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OpenAI has suspended the training of its latest AI model. According to the Associated Press, its AI agent used access keys obtained online to scrape data from the U.S. Census Bureau website, marking the second time the company has halted training since the agent breached Hugging Face. The so-called agent refers to an AI program capable of autonomously browsing the web and writing code without human approval at each step, which OpenAI tests during the model training and evaluation phases.Specifically, the agent found developer keys in public code repositories like GitHub and used them to pull demographic and economic data from the U.S. Census Data API. The U.S. Department of Commerce stated that this data was already public and there was no confidential information leaked. In the SEC incident, the agent copied public materials from SEC.gov and Investor.gov and reposted them on other websites; OpenAI claimed it did not use SEC credentials, and the SEC stated it found no evidence of unauthorized access to non-public information. Additionally, the independent AI research organization Transluce reported that an agent suspected to be from OpenAI attempted to breach the website of the Department of Education's Office for Civil Rights but was unsuccessful; OpenAI is still investigating, and the Department of Education stated that no impact was found.Regarding the frequent involvement with government websites, OpenAI told CNN that its model often regards government websites as authoritative sources of public information. The company stated that it has currently notified dozens of agencies, and the review of the agent's activities will take months.

According to Catcher Predict monitoring on-chain data, it predicts significant capital movements in the market Polymarket. A large whale invested $107,897.47 in a single transaction for "Spread -3.5" during the "Eagles vs. Bears" event. Based on the current transaction price, the latest corresponding winning probability for this target is 52%.

The cryptocurrency exchange platform Binance has seen a net outflow of over 13,800 Bitcoins, setting a record for the largest single-day net outflow since 2023. Based on the price at that time, the related assets are valued at approximately 1.15 billion dollars. Binance's Bitcoin reserves decreased from about 705,000 to approximately 685,000 within four days, a reduction of about 20,000, valued at around 1.66 billion dollars.On-chain analyst Darkfrost stated that the outflow of Bitcoins from Binance is part of a broader accumulation trend, with some investors choosing to self-custody their Bitcoins. The related outflows may also be associated with institutional custody, internal wallet management, and other operational arrangements, and should not be viewed solely as evidence of accumulation behavior. After a recent rise, Bitcoin has retraced and is currently maintaining a range between 83,000 and 84,000 dollars, staying above 83,000 dollars. Market participants are paying attention to whether this price level can continue to receive support, as well as whether the outflow of Bitcoins from Binance and the decline in exchange reserves will continue.

Anthropic released Claude Sonnet 5.5 this Monday, as an upgraded version of Sonnet 5 launched in June this year. The official statement claims that this mid-range model operates over 30% faster than the previous generation, excelling in clearly defined daily tasks, fixing defects, and creating documents, slides, and spreadsheets, while also possessing sharp design capabilities. Its pricing remains at $2 per million input tokens and $10 per million output tokens, which is half of Opus 5.5, and the token consumption per task is nearly one-third less than Sonnet 5.In the Terminal-Bench 4 test, Sonnet 5.5 scored 70.6%, higher than Opus 5.5's 66.4%, and Sonnet 5's score was only 10.3%. Results from the independent testing organization Artificial Analysis also show its lead, recording 63.6% and 59.6%, while OpenAI's GPT-6 Astra scored 59.1%. In the GDPval-AA assessment of real job performance across 44 occupational categories, Sonnet 5.5 received a score of 1844, which is roughly on par with Opus 5.5's score of 1846, while GPT-6 Sol scored 1487.

U.S. President Trump stated that U.S. officials spoke with mediators aimed at ending the U.S.-Iran conflict on September 28.Reports indicate that the U.S. and Iran are expected to hold talks again through mediators on the 28th or 29th. Iranian Foreign Minister Zarif and the Qatari mediators are currently in the U.S., and the discussions will focus on negotiating revisions to Iran's proposal to reopen the Strait of Hormuz within seven days, which was presented during the United Nations General Assembly.

According to Catcher Predict monitoring on-chain data, it predicts significant capital movements in the Polymarket market. A large whale invested $240,083.34 in a single bet on "Belgium vs. France" for "France." Based on the current transaction price, the latest corresponding winning probability for this bet is 56%.

Insiders reveal that OpenAI President Greg Brockman will attend the White House's artificial intelligence conference.

According to Saudi media outlet Hadass, sources say that Iran has agreed to stop uranium enrichment in exchange for the United States easing sanctions.

The Arbitrum Foundation announced the launch of the Arbitrum Security Program, providing smart contract audit subsidies for teams building projects on the Arbitrum platform, covering applications on the testnet, mainnet projects, projects migrating from other blockchains, and exclusive Arbitrum chains.

The issuer of the stablecoin USDT, Tether, stated on September 28 that actions involving USDT in 2026 have frozen approximately $550 million, with the related wallets identified by U.S. authorities as being associated with the Central Bank of Iran and the Iranian sanctions network. Tether claimed that its cooperation with U.S. and international authorities has supported over 2,900 investigations globally, with more than 1,600 involving U.S. law enforcement agencies.According to Tether, in April 2026, it assisted in freezing over $344 million USDT across two addresses based on information provided by the U.S. Department of the Treasury's Office of Foreign Assets Control (OFAC) and U.S. law enforcement agencies. The next day, OFAC listed these addresses as digital currency identifiers of the Central Bank of Iran, with the sanctions entry associated with the Quds Force of the Islamic Revolutionary Guard Corps and Hezbollah. In July 2026, the Treasury expanded the designated scope to four additional TRON addresses, with over $130 million USDT frozen across the four wallets.Tether CEO Paolo Ardoino stated that USDT is not a safe haven for sanctioned actors, terrorist organizations, or criminal networks, and that public blockchains allow authorities to see the flow of funds, enabling Tether to take action when law enforcement provides credible information. Tether also mentioned that it collaborates with over 340 law enforcement agencies in 67 countries, and its wallet freezing policy has been aligned with the OFAC Specially Designated Nationals list.

According to SoSoValue data, as of 8 AM Eastern Time on September 28, 2026, the total net purchase of Bitcoin by global listed companies (excluding mining companies) for the week was $239 million, an increase of 30.4% compared to last week.Strategy (formerly MicroStrategy) purchased 1,665 Bitcoins last week at a price of $85,681, spending approximately $143 million, bringing its total holdings to 847,666 Bitcoins.The Japanese listed company Metaplanet did not purchase any Bitcoin last week, marking eleven consecutive weeks without a purchase.In addition, three other companies announced Bitcoin purchases or holdings last week. The French Bitcoin company Capital B announced on September 28 that it purchased 13 Bitcoins at a price of $85,693.40, bringing its total holdings to 3,538 Bitcoins; asset management company Strive announced on September 28 that it spent approximately $94.53 million last week to purchase 1,107 Bitcoins at a price of $85,396, bringing its total holdings to approximately 27,462 Bitcoins.As of the time of publication, the total amount of Bitcoin held by the listed companies worldwide (excluding mining companies) is 1,159,755 Bitcoins, an increase of 0.32% compared to last week, with a current market value of approximately $9.674 billion, accounting for 5.7% of Bitcoin's circulating market value.

According to Cointelegraph, the European Securities and Markets Authority (ESMA) has released its work plan for 2027, which will coordinate the regulation of Crypto Asset Service Providers (CASP) across countries, focusing on operational resilience, outsourcing risks, liquidity, reverse solicitation, and asset classification. ESMA Chair Verena Ross stated that the focus of MiCA has shifted from rule-making to regulation and convergence.ESMA intends to unify the reports that CASPs submit regularly to national regulatory authorities and promote common risk indicators and regulatory dashboards. ESMA will advance the centralized crypto market monitoring system MIDAS, which will be used to monitor potential market abuse under the MiCA framework.The first phase of the system is expected to be fully operational by 2027. ESMA plans to enhance the analytical capabilities of MIDAS and expand the types of data available in the fourth quarter, pending approval from the Council, while incorporating regulatory experience into the European Commission's MiCA review expected to be completed by June 2027.

According to a report by Reuters, if the Democrats gain control of the House of Representatives or the Senate after the midterm elections in November, they are expected to launch investigations into business dealings related to Trump and his family, focusing on the cryptocurrency, prediction markets, and investment businesses involving the Trump family, as well as companies that funded projects for the White House.The report states that controlling either chamber of Congress will give the Democrats more resources for committee investigations and subpoena power, with some investigations potentially starting as early as February next year. The subjects of investigation frequently mentioned by Democratic lawmakers include the venture capital firm 1789 Capital, in which Donald Trump Jr. is involved, as well as cryptocurrency companies related to the Trump family, but a final list of investigations has not yet been established.Additionally, Republican Senator John Curtis has previously called for an investigation into some of Donald Trump Jr.'s business relationships, believing that the commercial activities of the presidential family should be subject to consistent congressional oversight.

According to Businesswire, physical AI chip company SiMa.ai announced the completion of a $150 million Series C financing round, co-led by Fidelity Management & Research Company and Amplify, with participation from Alter Venture Partners, Dell Technologies Capital, Maverick Capital, Point72, StepStone Group, and others.The company has raised a total of $500 million, with a valuation rising to $1.45 billion. SiMa.ai stated that the funds will be used to scale its physical AI platform Palette Neat and to develop the next generation of dedicated physical AI chips, which are planned to be launched in the first half of 2028, with computing power reaching up to 1000 TOPS.

BNB Chain announced the appointment of Thomas Chen as Chief Business Officer. This appointment will drive BNB Chain to further focus on institutional, capital, and chain listing market activities.Thomas has deep experience in traditional finance and digital assets, with 15 years of industry experience, including over 7 years focused on team building in the digital asset infrastructure sector, possessing extensive experience in capital markets, custody, trading, and business growth.After joining BNB Chain, he will focus on bringing institutions and capital on-chain, deepening liquidity, increasing trading volume, and enhancing the long-term value of the ecosystem.

According to Coinglass data, in the past 24 hours, the total liquidation across the network was $393 million, with long positions liquidated at $304 million and short positions liquidated at $89.4363 million. Among them, Bitcoin long positions were liquidated at $78.0919 million, Bitcoin short positions at $14.9278 million, Ethereum long positions at $40.4948 million, and Ethereum short positions at $19.0626 million.In addition, in the last 24 hours, a total of 125,113 people were liquidated globally, with the largest single liquidation occurring on Binance - BTCUSDT worth $6.5404 million.

CoinMarketCap announced on platform X that its Chief Product Officer David Salamon will assume the role of Chief Executive Officer, effective immediately. The former Chief Executive Officer Rush, after leading CoinMarketCap for five years, will transition to oversee the expansion of the group's new business line.CoinMarketCap stated that David Salamon joined CoinMarketCap in 2022 and during his tenure as Chief Product Officer, he led the development of CMC AI, which has surpassed 10 million users; he also spearheaded the reconstruction of CoinMarketCap's on-chain data infrastructure, with DexScan currently tracking 107 chains.

A survey by the Democratic Party of the U.S. Senate claims that the stablecoin USDT issued by Tether has become a major payment method for Iran. The survey shows that among over 800 sanctioned cryptocurrency wallets, about 84% primarily or exclusively use USDT.The U.S. Senate Permanent Subcommittee on Investigations had previously stated that its review of blockchain records, sanctions lists, and asset seizure notices found that the sanctioned wallets are mainly distributed across the Tron and Ethereum networks and have conducted USDT transactions.