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I heard somewhere that everything besides Bitcoin are altcoins

uhh. what? Anything that isn't bitcoin is an altcoin, whether or not how good or bad the altcoin is. We're talking facts here.

"NEM isn't an altcoin" Uhh, you're gonna have to qualify that statement.

I'm generous and move beyond BTC to include the top 5 or so, but beyond that you'd be in altcoin territory.

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