Term
Exchange
A platform for buying, selling, and trading cryptocurrencies. It can be centralized (CEX) or decentralized (DEX).
See also
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Block explorer
A web service that lets you browse blocks, transactions, and addresses on a blockchain in real time (for example, Etherscan for Ethereum).
Satoshi
The smallest unit of Bitcoin, equal to one hundred-millionth (0.00000001) of a BTC. Named after Bitcoin's creator.
Fiat
Traditional government-issued currency not backed by a physical commodity, such as the US dollar, euro, or Czech koruna — as opposed to cryptocurrency.
Genesis block
The very first block in a blockchain, from which the entire chain begins. Bitcoin's genesis block was created on January 3, 2009.