what are bitcoin and blockchain?

Bitcoin is a virtual currency and payment system, which uses a software program to record and pay for things without a thirdparty broker, like a bank or government. Users install a Bitcoin wallet app on their phone or computer, and buy the virtual currency from a Bitcoin exchange. Its promoters say Bitcoin is ideal for people in developing countries, who might have mobile phones but not bank accounts. Blockchain simply refers to a bookkeeping method that chains together entries so that they are very difficult to modify later. Among the world’s leading companies now using Bitcoin and Blockchain technology are IBM, Expedia, Maersk and Dell.

For more information, see bitcoin.com.