Euny Hong is the former supervising editor at Investopedia.com. She is also the author of two critically-acclaimed, published books. Dr. JeFreda R. Brown is a financial consultant, Certified Financial ...

Some people change the world with technology. Some people use technology to change the world. And some people find ways to mine Bitcoin on really, really, really old computers. Ancient Computer ...

For years, the conversation around quantum computing and cryptocurrency has been dominated by a single, breathless question: Will a quantum breakthrough kill Bitcoin? The fear is simple enough.

Blockchain is the method behind the bitcoin madness. It's a global accounting ledger that records all bitcoin transactions.