So first of all, you'll never use the wrong chain unless you explicitly set up ETH PoW, and that won't be by accident.
Second, your pre-merge NFTs will exist independently on both chains post-merge. You can't sell the PoS NFT for PoW ETH, and vice versa.
99% of users don't understand the behind the scenes when interacting with Ethereum, and that leaves them vulnerable to attack.
This is the master thread for newbies and journeymen alike - everything you need to know to avoid getting scammed, and minimize damage when you do.
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