It`s the first time BTC volume is rising MORE than of the altcoins.
bitcoin volume has always been higher than altcoins!
After the initial pump at 17th
what pump? a rise is not a pump!
when all coins jumped up, from 19th untill now the capitalisation of bitcoin is rising (and the price as well)
market cap is price * supply and both are rising. basic math says when one side of the equation is multiplication of 2 numbers that both are rising the result also goes up!
when the marketcap and the price of the alts is going DOWN. It is very unusual: we have ever enlargement of the alt`s marketcap when the total marketcap is rising.
wrong.
usually when bitcoin is rising, altcoins drop.
again: market cap = price * supply when price is going down their market cap goes down and since there are 1700+ altcoins most of which have billions of coins the result drops harder.
now on top of that we have the altcoin bubbles that are still with us thanks to last year's market wide altcoin pump which means they still need to get dumped harder to reach bottom.
mass selling their altcoins for BTC after 18th which is the reason to keep BTC price high for now.
when you sell your altcoin for bitcoin, it does NOT affect price of bitcoin!
for example you have 100,000 XRP and go on Binance and sell it for bitcoin. you get 6.13
BTC. now if anything you now own bitcoin which you may sell for USD and crash bitcoin price. in other words the exact opposite of what you said is true meaning when someone sells his altcoins for bitcoin it is possible that bitcoin price is pulled down because they may sell some of the bitcoin they get for USD and crash the market.