Cryptocurrency mining often requires massive amounts of electricity, especially forproof-of-work chainslike Bitcoin.
That power sometimes comes from fossil fuels, which the state of New York wants to limit.
Newer blockchains use a more efficient proof-of-stake model, but not Bitcoin and some other chains.
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The Ethereum blockchainmigrated to proof-of-stakeearlier this year.
Theextensive useoffossil fuelsis one of the most significant problems with cryptocurrency.
