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Nice one.

Random key: balance is zero.

Real key: balance is (now) zero

Thanks for this, I didn't know that people create weak BTC keys for fun. I guess some are also used as bot honeypots?

Back in the day people used to SHA256 a passphrase and create a Bitcoin private key from it.

Definitely! Takes a bit of time to go through all of them, though.

I think people don’t get what I mean. A key with just 0s and a 1 at the last digit is very weak. Yet someone created a wallet with it for fun.

I'm sure there are people who will search for their actual private key, potentially leaking it.