James Stewart Bain (19 December 1947 – 23 January 2016) was a Scottish musician, best known for playing bass guitar in the bands Rainbow and Dio. He also worked with Kate Bush and Thin Lizzy frontman
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 0x76d94f13052d25065ecbb02b4c6d6106fea65795c3220788508ef7333dd40d3d. Chain 2 (Bitcoin): anchored in block 954553 (2026-06-20T11:51:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/abd926fa-496e-42bf-8b89-56ba519280ab.json and https://artists.proofprofile.net/proofs/artist/abd926fa-496e-42bf-8b89-56ba519280ab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).