Eddie Hardin (19 February 1949 – 22 July 2015) was an English rock pianist and singer-songwriter. Born Edward Harding, he was best known for his associations with the Spencer Davis Group, Axis Point,
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 0x70423f88edcb5ec676bf1bec333eaa7525f7adc8bbdbe18206239db504bfbb7c. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fc971f58-0349-4f6c-b798-78ebebdc8d7d.json and https://artists.proofprofile.net/proofs/artist/fc971f58-0349-4f6c-b798-78ebebdc8d7d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).