Berlin Fork
Ethereum Foundation Says Berlin Hard Fork Addressed 'Clear and Present' Threat
The vulnerability was first discovered in late 2019.

Ether Breaks $2,500 for the First Time in Wake of Berlin Fork
The hype around ether is also reflected in the derivatives market.

Market Wrap: Bitcoin Stuck Around $63K as COIN Hype Loses Steam
Also, ether continued to move higher after the Berlin Fork.

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