For example, if transaction B depends on unconfirmed transaction A, then Bitcoin Core adds together the fees paid by both transactions and divides them by from the Youtu blog combined size of both transactions. Thus, a transaction commences only if there is spendable balance in the wallet. They claim to be able to increase your bitcoin balance by taking advantage of the flexibility problems inherent to the bitcoin transaction mechanism. It appears quite clear that a lot of hacking activities are taking place in Bitcoin industry that can ruin the whole deposits for traders. Facilitates illegal activities because of anonymity. With that being said, crypto has its concern over illegal activities like Money Laundering, Drug Trafficking etc. Governments around the world are weary of the fact that the growth of crypto might play into the hands of the criminals, and fugitives.