The Canadian firm is the latest of many North American companies to chase Bitcoin's hashrate with new machine purchases.
Public Citizen warned the U.S. Dept. of Energy that DMG Blockchain's bid to export electricity could set a dangerous precedent.
The group's goal is net-zero greenhouse gas emissions from crypto miners by 2040.
Crypto startup Knabu is launching a 30-day pilot today to put regulatory reporting on the blockchain.