“…150 The business model of exchanges consists in the maker-taker fee model which encourages market liquidity by rewarding the makers, whose orders exist on the order book prior to the trade, with a fee discount. 151 By contrast, the takers, whose orders match the makers' ones, pay a higher fee for removing the liquidity created by makers. 152 Regulatory concerns, as well as the closing of technological and financial channels by private institutions, 153 are commonly presented as causes of the cryptocurrency downturn.…”