There's one cryptocurrency that's reached a significant milestone this month. I'm talking about Ethereum (CRYPTO: ETH). The world's second-biggest cryptocurrency completed The Merge -- a shift to a new method of validating transactions on its blockchain.

At the same time, Ethereum's performance offers us a buying opportunity. It's slipped about 20% since this operation. Those are two reasons to buy Ethereum in September. And here's a third: There's even more to come for Ethereum. Let's take a closer look.

First, a bit about The Merge. This involved switching from the proof-of-work validation method to proof of stake. Proof of work relies on complex computations to verify a transaction. As a result, Ethereum used about as much energy annually as the Netherlands. 

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Source Fool.com