Bitcoin is a worldwide cryptocurrency and digital payment system called the first decentralized digital currency, as the system works without a central repository or single administrator.

It was invented by an unknown person or group of people under the name Satoshi Nakamoto and released as open-source software in 2009. The system is peer-to-peer, and transactions take place between users directly, without an intermediary. These transactions are verified by network nodes and recorded in a public distributed ledger called a blockchain.

Bitcoins are created as a reward for a process known as mining. They can be exchanged for other currencies, products, and services. Bitcoin can also be held as an investment. According to research produced by Cambridge University in 2017, there are 2.9 to 5.8 million unique users using a cryptocurrency wallet, most of them using bitcoin.

Find out more at www.terracoin.info.

Litecoin is a peer-to-peer cryptocurrency and open source software project released under the MIT/X11 license. Creation and transfer of coins is based on an open source cryptographic protocol and is not managed by any central authority. While inspired by, and in most regards technically nearly identical to Bitcoin, Litecoin has some technical differences compared to Bitcoin and other major cryptocurrencies. Litecoin also has almost zero payment cost and facilitates payments approximately four times faster than Bitcoin.

Find out more at novacoin.org.

Find out more at www.namecoin.org.

Find out more at www.peercoin.net.

Find out more at feathercoin.com.

Find out more at freico.in.

Find out more at bitbar.co.

Find out more at digitalcoin.co.