Bitcoin: Hayes Sees Dollar Liquidity Tsunami

In an essay published on August 10, the co-founder of BitMEX puts forward a bold thesis that is already fueling lively debates within the crypto community. Arthur Hayes indeed sees a powerful catalyst in a possible US-Japanese operation aimed at supporting the yen. Result: the price of bitcoin could rebound quite quickly.

Arthur Hayes Links US-Japan Exchange Policy to Bitcoin Price

After a surprising statement in March 2026, Arthur Hayes once again stirs the crypto community with a bold thesis. On August 10, the BitMEX co-founder published an essay entitled “Yen-quake” on Substack. He asserts that the dollar-yen exchange rate is now both a political and economic problem.

In this context, the former BitMEX leader favors a specific scenario. Tokyo would deposit some of its US Treasury bonds with the Fed. In exchange, Japan would receive dollars which it would then sell to buy yen.

This operation would go through the FIMA Repo Facility. The Federal Reserve describes this tool as a temporary source of dollars intended for foreign monetary authorities. It helps them avoid abruptly liquidating their Treasuries on the market. Loans last overnight or seven days and are fully collateralized.

For Hayes, the consequence goes beyond the currency market. Each loan would indeed inflate the Fed’s balance sheet. This would increase dollar liquidity. Some of this could then flow to risky assets, including bitcoin.

In his essay, however, he clarifies an important point: this would not be a classic quantitative easing program. Funds will be lent against collateral and must be repaid.

Hayes’ Reasoning Relies on a Historical Correlation

Between 2020 and early 2022, the Fed’s balance sheet rose from about $4.2 trillion to nearly $8.9 trillion. During the same time, the price of bitcoin climbed from under $10,000 to nearly $69,000 in November 2021. This sequence fuels Hayes’ bet on a new crypto rally.

However, the parallel calls for caution. In 2020, asset purchases, stimulus checks, and near-zero rates acted in concert. Using FIMA would neither have the same scale nor the same permanence. It might improve global liquidity without mechanically causing a bitcoin bull cycle.

The Japanese urgency, on the other hand, is tangible. According to Reuters, a coordinated intervention between Washington and Tokyo pushed the dollar down from 163.99 yen to 155.20 in early August. The effect then partially faded with a return to around 159.

Analysis: the market still doubts the effectiveness of one-off purchases without a sustained rise in Japanese interest rates. For the crypto market, this fragility fuels both hope for liquidity and the risk of shock.

Bitcoin: The FIMA Scenario Remains a Bet, Not a Decision

The FIMA facility is real. However, the “dollar machine” described by Hayes remains hypothetical. According to the Fed’s official documentation, its ceiling is $60 billion per counterparty. Scott Bessent has publicly called for strengthening this safety net. However, no massive extension has been announced by the US monetary committee.

Another caveat: FIMA was designed to ease dollar funding strains, not to sustainably manage the Japanese yen. Its rate is usually higher than the private market when it functions properly. The tool becomes mainly attractive during stress periods. Limited activation would likely have less impact on bitcoin than Hayes’ scenario suggests.

That said, the opposite risk remains. If the Bank of Japan sharply raises its rates, the yen could rise quickly. Investors who borrowed this currency to buy higher-yielding assets would then unwind their carry trade. In August 2024, this mechanism amplified sales in equities and the crypto market. Bitcoin can therefore benefit from gradual liquidity creation, but suffer from a sharp adjustment.

One thing is for sure: Arthur Hayes has identified a credible channel between the yen, the Fed, and bitcoin. What happens next will depend less on speeches than on the amounts of FIMA mobilized and Tokyo’s reaction. Story to follow…