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ZachXBT claims Circle failed to halt $420M in USDC

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ZachXBT claims Circle failed to halt $420M in USDC

Circle faced fresh scrutiny after onchain investigator ZachXBT alleged that the USDC issuer failed to freeze or blacklist about $420 million in illicit fund flows since 2022. 

Summary

  • ZachXBT said Circle failed to freeze illicit USDC across 15 hack and fraud cases since 2022.
  • The claims included GMX, Cetus, and Drift, where Circle allegedly had time to block funds.
  • The accusations renewed debate over stablecoin issuers, compliance duties, and delayed responses to onchain crime.

The claims centered on 15 hack and fraud cases in which Circle allegedly had time to act but did not move fast enough, according to ZachXBT’s public thread and follow-up reporting.

ZachXBT said Circle took “minimal” action or failed to act in 15 separate cases tied to stolen or illicit USDC flows. He argued that the delays stretched across three years and involved law enforcement requests, private sector requests, and cases that were visible onchain.

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He pointed to several examples. ZachXBT said Circle did not freeze about $9 million in USDC linked to the GMX hack in July 2025. He also said Circle blacklisted wallets tied to the Cetus hack only after the stolen USDC had already been converted into Ether. 

In a recent Drift Protocol case, he said attackers moved about $232 million during a six-hour window through more than 100 transactions before the funds were converted. Cointelegraph said Circle did not provide an immediate response before publication.

The allegations renewed debate over how much responsibility a centralized stablecoin issuer should carry during hacks and fraud cases. Circle has the technical ability to freeze USDC and blacklist wallet addresses, which made the timing of any response a central issue in the discussion around ZachXBT’s claims.

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ZachXBT tried to separate the criticism from a broader attack on Circle. He wrote, 

“Circle builds good products, and I hold USDC myself. This isn’t a post about hoping they collapse.” 

He added that “nine figures were lost from the ecosystem because of repeated inaction” and said the $420 million figure covered only major public cases.

Circle’s past actions stay in focus

The renewed criticism also drew attention to Circle’s earlier comments on transaction controls. In September 2025, Circle President Heath Tarbert said the company was exploring “reversible” USDC transactions that could be rolled back or amended in cases of hacks, theft, or fraud. That idea suggested Circle was already studying stronger user protections for some payment flows.

Circle has acted in other enforcement cases before. In August 2022, the US Treasury’s Office of Foreign Assets Control sanctioned Tornado Cash, saying the mixer had been used to launder more than $7 billion in virtual currency since 2019. After those sanctions, Circle froze USDC tied to sanctioned Tornado Cash addresses, showing that the company has used blacklist controls when compliance action required it.

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Crypto World

Why Bearish Bets and ETF Flows May Spark a Rally

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Why Bearish Bets and ETF Flows May Spark a Rally

Key takeaways:

  • Bitcoin hitting $72,000 would liquidate $2.5 billion in shorts, potentially crushing bears who are overleveraged.

  • Iran’s war and high oil prices currently pressure BTC, but a ceasefire or ETF inflows could spark a rapid recovery.

$2.5 billion in shorts at risk if BTC hits $72,000

Bitcoin (BTC) has consistently failed to hit new highs since attempting to reclaim the $75,000 level since March 17.

Bearish Bitcoin futures bets have been piling up as the war in Iran pushed oil prices to their highest levels since June 2022. However, two events could propel Bitcoin to $72,000 in the coming weeks and help cement a sustainable bull run.

BTC futures aggregate estimated liquidation levels, USD. Source: Coinglass

According to Coinglass estimates, a total of $2.5 billion in short positions on Bitcoin futures will be liquidated if Bitcoin rises just 7.5% to $72,000 from the current $67,100 level.

BTC bears benefit from miners’ sales, weak S&P 500

Bears have been adding shorts since March 25, when Iran reportedly refused to negotiate a ceasefire. Additional selling pressure emerged as MARA Holdings (MARA US) announced it sold 15,133 BTC on March 26. The publicly listed Bitcoin miner shifted its focus to AI computing and chose to reduce its Bitcoin holdings to pay down debt.

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After peaking near 7,000 points on Jan. 28, the S&P 500 dropped 10% by March 30. Investors fear recession risks because central banks have less room to cut interest rates due to inflation.

Oil prices have jumped over 70% since the war in Iran started in late February, which hikes logistics costs and cuts into consumer spending.

Interest rate target odds for the Sept. FOMC meeting. Source: Source: CME FedWatch Tool

Traders are pricing in 89% odds that the Fed will keep interest rates steady through September, with 5% odds of a hike to 4%.

In early March, bond futures showed the opposite, with 79% odds of rate cuts. Returns on fixed-income investments will likely stay attractive for longer.

Bitcoin perpetual futures annualized funding rate. Source: Laevitas

Meanwhile, confidence among Bitcoin bears has increased, as reflected by the negative funding rate in perpetual futures contracts.

In neutral market conditions, longs usually pay to keep positions open, causing this indicator to range between 5% and 10% to compensate for capital costs.

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Negative funding rates signal a lack of demand for bullish leveraged bets and potential overconfidence from the bears.

Ceasefire or economic weakness may boost Bitcoin

While it is impossible to predict the outcome of the war involving Iran, a ceasefire agreement could spark bullish sentiment and catch bears by surprise.

Bitcoin jumped from $69,150 to $74,900 during the five days ending March 16 after US-listed Bitcoin exchange-traded funds saw $1.5 billion in net inflows over two weeks. If ETF inflows resume, Bitcoin could also reclaim the $72,000 level.

Related: Bitcoin ETFs ‘will be larger’ than gold ETFs–Analyst

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US-listed Bitcoin ETF daily net flows, USD. Source: SoSoValue

US President Donald Trump has asked Congress to boost defense spending to $1.5 trillion, according to a 2027 budget proposal released Friday. These plans include a 10% cut in other areas to offset military expenses.

Trump reportedly said at a private White House event on Wednesday: “We’re fighting wars. We can’t take care of day care,” according to CNBC.

If the US economy loses steam, or if private credit redemptions continue to pressure the market, investors will likely look for alternative hedges.

Consequently, Bitcoin’s appeal would grow as the it presently trades 47% below its all-time high. Thus, a bull run to $72,000 might happen regardless of how long the war in Iran lasts.