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According to Bloomberg Law, Arkansas and its Oil and Gas Commission requested the Eighth Circuit Court of Appeals on Tuesday to overturn a lower court order. The order prohibits the enforcement of the state's law that restricts foreign entities from holding digital asset mining operations. The lower court previously determined that the law may have been rendered ineffective by federal regulations taking precedence.Joseph Nelson from the Arkansas Attorney General's Office rebutted this determination. He stated that the law falls within the core area of state police power, and the restricted entities are consistent with countries that the federal government has identified as threats to national security. The law was passed in 2024 and prohibits citizens or businesses from countries subject to U.S. Department of State weapon export controls from holding interests in digital asset mining equipment in the state.

According to Gate market data, the South Korean KOSPI index plummeted 8.00% during the day, currently reported at 5527.29 points. SK Hynix fell over 11%, and Samsung Electronics dropped over 9%.At the same time, the Korea Exchange activated the circuit breaker mechanism for the KOSDAQ, suspending trading for 20 minutes.

Gate will hold the "RACING THE FUTURE Vol 3" special event at the Singapore F1 circuit on October 8, inviting Laurent Mekies, CEO and Team Principal of the F1 Red Bull Racing team, along with over a dozen VIPs and high-end clients for exclusive discussions. The event will take place in the core area of the Singapore circuit, where Laurent Mekies will engage in face-to-face conversations with guests about the core strategies, event operations, and behind-the-scenes stories of the Red Bull Racing team, sharing the practices and experiences of a top racing team both on and off the track.This event will adopt a small-scale, targeted invitation format, placing the communication scene in the unique setting of the F1 circuit to provide VIP users with a deeper and more exclusive communication experience. As the official sponsor of the F1 Red Bull Racing team, Gate not only reaches a global sports audience through event collaborations but also further integrates top racing resources into user services and brand communication scenarios, offering VIP users exclusive opportunities to access international top sports resources and understand team operations and competitive decision-making.In addition, Gate will also host an F1 Red Bull driver meet-and-greet during TOKEN2049, inviting F1 World Champion and Red Bull Racing driver Max Verstappen and teammate Isack Hadjar to appear at the Gate Lounge, where they will interact with fans through autographs, photos, and engagement. By covering diverse scenarios such as driver interactions, management discussions, and high-level dialogues, Gate will further deepen its cross-border collaboration with the F1 Red Bull Racing team and expand the connection between digital assets and global sports, technology, and mainstream culture.

According to Cointelegraph, the prediction market platform Kalshi won an important ruling from the U.S. Sixth Circuit Court of Appeals, allowing it to continue operating its event contracts in Ohio and Tennessee.The ruling involves a dispute between Kalshi and the relevant state regulatory agencies regarding whether event contracts can continue to be offered. Cointelegraph stated that the court ruled to allow Kalshi's event contracts to continue operating in the aforementioned two states.

According to Eleanor Terrett, host of Crypto In America, eight banking industry associations stated in a letter to Senate leaders that the newly added "circuit breaker mechanism" for deposit outflows in the revised Clarity bill text is not a safeguard at all, believing that this mechanism will only be activated after a significant outflow of deposits has already occurred.The aforementioned associations called for further tightening of the wording related to stablecoin rewards to close what they believe are still potential loopholes that could allow for interest payments on stablecoin balances, with the core demands largely unchanged.

According to Jinshi reports, Premier Li Qiang recently signed a State Council order, announcing the revised "Regulations on the Protection of Integrated Circuit Layout Designs," which will officially take effect on October 15, 2026.

According to Jinshi reports, the Korean Exchange has activated the circuit breaker mechanism for the KOSDAQ index, suspending trading for 20 minutes.

The Korea Exchange triggered a circuit breaker due to an 8% drop in the KOSPI index, suspending trading for 20 minutes.

The South Korean trading platform (KRX) triggered the sidecar mechanism due to fluctuations in the KOSPI index, suspending programmatic trading for about 5 minutes.The sidecar mechanism is mainly used to respond to severe fluctuations in a short period of time, limiting only programmatic trading while manual trading can continue normally. Unlike the circuit breaker mechanism, the sidecar mechanism does not suspend trading for the entire market and is more viewed as a "speed bump" during market volatility.In contrast, the circuit breaker mechanism is typically used in extreme market conditions and, once triggered, suspends trading for the entire market to prevent panic-induced fluctuations from further escalating.

The Korea Exchange triggered a circuit breaker due to the KOSPI index falling 8%, halting trading for 20 minutes.

The KOSPI index in South Korea has fallen by 5%, with Samsung down 6.5% and SK Hynix down over 8%. Nasdaq futures are down nearly 1%, and large chip stocks are broadly down in after-hours trading.The Korea Exchange has activated the KOSPI circuit breaker due to a 5% drop in KOSPI 200 futures, pausing programmatic trading for 5 minutes.

The Korea Exchange activated the circuit breaker for KOSPI due to a 5% rise in KOSPI 200 futures, and program trading was suspended for 5 minutes.

Andre Cronje stated in an interview with Cointelegraph that many DeFi protocols today are "no longer truly DeFi" and are more like "profit-driven companies operated by teams," as they generally rely on upgradable contracts, multi-signatures, off-chain infrastructure, and manual operational control.Cronje pointed out that the current industry is still overly focused on smart contract audits while neglecting operational risks that are closer to traditional finance (TradFi). He believes that recent attack incidents are not due to code vulnerabilities but stem from off-chain infrastructure, permission management, and social engineering attacks.The discussion arises from the recent frequent security incidents in DeFi. In April, protocols such as Flying Tulip, Drift Protocol, and Kelp encountered security events, with Drift and Kelp suffering losses of approximately $280 million and $293 million, respectively.In response, Flying Tulip has introduced a "Withdrawal Circuit Breaker," which can delay or queue withdrawal requests when unusually large withdrawals occur, allowing the team about 6 hours to respond. Cronje emphasized that this mechanism does not permanently freeze withdrawals but serves as a layer of protection within the security system.However, Michael Egorov holds a cautious attitude towards this. He stated that the circuit breaker itself could also become a new point of centralized risk. If control permissions fall into the hands of an attacker, the mechanism originally intended to protect the protocol could instead be used to freeze assets or directly transfer funds.Egorov believes that the long-term direction of DeFi should be to minimize human intervention and centralized permissions as much as possible, rather than adding more layers of manual control. "The security of DeFi comes from decentralization, not more human management."

According to Cointelegraph, the decentralized finance platform Flying Tulip, founded by Andre Cronje, has launched a withdrawal circuit breaker mechanism that can delay or queue withdrawals during abnormal capital outflows to limit potential losses and buy time for the team to investigate.The operation of this mechanism varies across different products: in the Perpetual PUT product, withdrawals may be rolled back, and users will need to try again later; in ftUSD, withdrawals will enter a queue and can be claimed after a delay. Flying Tulip stated that this mechanism employs a "fail-open" design, meaning that transactions can continue to be executed even if the safety mechanism fails.

The Bank of Korea stated that after the mispayment incident at Bithumb, careful consideration should be given to introducing a "circuit breaker" mechanism in the cryptocurrency market similar to that in traditional financial markets, to address extreme market volatility and systemic risks.The Bank of Korea pointed out that as the scale of the cryptocurrency market expands and related risks increase, existing regulatory measures are insufficient to fully cover potential issues. Therefore, it is necessary to study the introduction of protective mechanisms that can automatically interrupt trading to enhance market stability and investor protection. Previously, Bithumb experienced abnormal payments of some users' assets due to a system failure, which attracted market attention.

The Korea Exchange activated the KOSPI index circuit breaker after KOSPI 200 futures fell by 5%, and program trading was suspended for 5 minutes.

The South Korean stock market further declined, with the KOSPI index falling by 5%. The index plummeted by more than 4% on the 3rd, triggering a circuit breaker.

The U.S. Commodity Futures Trading Commission (CFTC) submitted an amicus brief to the U.S. Court of Appeals for the Ninth Circuit regarding the prediction market dispute between Crypto.com and the state of Nevada, arguing that Congress granted the CFTC "exclusive jurisdiction" over futures and related products under the Dodd-Frank Act, and that this authority also applies to event contracts.

The Lighter team announces that its perpetual and spot trading zk circuits have completed auditing and are officially open-sourced. The team has released the complete verification code, allowing external independent verification of every order, cancellation, and settlement operation of Lighter L2 on Ethereum to ensure their authenticity and validity.Developers can generate ZkLighterVerifier using build scripts from GitHub and perform consistency checks with the deployed contracts on Ethereum.

The Korea Exchange activated the circuit breaker for the KOSPI index after the Korea Composite Stock Price Index 200 futures fell by 5%, suspending program trading for 5 minutes.