ChangeTip

ChangeTip has marketed itself as a "money layer for social media," meaning that the company allows users to send each other virtual tips for things like enjoyable YouTube videos, insightful reddit comments and now – great songs. On Wednesday, the company announced that it would use SoundCloud...

While the excitement seen at the beginning of 2014 over bitcoin has fizzled out, investors are becoming more and more interested in the technology behind the cryptocurrency Blockchain. Blockchain is an infinite ledger that keeps track of all transactions for bitcoin, and enthusiasts say it won...

Startup Circle raised attention this spring when it launched into private beta. Circle's consumer offering is similar to Coinbase product, but offers instant buys, insurance and improved customer service. High Expectations Bitcoin products enabling users to acquire bitcoins face fraud...

Service can grow fast in today’s world. WhatsApp grew from zero users to 500 million in five years before being acquired by Facebook. Bitcoin, like WhatsApp, was created in 2009, and while bitcoin has experienced tremendous growth, it is 100 times smaller than WhatsApp. The Big...

Last week venture capitalists, entrepreneurs, the press and people curious about bitcoin attended Coin Congress USA in San Francisco. David Smith was there as a mass-adoption panelist and captured the event in pictures.

Many people are still trying to understand bitcoin. The underlying technology -- a person-to-person digital exchange -- appears to be moving forward at a breakneck pace. And this year, unprecedented business models are being built on top of bitcoin-like technologies. Many investors have a hard...