At the time, when BTC fee reached fairly low level (around $0.5), many transcactions with 0.1BTC ($ 661) fee filled the network and caused a lot of unwanted situations, such as fee increase and transactions' queue. This is reported by Cryptovest.
Individuals from the crypto community blamed the Bithumb exchange hack. What is even more surprising in these transactions is that they are used to transfer relatively small amounts. The absolute majority of transactions carry about 0,3 BTC ($ 2,000), and after paying the commission to the final amount is 0.2 BTC ($ 1,330). It is worth noting that some of the transactions contain amounts ranging from 0.4 BTC to 2 BTC.
All of them, despite the fact that they are sent from multiple addresses, went to one wallet - 36MVds9jUMHsDTvww9hzokSPffapHdT8Jm.
Community members noted this when in the BTC network for the first time a congestion occurred, and commissions rose to the level of the end of February. The mempool of bitcoin in the meantime reached an impressive 26 MB.
WhalePanda assumes that this phenomenon is connected with the Bithumb hack. According to him, either the exchange is trying to send its funds to a cold wallet, or the attacker devastates its wallets. Many are inclined to favor the first version, although there are supporters and the second, who admit that Bithumb deleted information about the amount of stolen funds, since this value was not final.