i am still hesitant to call this a "bull run" just because we saw a big and sudden rise. i say it is mostly because of the fact that bitcoin was manipulated and dumped hard instead of going down like a normal market and being lower by force means it will jump back up like this.
if price continues to rise and goes above $8000 then that can be a good signal for the start of a bull market, otherwise don't jump to conclusions.
$30b just came into the market suddenly.
stop using and reporting market capitalization when you are talking about cryptocurrencies. it is completely meaningless like what you said here. no $30b ever came into the market! what happened was that bitcoin went up and since every altcoin has a alt/btc price and during a sudden rise nobody is capable of selling alts that fast the prices of altcoins virtually went up in USD too.
for example an altcoin worth 0.01
BTC was worth $68 then suddenly while still at 0.01
BTC it was worth $80 that doesn't mean that altcoin went up!!! it means that altcoin stayed the same and bitcoin went up. in fact many of them even got dumped and went down to 0.009
BTC for example but still showed fake rise!