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FinCEN Names New Acting Director to Replace Michael Mosier

National security expert Himamauli “Him” Das will become acting director of FinCEN while a search for a permanent director gets underway.

Updated Apr 10, 2024, 3:18 a.m. Published Aug 3, 2021, 7:08 p.m.
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The U.S. Financial Crimes Enforcement Network (FinCEN) said on Tuesday that its current acting director, Michael Mosier, who had previously worked at Chainalysis, will depart at the end of the week for a new opportunity.

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  • Himamauli “Him” Das will become acting director of FinCEN, which is a part of the U.S. Department of Treasury. Das previously worked as a national security expert and has experience at the White House, National Security Council, National Economic Council and Departments of State and the Treasury.
  • Das said in a statement that he will be returning to the Department of the Treasury to combat money laundering as well as disrupt illicit financing as technologies become more sophisticated and threats rise.
  • Prior to joining FinCEN on April 11, Mosier worked at the blockchain surveillance firm Chainalysis as its chief technical counsel.
  • "Serving as acting director of FinCEN has been an absolute honor, and I am forever grateful to the committed professionals of the bureau who work tirelessly every day to help advance the integrity and innovative strength of the financial system," Mosier said in a statement.
  • FinCEN said it is commencing a public search for a permanent director for the organization.

Read more: FinCEN Hires DOJ Crypto Czar as First ‘Chief Digital Currency Advisor’

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KuCoin Hits Record Market Share as 2025 Volumes Outpace Crypto Market

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KuCoin captured a record share of centralised exchange volume in 2025, with more than $1.25tn traded as its volumes grew faster than the wider crypto market.

What to know:

  • KuCoin recorded over $1.25 trillion in total trading volume in 2025, equivalent to an average of roughly $114 billion per month, marking its strongest year on record.
  • This performance translated into an all-time high share of centralised exchange volume, as KuCoin’s activity expanded faster than aggregate CEX volumes, which slowed during periods of lower market volatility.
  • Spot and derivatives volumes were evenly split, each exceeding $500 billion for the year, signalling broad-based usage rather than reliance on a single product line.
  • Altcoins accounted for the majority of trading activity, reinforcing KuCoin’s role as a primary liquidity venue beyond BTC and ETH at a time when majors saw more muted turnover.
  • Even as overall crypto volumes softened mid-year, KuCoin maintained elevated baseline activity, indicating structurally higher user engagement rather than short-lived volume spikes.

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Bitcoin hash rate slides during U.S. winter storm while markets shrug off mining disruption

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The temporary loss of mining power underscores academic concerns that geographic and pool concentration can magnify infrastructure failures, though markets showed little immediate reaction.

What to know:

  • Bitcoin’s hashrate fell about 10 percent during a U.S. winter storm, underscoring how local power disruptions can strain the network’s capacity to process transactions.
  • Researchers have shown that concentrated mining, as seen in a 2021 regional outage in China, can lead to slower block times, higher fees and broader market disruptions.
  • With a few large pools now controlling most of Bitcoin’s hashrate, the network is increasingly vulnerable to localized infrastructure failures, even as the price of BTC remains largely unaffected in the short term.