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According to an official announcement from the U.S. Department of Justice, the "Fraud Center Strike Force" announced today a series of coordinated actions against Southeast Asian criminal organizations: two Chinese managers, Huang Xingshan and Jiang Wenjie, working at the "Shun Da Fraud Center" in Myanmar, have been indicted for allegedly forcing trafficked laborers to engage in cryptocurrency investment fraud and have been arrested in Thailand; a Telegram channel with over 6,000 followers, used to lure individuals to Cambodia's fraud centers for forced labor, has been shut down; and 503 fraudulent domain names disguised as legitimate investment platforms have been seized.On the financial side, the task force has frozen over $701 million in cryptocurrency suspected of being related to fraud and money laundering, and through "Operation Level Up," notified 8,935 victims, estimating the recovery of potential losses at approximately $563 million. Additionally, the U.S. State Department announced a reward of up to $10 million for information related to the "

Tether announced that it has supported the U.S. government's freeze of over $344 million USDT, involving two wallet addresses. This freezing action was carried out in collaboration with the U.S. Department of the Treasury's Office of Foreign Assets Control (OFAC) and U.S. law enforcement agencies, aimed at preventing further movement of funds.The freeze was based on information provided by multiple U.S. law enforcement agencies, linking these addresses to illegal activities. Tether stated that when wallet addresses are associated with sanctions evasion, criminal networks, or other illegal activities, the company will take freezing measures. This has now become Tether's routine response to legitimate requests from U.S. and global law enforcement agencies.Tether CEO Paolo Ardoino stated, "USDT is by no means a safe haven for illegal activities. We take immediate action when there are credible links to sanctioned entities or criminal networks. Recent events have shown what can happen when platforms fail to act swiftly, law enforcement fails, users are exposed, and trust is lost. Our approach is different; we combine blockchain transparency, real-time monitoring, and direct coordination with law enforcement agencies to prevent the flow of funds. This is a responsibility we take very seriously as one of the largest issuers in the market."This action is part of Tether's cooperation with U.S. law enforcement agencies. The U.S. Department of Justice had previously confirmed Tether's support in law enforcement actions, successfully seizing nearly $61 million and approximately $225 million in "pork scam" funds.

According to MLM monitoring, Tether has just frozen two wallets on the Tron chain, involving funds of up to 344 million USDT.

According to The Block, the price of Bitcoin has surpassed $78,000, and the Fear and Greed Index has moved out of the extreme fear zone. K33 Research indicates that Bitcoin may maintain its upward momentum, with a high likelihood of more short squeezes occurring in the short term.The K33 report points out that in the past week, interest rates have continued to decline, while prices have climbed to a three-month high. The open interest has been steadily increasing, and the lows are also being raised. The leverage ratio is gradually rising, combined with extremely low interest rates, indicating that short positions are steadily increasing, which not only raises the possibility of future short squeezes but also increases their potential scale.

The Spark strategy chief monetsupply.eth tweeted criticism of Aave's decision to unfreeze the core Ethereum WETH market, arguing that this decision is poorly considered under current conditions. After the unfreezing, it will allow LST/LRT holders to establish extremely high-yield looping positions, resulting in continuous liquidity shortages for aEthWETH, making it difficult for ordinary users to withdraw normally.Taking weETH looping as an example: weETH is currently trading at a 0.5% discount, and if it returns to par within a month, the implied yield is about 6%. Combined with the basic staking yield, the total yield can reach 8%. Meanwhile, the maximum borrowing rate for core ETH on Aave is 5.15%, allowing loopers to earn an additional 2.85% yield; weETH can be leveraged up to 14 times, resulting in a maximum annualized yield of about 45%.He believes that this essentially provides LST/LRT loopers with a "free lunch," while further deteriorating the user experience for aWETH holders and stablecoin borrowers.

MonetSupply, the strategy director at Spark, posted on platform X that Aave has decided to lift the freeze on the Ethereum Core WETH market. Under the current interest rate model, LST/LRT holders can execute high-leverage circular strategies using assets like weETH, taking advantage of the approximately 0.5% discount on the weETH market price and the Aave ETH borrowing rate cap of 5.15%, to achieve an annualized return potential of about 45%.Currently, the utilization rate of the aEthWETH market has reached 100%, making it more difficult for regular depositors and stablecoin borrowing users to exit or refinance from aWETH. MonetSupply pointed out that this decision provides arbitrage opportunities without addressing the liquidity tension of aEthWETH, weakening the liquidity and experience for regular users.

The Arbitrum Security Committee announcement has taken emergency action to rescue 30,766 ETH stored at the Arbitrum One address, which is related to the KelpDAO vulnerability. With the assistance of law enforcement, the Security Committee identified the attacker and has always ensured that the safety and integrity of the Arbitrum community are maintained without affecting any Arbitrum users or applications.After extensive technical investigation and review, the Security Committee identified and executed a technical solution to transfer the funds to a secure location without impacting the state of any other chains or Arbitrum users. As of 11:26 PM Eastern Time on April 20, the funds have been successfully transferred to an intermediate frozen wallet. The address that originally held the funds can no longer access them, and only the Arbitrum governance body can take further action to transfer these funds, which will be coordinated with the relevant parties.

According to CryptoQuant analyst @AxelAdlerJr, last night, under the influence of news from the US and Iran, Bitcoin rebounded from $74,000 to $78,000, and this rise has all the characteristics of a classic short squeeze. In just one hour, the market absorbed a peak of $357 million in short liquidations. @AxelAdlerJr believes that this rebound was not amplified by fresh demand but was driven by the forced liquidation of short positions. "This is important because a short squeeze can cause prices to rise very quickly—but by itself, it does not confirm sustainable spot demand."

According to CoinDesk, Bitcoin is currently priced at $74,700, down 0.4% in the last 24 hours. News of ceasefire negotiations between the U.S. and Iran has boosted risk sentiment, with the S&P 500 index reaching a record high on Thursday. Trump stated that the prospects for a permanent ceasefire between the U.S. and Iran "look very optimistic," claiming that Iran has agreed to abandon its nuclear ambitions, hand over nuclear materials, and reopen the Strait of Hormuz, although Iran has not yet confirmed these concessions.Meanwhile, the market is closely monitoring the structural signals behind Bitcoin's price movements. ZeroStack CEO Daniel Reis-Faria stated, "The funding rate is so negative that it indicates the market is heavily short. If Bitcoin continues to rise in this context, a large number of short positions may be forced to close, further accelerating the price upward." He predicts that if the short base is forced to cover, Bitcoin could reach $125,000 within the next 30 to 60 days.On-chain analyst CryptoVizArt provided another perspective: Bitcoin's "True Market Mean" (TMM) shows that the average cost basis of active holders is currently above the market price, indicating that holders are overall in a state of unrealized losses. Since 2016, consistently falling below this mean has often coincided with Bitcoin's most severe downturns, including the bear market from 2018 to 2019 (with a maximum drop of 57%, lasting 282 days) and the decline following the Luna and FTX collapses from 2022 to 2023 (with a maximum drop of 56%, lasting 339 days).Analysts point out that these two judgments are not mutually exclusive—the short squeeze triggered by the extremely negative funding rate and the structural pressure of overall unrealized losses among active holders can coexist. The former may trigger a significant rise, but ultimately could be absorbed by selling from the latter. The future market direction may depend on whether the U.S.-Iran ceasefire can be sustained after its expiration next week.

According to Cointelegraph, stablecoin issuer Circle is facing a class-action lawsuit in the U.S. District Court for the District of Massachusetts for failing to freeze the stolen funds from the Drift Protocol during the attack incident.The plaintiffs claim that the attacker transferred approximately $230 million USDC from Solana to Ethereum within hours using Circle's Cross-Chain Transfer Protocol (CCTP), and Circle did not intervene. The lawsuit accuses Circle of complicity and incitement to misappropriation and negligence. Crypto analytics firm Elliptic previously suspected that the attack may be related to North Korean-backed hackers, and the related funds were subsequently exchanged for ETH and transferred via Tornado Cash.

Charles Hoskinson, the founder of Cardano, stated that Bitcoin's quantum defense proposal BIP-361 has been mischaracterized as a soft fork, and is actually closer to a hard fork, and it cannot protect approximately 1.7 million early BTC generated before 2013, including about 1 million bitcoins attributed to Satoshi Nakamoto.He mentioned that the zero-knowledge proof recovery scheme in the proposal relies on BIP-39 mnemonic phrases, while early wallets used different key generation methods that cannot provide the required proof, thus the relevant assets may be permanently frozen under the current scheme. Reports also indicated that BIP-361 co-author Jameson Lopp described it as a rough concept for an emergency plan, rather than a final specification.

The Ethereum Foundation announced that its jointly initiated ETH Rangers project has completed a 6-month operation. The project aims to fund independent researchers who contribute to public safety for the Ethereum ecosystem. Seventeen grantees have achieved multiple results in vulnerability research, security tool development, threat intelligence, and incident response, including: recovering or freezing over $5.8 million, reporting or documenting over 785 vulnerabilities and client issues, identifying about 100 attackers, providing security education content covering over 209,000 users, and handling over 36 security incidents.In addition, the project has also encouraged over 800 teams to participate in security challenges, produced over 80 technical sharing and training sessions, and developed or improved more than 7 open-source security tools. The Ethereum Foundation stated that the related results indicate that decentralized networks require "decentralized defense" and effectively enhance the overall security and resilience of the Ethereum ecosystem.

According to market news, Blockstream CEO Adam Back stated at the Paris Blockchain Week that he supports the optional advancement of Bitcoin's quantum resistance upgrade and opposes the proposal to forcibly freeze quantum-vulnerable addresses. He emphasized that "preparation is much safer than hasty responses in a crisis" and pointed out that the Bitcoin community has the coordination ability to respond quickly to urgent vulnerabilities.Previously, the BIP-361 proposal ("Post-Quantum Migration and Legacy Signature Sunset") put forward by developers Jameson Lopp and five others advocated for the gradual elimination of quantum-vulnerable addresses over five years, ultimately freezing coins that have not completed migration— including approximately 1.7 million Bitcoins held by Satoshi Nakamoto.

According to CoinDesk, Blockstream CEO Adam Back stated at Paris Blockchain Week that Bitcoin developers should advance optional quantum-resistant upgrades as early as possible, even though practical quantum computers are still far from being realized.He pointed out that Taproot's flexible design can support the introduction of new quantum-resistant signature schemes without affecting existing users. Previously, Jameson Lopp and others proposed BIP - 361, which aims to gradually phase out addresses vulnerable to quantum attacks within 5 years and freeze Bitcoin that has not completed migration. Adam Back believes that the Bitcoin community can quickly coordinate responses in emergencies without the need for pre-established freezing arrangements.

According to official news, BitMEX Research has released a new research article proposing that in response to the risk of future quantum computers potentially breaking elliptic curve signatures, the Bitcoin network could adopt an alternative soft fork mechanism to "directly freeze" to reduce controversy and increase flexibility.The proposal revolves around "quantum-vulnerable fund freezing," but suggests avoiding the direct freezing of all related assets without evidence, instead gradually implementing security strategies through a verifiable condition-triggering mechanism. The core of the proposal is to establish a "signal vault," which contains special addresses generated using "accidental numbers" to prove that no one possesses their private keys. If passive spending occurs from that address, it will be regarded as on-chain evidence that quantum computing capabilities genuinely exist, thereby immediately triggering a comprehensive freeze of quantum-vulnerable assets.At the same time, the fund could attract capital through a multi-signature structure as a "quantum bounty," aimed at incentivizing potential attackers to expose their capabilities. The article also mentions that there is currently a BIP-361 proposal promoting the phased disabling of the old signature system and ultimately freezing risky assets, but this proposal is controversial due to its involvement in "mandatory freezing."The newly proposed "signal-trigger + security window" mechanism aims to replace the fixed-time freeze path, reducing potential system shocks while retaining Bitcoin's censorship-resistant characteristics, but it also brings complexity and execution risk trade-off issues.

Bitcoin core developer Jameson Lopp stated that, compared to the potential quantum computing attacks that may arise in the future, he prefers to "freeze" about 5.6 million long-dormant BTC from the network rather than let them be acquired by attackers. These Bitcoins have not moved for over 10 years and may be permanently lost, valued at approximately $42 billion at current prices. If future breakthroughs in quantum computing lead to the decryption of old address private keys, this portion of assets could be re-transferred, triggering severe market fluctuations or even a crisis of confidence.Although the community recently proposed BIP-361, the proposal is still in its early stages and is not an officially promoted plan, but rather more like a contingency plan to address "extreme risks."

According to market news, Cypherpunk Jameson Lopp and several experts in the field of Bitcoin quantum security have proposed Bitcoin Improvement Proposal BIP-361, which suggests freezing quantum-vulnerable addresses, including Satoshi Nakamoto's reserves, to prevent future quantum computers from stealing approximately 1.7 million Bitcoins.The proposal is to be implemented in three phases: first, prohibiting transfers to legacy addresses; second, invalidating legacy signatures and freezing untransferred assets after five years; and finally, allowing some users to recover frozen funds through a zero-knowledge proof mechanism. This proposal aims to promote the migration of the entire network to quantum-resistant addresses, but it has faced opposition from some community members who believe it contradicts the decentralized ethos of Bitcoin and has a predatory nature.

According to a report by Jinshi citing a reporter from Iranian state television, Iran's red lines include the Strait of Hormuz, the payment of war reparations, the unfreezing of Iran's frozen assets, and a ceasefire throughout the region.