeles areas for more than 30 years. Rokeach toured nationally and internationally with Ray
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa542c67340974885e6c330478766184da6d667db6d326f9c5c906ec858ee9e8c. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c3a8810a-1e34-4c2b-9f98-dae02e5cf2f3.json and https://artists.proofprofile.net/proofs/artist/c3a8810a-1e34-4c2b-9f98-dae02e5cf2f3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).