Here is one that says I should scan to claim. I do not even understand what I'm supposed to scan there.
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Here's another one. Are they really fake?
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These are usually a scam as mentioned above. It's to attract you towards their site or whatever, to link your wallet and then you get drained. I myself have dozens, if not hundreds of those in my wallet while I pretty much never link my wallet or use it anywhere, aside from sending to exchanges, or other individuals.