Billy P. Kametz (; March 22, 1987 – June 9, 2022) was an American voice and stage actor. He was best known for his work dubbing anime and video games. Kametz began his voice acting career in 2016. He
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 0x158e0408f64d71a2e137c860b48809005fbed0b4d7e19231a3a781d47544c02d. Chain 2 (Bitcoin): anchored in block 953877 (2026-06-16T02:39:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/019c5830-6e47-495c-956d-ea6366d8a669.json and https://artists.proofprofile.net/proofs/artist/019c5830-6e47-495c-956d-ea6366d8a669.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).