Martin Glenn Barber (February 2, 1935 – March 28, 2008) was an American country music and rockabilly singer-songwriter. He recorded for Hickory Records in the 1970s, releasing three albums and chartin
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 0x9d1f45a7d823de22936b093679a19f811fac88c45a8ce7da7379e542a0d45ed7. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e81ab7a8-afbb-4b4d-a73d-add17eff2085.json and https://artists.proofprofile.net/proofs/artist/e81ab7a8-afbb-4b4d-a73d-add17eff2085.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).