Bitcoin was originally lauded for its fool-proof digital currency solution, but so far, there are few places to spend Bitcoin. The most liquid of all currencies is surprisingly illiquid. Moreover, the recent arrival of thousands of “altcoins”—alternative coins—devalues the whole concept. Ethereum might pose a challenge to bitcoin in terms of smart contracts. While ether has potential it's still worth less than 10% of one Bitcoin in dollars today.
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