Bitcoin and other currencies are nowadays frequently discussed again. The debate has emerged mainly because of the strong uptrend in the Bitcoin price. In this blog post, we will leave the price patters to others. We will instead present interesting novel research connected to the well known theoretical model in the fiat currencies – the Covered Interest Rate Parity (CIP). If the CIP holds, interest rates and both the spot and forward rates of two countries should be in equilibrium. Novel research of Franz and Valentin (2020) examines the CIP in BTC/USD pair. The CIP theory states that there should be no arbitrage opportunities, but how the CIP holds in such a volatile market, where individual investors/traders seem to dominate? According to research, there were significant CIP deviations in the past, but it changed with the launch of BTC/USD futures in CME and high-frequency traders’ market entry. Moreover, the second event was much more successful in the reduction of deviations.