Answers.comÂ® is making the world better one answer at a time. Construction nails are usually made of steel. They can also be made of aluminum, copper, brass, nickel, even stainless steel.
25,949 users here now. Bitcoin is the currency of the Internet: a distributed, worldwide, decentralized digital money. Unlike traditional currencies such as dollars, bitcoins are issued and managed without any central authority whatsoever: there is no government, company, or bank in charge of Bitcoin.
Bitcoin is the first implementation of a concept called cryptocurrency, which was first described in 1998 by Wei Dai on the cypherpunks mailing list, suggesting the idea of a new form of money that uses cryptography to control its creation and transactions, rather than a central authority.