George Joseph Hrab is an American drummer, guitarist, composer and podcaster known for performing rock, funk and jazz and for exploring atheist, skeptic and science themes in his work. He has release
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 0x2864abb670ac9f3d01e278792a81537ed23da64f4deea5b72a85aa4df30b4732. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/df082ae6-dc66-4b9e-bd8c-6e509c95d878.json and https://artists.proofprofile.net/proofs/artist/df082ae6-dc66-4b9e-bd8c-6e509c95d878.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.