(Courtesy Mike Venuto via AP)CHARLOTTE, N.C. – The digital currency Bitcoin rocketed to a record high last week above $40,000 a coin. He spoke to The Associated Press about Bitcoin's recent rise and what's different this time for the currency:Q: Tell us a little bit about the fund. We invest in blockchain companies, miners, and other companies in the space. We hold a small amount of Bitcoin and other currencies, but mostly get our exposure through the companies we own. It's still a decentralized digital currency using the blockchain created years ago.