Roby Duke (December 6, 1956 – December 26, 2007) was a contemporary Christian musician and songwriter from Greenwood, Mississippi. He was noted for his blues-inflected vocal style and rhythmic "thumpi
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 0x092386ad3ff4a206c37f93f148d89473a9548f6c3ee49c9b80184116521e33ba. Chain 2 (Bitcoin): anchored in block 953846 (2026-06-15T22:48:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/012b455b-0e85-496d-a811-b235b419a387.json and https://artists.proofprofile.net/proofs/artist/012b455b-0e85-496d-a811-b235b419a387.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).