Hugh Marsh (born June 5, 1955) is a violinist from Toronto, known for his electric violin sound. Marsh was nominated for a 2007 Juno Award in the best contemporary jazz album category. Early days Mar
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 0xb681a455f4639676ebfee19ce79e27127ea8c88e60cad8318496899686bc7bf1. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2d7d0560-c6db-43a6-84fa-672de8ce8816.json and https://artists.proofprofile.net/proofs/artist/2d7d0560-c6db-43a6-84fa-672de8ce8816.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).