The price of bitcoin briefly fell below $ 40,000 on Monday, a session low since late September.
At 3:45 p.m. the cryptocurrency was down 2.6% to around $ 41,198, moments after hitting a September low of $ 39,663.18.
An amount now very far from the historical record of 68,500 dollars reached last November.
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Two phenomena explain the fall of this digital asset, on the one hand a potential change in the Fed's policy.
Holders fear that the US central bank will raise its key rates to fight inflation.
A policy that strengthens the dollar and encourages investors to buy safer assets, leaving out riskier assets like cryptocurrencies.
Another problem is the energy crisis.
Several countries such as Kosovo in turn prohibit mining deemed too greedy in electricity.
Kazakhstan, which has become the largest producer in the world (65%) since the Chinese ban, is today in the grip of strong tensions after the sudden rise in the price of gas.