This is a cryptographical hash that produces public wallet addresses for transacting cryptocurrencies. Although it comes with your private key, you can share it with little to no security concerns, as it’s almost impossible to reverse the public key to get your private key.
BTD / BTFD
Acronyms for “buy the dip” and “but the fxxxking dip,” respectively. These terms are used interchangeably in crypto to tell people to buy a cryptocurrency