Bitcoin For The Wary

Bitcoin was the first of the cryptocurrencies, which now number around 1,500. They were labelled "crypto" because Bitcoin, at first, was deemed hidden and secret. But since each bitcoin consists of both a public identifier number and a private key, the different bitcoins and their transfers are now being tracked by investors and the authorities. A new company, Chainalysis, of New York, specializes in just such tracking. Today, it seems that most of the secret transfers are done by simply...