Bitcoin median fees declined to levels not seen in 4 years as the transactions of the king of cryptocurrencies hit the 9-million mark last month, a level not seen since December 2017, according to a research published by crypto and bitcoin research firm Diar. As the note says, "total monthly Bitcoins moved on-chain standing at higher levels than seen throughout most of 2018," with over 4 million bitcoins moved in January 2019. "But the Median transaction value in Bitcoins has dwindled to new lows, as has the equivalent total USD Volume which last month fell below May 2017 levels." Last week, Cryptimi reported that according to another Diar research the trading volume in crypto exchanges declined to levels not seen since 2017. "Partly accounting for a lack of volatility so far this year, exchanges could be set to enter a new plateau after coming off a record breaking year."So, while transactions count is at 1-year highs, trading volume in crypto exchanges are at lows since 2017, Bitcoin fees are dropping.