Don't ask how it works. It's explained below. And don't ask if they are going to allow staking for other coins. I have no idea.
coinbase.com/staking
Coinbase sent out the email notifying everyone that staking was now live for Tezos (XTZ). This is a pretty big deal in IMHO because it gives you a way to earn, simply by holding a coin in your account.
This is the 15m chart. It shot up 75% within a few minutes, then strong market sellers came in (those who accumulated before the pump). Those MARKET SELL orders trigger immediately which drives the price back down as it eats up LIMIT BUY orders sitting on the order book waiting for match.
Then next candle started and it shot right back up as a second wave of FOMO buyers came in strong. Insane scalping opportunity if you were on it, the moment you read that email.
Tip. When a coin is this hot, don't use LIMIT orders. Instead, use MARKET orders to ensure you get in and out of the market fast. MARKET orders get filled instantly, with some higher fees, but worth it if you're scalping for 30-50% profit in minutes.