ChainCatcher reported, citing Bloomberg, that Brazilian digital bank Nubank said it had temporarily suspended cryptocurrency deposits and withdrawals in Brazil due to an issue with an external service provider. Other crypto asset products are operating normally.
Mercado Pago, a digital financial services platform controlled by Mercado Libre Inc., said that a security incident at an institution providing risk monitoring and anti-money laundering services had caused instability in crypto asset transfers. The company added that, as a precaution, it had blocked some transfers to external wallets.
OpenAI CFO: U.S. Midterm Elections Won’t Affect IPO Plans
ChainCatcher reports, citing CNBC, that OpenAI CFO Sarah Friar said in an interview on the 6th local time that the company’s IPO plans have not been affected, despite the 2026 U.S. midterm elections changing the political landscape in Congress. Friar said the team’s job is to prepare for all kinds of scenarios, and she doesn’t think anything has had a significant impact on the company. Friar reiterated OpenAI’s goal of going public next year. She said OpenAI will not stop investing in large data centers and is trying to rebrand these facilities as “compute campuses” to meet customer demand and continue raising funds. Friar also said OpenAI’s business is currently in good shape, with revenue up 70% in the third quarter and enterprise sales doubling. She looks forward to OpenAI going public, believing that doing so aligns with its mission to make AI accessible to everyone. “Why should only institutions enjoy these benefits?”
Blockstream: Bitcoin can use new signature technology to address future quantum threats
According to ChainCatcher, citing Bloomingbit, Bitcoin infrastructure company Blockstream said in its third-quarter business update that Bitcoin can prepare for attacks by future quantum computers by adopting new digital signature technologies. The Blockstream team previously published a report comparing three lattice-based signature schemes: Dilithium, Falcon, and Hawk. Researchers concluded that Falcon-1024 offers the best balance between data size, verification speed, and the maturity of its security foundations, saying, “If we had to choose a lattice-based signature scheme for Bitcoin today, we would choose Falcon-1024.” However, they also pointed out that finalizing the Falcon standard, obtaining verified implementations, and the memory burden on hardware wallets remain key challenges. The team said hash-based signatures are the more conservative choice in the short term. Once Falcon is standardized and implementation technology matures, the two approaches could be combined to improve security and processing efficiency.
The New York Times: Suspicious Bets Placed on Polymarket Before Poll Release
ChainCatcher reports, according to (The New York Times), that researchers at Vanderbilt University discovered a Polymarket user who bet nearly $200,000 on October 31 that Nebraska Senator Pete Ricketts would win reelection. About an hour later, a poll jointly conducted by The New York Times and Siena College showed Ricketts in the lead. The report said it remains unclear whether the user had access to insider information, but they made more than $77,000 in profit. The report said the user also placed similar large bets on other markets, including Kalshi. Brett Goldstein of Vanderbilt University's Institute for National Security said the series of events was difficult to dismiss as random and warranted further investigation. Polymarket said it had identified the trades in question and was investigating, while Kalshi declined to comment.
ChainCatcher reports that, according to IT Home, multiple users reported a sudden service issue with DeepSeek on the afternoon of November 7, with conversations displaying the message “Server temporarily unavailable.” DeepSeek’s official status page shows that the issue has been resolved and service has been restored. The partial outage affecting the website and API lasted from 15:11 to 15:56 on November 7, for a total of 45 minutes.
ARK Plans to Launch 14 Thematic ETFs Covering AI and Tokenized Markets
ChainCatcher reports that ARK ETF Trust has filed registration documents with the U.S. Securities and Exchange Commission to launch 14 thematic ETFs covering areas such as artificial intelligence, robotics, biotechnology, and tokenized market infrastructure. The filing is a preliminary prospectus dated November 6 and is proposed to become effective 75 days after filing. These include the ARK Tokenized Market Infrastructure ETF. The fund plans to invest in companies that provide infrastructure for the tokenization of real-world assets and on-chain capital markets, including tokenization platforms, stablecoin issuers, exchanges, brokers, custodians, and settlement networks.
Democrats Regain Control of Congress; Nvidia AI Chip Exports to Face Scrutiny
According to ChainCatcher, with Democrats set to regain control of Congress, incoming committee leaders are preparing to ask Nvidia CEO Jensen Huang to explain whether the company has taken sufficient steps to prevent AI chips from reaching China and other U.S. adversaries. Democrats will use their authority to lead key committees to subpoena executives from Nvidia and other Silicon Valley companies to appear at public hearings and provide information for industry investigations. After the new Congress convenes on January 3, Democrats will officially control both the House and Senate. Three Republican members of the House who oversee committees related to national security have already asked Jensen Huang to brief them on his interactions in connection with Singapore-based Megaspeed International. Meanwhile, lawmakers are negotiating three bipartisan measures concerning restrictions on sales of semiconductor manufacturing equipment to China, codifying current restrictions on AI chip sales, and requiring verification of the location of AI processors. The AI Oversight Act would maintain current export controls for 18 months. The Chip Security Act would require the U.S. Commerce Department’s Bureau of Industry and Security to ensure that AI data center chips exported overseas have security mechanisms to verify whether they have been diverted to destinations of concern, such as China.
ChainCatcher reports that Coinbase CEO Brian Armstrong said he supports tokenizing the company’s stock as a publicly traded company CEO, because he wants more people to be able to own shares.
Brian Armstrong said it would be unwise business practice to shut out a potential new group of shareholders, and that the company should connect with customers where they are.
ChainCatcher reported that a community member posted that Musk had criticized Binance for controlling around 80% of the crypto market, arguing that its dominance was hindering the industry's development.
Binance co-founder Changpeng Zhao responded that the claim was false information and urged the poster to stop spreading misinformation. Musk then replied to Zhao, saying he had never posted anything related to the matter and that the information had been fabricated.
Magnificent Seven lose about $1.04 trillion in a day as cloud giants’ cash flows turn negative
ChainCatcher reports that after the U.S. midterm elections, concerns about tighter AI regulation and a slowdown in data center construction intensified, triggering a sharp sell-off in U.S. tech stocks. On November 5, the “Magnificent Seven” lost about $1.04 trillion in market value in a single day. Nvidia fell 9.26%, wiping out more than $440 billion in market value—a decline two to four times greater than those of key customers Microsoft, Google, and Amazon. Financial pressures on AI infrastructure investment are mounting. In the third quarter of this year, Microsoft, Google, Amazon, and Meta together generated insufficient operating cash flow to cover capital expenditures, leaving a funding gap of about $26.4 billion. A year earlier, the four companies still had a combined cash flow surplus of about $61.7 billion. Amazon’s free cash flow over the past 12 months shifted from $14.8 billion to a net outflow of $42.4 billion, Meta’s free cash flow turned negative for the first time in more than a decade, and Google’s long-term debt rose from about $20 billion to $125 billion.
ChainCatcher reports that Binance co-founder He Yi responded to a user’s claim that their assets were lost due to a “UID collision,” saying that every Binance user has a unique, independent UID and collisions are impossible.
He Yi explained that when transferring funds from Binance’s main platform to Binance Thailand, the user mistakenly entered a UID directly to make the transfer and did not carefully verify the details during the second confirmation step. After the incident, He Yi and four employees followed up continuously and promptly helped freeze the relevant funds. The recipient is inactive and has not yet responded, so they are still trying to make contact and reach an agreement.
He Yi reminded users that local fiat trading platforms such as Binance Turkey, Binance Thailand, and Binance US are independent platforms and do not share account systems. Users should carefully verify addresses and UIDs when transferring or withdrawing funds.
Kalshi says trading volume in midterm-related markets exceeds $2.5 billion
ChainCatcher news: Prediction market platform Kalshi officially disclosed that total trading volume in markets related to the 2026 U.S. midterm elections exceeded $2.5 billion, nearly double the $1.3 billion recorded during the entire 2024 election cycle. Around Election Day, Kalshi’s platform-wide daily notional trading volume reached $4.15 billion (including non-election contracts). Paradigm co-founder Matt Huang disclosed that Kalshi’s election contracts saw $729 million in trading volume on November 3, higher than the $244 million recorded on Election Day for the 2024 U.S. presidential election. The single market “Who will control the U.S. House of Representatives?” recorded cumulative trading volume of more than $400 million.
CZ warns of Windows vulnerability risks: Applications cannot defend against operating system-level vulnerabilities; users urged to update their systems immediately
ChainCatcher News: Binance founder CZ shared a warning about a high-severity vulnerability in Microsoft Paint, saying, “Applications cannot protect you from operating system vulnerabilities. Update your operating system immediately.” Microsoft has disclosed a Windows Paint vulnerability, CVE-2026-83844, with a CVSS score of 8.1, affecting Microsoft Paint versions earlier than 11.2605.91. The vulnerability stems from an out-of-bounds read and could allow unauthenticated attackers to remotely execute malicious code without user interaction. Microsoft has released a security patch, and there are currently no confirmed reports of the vulnerability being actively exploited. CZ used the opportunity to remind users that application-layer security measures cannot replace security updates to the operating system itself, and urged them to install system and software patches promptly.
No Change in Policy Course! Trump Replaces White House Chief of Staff, Appoints “Hardliner” Stephen Miller
After a crushing defeat in the midterm elections, Trump sent a clear signal with a personnel shake-up: he has no intention of changing course. According to Reuters, U.S. President Trump announced Friday that he had appointed longtime ally Stephen Miller, currently deputy chief of staff, as White House chief of staff, replacing Susie Wiles. The appointment will take effect Monday. One White House official said bluntly, "He is not going to change course"—even though the results of Tuesday’s midterm elections showed that tens of millions of American voters had rejected Trump’s domestic and foreign policy agenda. Miller’s promotion comes after Republicans lost control of both chambers of Congress. Democrats are set to take the reins in the House and Senate and have already announced plans to launch sweeping congressional investigations into the Trump administration. According to an analysis by The Wall Street Journal, this personnel change is the clearest signal yet that Trump intends to stick to his core positions during his final two years in office rather than seek a compromise with Democrats.
According to ChainCatcher, citing the STAR Market Daily, AI company DeepSeek has once again experienced an outage affecting its chat feature. The chat interface at one point displayed “Server busy, please try again later.” The official status page shows that partial outages affecting the website and API began at 15:11 today. The company is investigating to determine the cause.
Affected services include the chat service, DeepSeek V4 Pro API, and DeepSeek V4.1 Flash API. DeepSeek’s latest status update says a fix has been implemented and its effectiveness is being monitored.
ChainCatcher reports that, according to an official OneBullEx announcement, its Spartans strategy ecosystem has launched the “Real-Fund Seed Program,” offering real capital support to individual traders and professional strategy teams worldwide. The platform provides the initial funding, so eligible strategy providers can begin live trading on Spartans without investing their own capital, giving qualified strategy managers the opportunity to expand their assets under management.
OneBullEx said the “Real-Fund Seed Program” is part of its efforts to develop the Spartans strategy ecosystem. It aims to connect professional strategy providers with platform resources and explore a path for collaboration spanning strategy discovery, live-trading evaluation, and funding support, further expanding Spartans’ network of traders and strategy partners.
ChainCatcher News: In light of the strong reaction among U.S. voters to the high cost of living and high inflation, several Democratic members of Congress said they would work to repeal the current unreasonable tariff policies.
Lawmakers including Richard Neal and Ron Wyden plan to advance relevant legislation next year to reverse the Trump administration’s tariff policies.
OneBullEx launches Spartans strategy funding program, with up to 1 million USDT in platform co-investment per strategy
ChainCatcher reports that, according to an official announcement from OneBullEx, its Spartans strategy ecosystem has officially launched a “Strategy Funding Program.” The platform has announced a Q4 co-investment pool of 2 million USDT to support high-quality strategies that have passed live-trading evaluations. Under the program framework, the platform’s co-investment amount can reach up to 20 times the strategy provider’s own funds, with a maximum co-investment of 1 million USDT per strategy Bot. The actual amount will depend on the review results and relevant conditions. The program establishes a tiered partnership mechanism based on strategy performance, funding support, and ongoing evaluations, aiming to connect strategy development with real-world trading scenarios. OneBullEx said the program aims to provide strategy providers that have proven their capabilities on Spartans with access to greater funding, advancing the development and continued growth of the Spartans strategy ecosystem.
ChainCatcher reports that the union representing about 250 security personnel at the busiest port in the United States has agreed to extend negotiations for a new labor contract by two weeks, until November 20. The Pacific Maritime Association said both sides will continue negotiations with International Longshore and Warehouse Union Local 26 to avoid disruptions to port operations that could affect about 85% of cargo handled at the Port of Long Beach and about one-third at the Port of Los Angeles.
ChainCatcher reports, citing Observer Net, that Zhang Qingyu, abbot of Donglin Temple in Yilan, Taiwan, and his son Zhang Weifu, who has become a monk, are suspected of embezzling donations. While searching the temple, investigators dug up more than ten iron boxes containing gold and silver beneath the gravel outside the meditation hall. The items are valued at over NT$330 million (approximately 70 million yuan).
The investigation found that temple funds were transferred to private accounts and laundered through purchases of virtual currencies, gold, and silver. The case remains under investigation.
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