Future of bitcoin

A friend of mine told me he just put 10000 of his savings into bitcoin, on a website called coinbase. He claims that could eventually turn into 6 figures.. I have 2 questions. 1. Is that a reliable website to store his bitcoin? 2. Is there any chance he's right about the potential return on investment?

submitted by /u/cwdall3 to r/btc
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Quelle: bitcoin-en