BTC (or Bitcoin) is the native coin of the Bitcoin blockchain. Bitcoin is the first cryptocurrency ever created and is now the most traded and well-known. It was first launched in January 2009 by a computer programmer or a group of programmers under the pseudonym Satoshi Nakamoto, whose actual identity has never been verified. It can be stored securely in your xPortal App. Its use cases include:
paying for transactions on the Bitcoin blockchain
investment and store of value
payments through select payment processors
Learn more about it here: https://bitcoin.org/en/bitcoin-for-individuals