exchanges to one of many bitcoin wallets, ranging from online options to cold storage. Select "Custom Time" to create a permanent link to a specific date. To learn more click here. Blockchains are under a decentralized control, whereas a centralized database creates a dependent relationship between users and administrators. The use and trade of Bitcoin is legal in the majority of countries in the world, however, because it is a deregulated marketplace, governments are concerned about its potential threat as a tool for money laundering.