Rehypothecation is when banks use their clients collateral as their own.
https://www.investopedia.com/news/how-commingling-and-rehypothecation-affect-bitcoin/
Ethmoji digits used in favor of normal regular digits. They're more visually stimulating and have proven their worth.
A combination of binary digits + 666.
A combination of "hola" and "amigo." A lazy greeting to a friend.