Greenpeace called for the Proof-of-Work blockchain to be abandoned. Greenpeace’s “Change the Code, Not the Climate” initiative urges exchanges, miners and billionaires to implement a “basic code change” that would move Bitcoin’s blockchain to Proof-of-Stake. By: Connor Sephton A controversial campaign that calls for Bitcoin to abandon its Proof-of-Work consensus mechanism — and the people behind it — have been …