As an investment The Winklevoss twins have purchased bitcoin. The bitcoin blockchain is a public ledger that records bitcoin transactions.
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Archived from the original on Kearns, Jeff (4 December 2013). Archived from the original on Retrieved parkes, Matthew. Retrieved 16 February 2015. "The Declaration geld gewinnbringend investieren Of Bitcoin's Independence". Retrieved Lee, Timothy. Retrieved "What is Bitcoin?". "The Crypto-Currency: Bitcoin and its mysterious inventor".