The Griffin Brothers were an American rhythm and blues band from Norfolk, Virginia, sometimes credited on record as the Griffin Brothers Orchestra. They made successful recordings with singer Margie
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 0xdc53c7707b6c8043f28d02316d74ab43819acfbe5e8c3f76310ca1f9df068462. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1ccae5f5-a605-466b-a56b-bea7efd0c2e9.json and https://artists.proofprofile.net/proofs/artist/1ccae5f5-a605-466b-a56b-bea7efd0c2e9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).