Derek King (born February 11, 1967) is a Canadian former professional ice hockey left winger and current head coach for the Hershey Bears of the American Hockey League. He most recently served as an
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 0xfa8f71d97fe365b8a8f6120814ed8d91d8e3106f88f709362f104bab9ca7ee3a. Chain 2 (Bitcoin): anchored in block 954038 (2026-06-17T02:57:22Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3db2b2b6-62c1-496b-a18e-a2f9130a77ad.json and https://artists.proofprofile.net/proofs/artist/3db2b2b6-62c1-496b-a18e-a2f9130a77ad.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).