Research is on The Bitcoin Cycles. We will look at the ups and downs, consider their dependence on the BTC Halving events and the number of active wallets. To begin with, let's look at the information about all the BTC Halving events that have passed, adding new data to them.
It is also important that Liquidity (Y•Z) largely consists of transactions that are not aimed at making a profit, in other words, liquidity is also used to support the exchange of assets for goods and vice versa (in our case, Bitcoin is also a payment tool).
Recall that the block difficulty = BTC value.