US Probes Chinese Bitcoin Miner Bitmain Over National Security Risks

A major Chinese manufacturer of Bitcoin mining hardware is under federal scrutiny over potential threats to U.S. national security. The probe focuses on Bitmain Technologies Ltd., which has sold thousands of machines to ventures linked to Trump family members. A former National Security Council official calls the company a ‘screaming challenge’ on security grounds, highlighting growing tensions between Washington and Beijing over control of critical cryptocurrency infrastructure.

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US Probes Bitmain Over Bitcoin Mining Security Risks

US authorities are investigating Chinese Bitcoin mining hardware manufacturer Bitmain over potential national security threats. The probe focuses on whether the company’s mining equipment could be remotely controlled for espionage or infrastructure sabotage. This marks the latest escalation in US-China technology security tensions.

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Bitcoin Halving Returns Diminish Despite Record Prices

Bitcoin continues to shatter price records, recently surpassing $120,000, yet new data reveals a concerning trend: post-halving returns are diminishing dramatically. While the cryptocurrency’s value has surged over 9,110-fold since 2012, the magnitude of gains following each halving event has compressed significantly, dropping from 29x returns in 2017 to just 93.1% in the current cycle despite unprecedented institutional adoption and network growth.

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DefiMiner: Automated Crypto Mining with On-Chain Transparency

As cryptocurrencies like Bitcoin and Ethereum become mainstream assets, DefiMiner is addressing one of the biggest barriers to entry in the digital currency space: the complexity and cost of traditional mining. The Switzerland-based platform offers decentralized mining services that eliminate the need for physical equipment while providing transparent on-chain verification of earnings. With automated daily returns and flexible contract options, DefiMiner aims to make cryptocurrency mining accessible to both novice and experienced investors seeking to enhance their digital asset portfolios.

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US Tariffs Hit Bitcoin Miners, China Eyes Yuan Stablecoin

The US Bitcoin mining industry is grappling with nine-figure tariff invoices from Customs and Border Protection, though a Trump-family-backed venture reportedly imported 16,000 Bitmain rigs duty-free. Concurrently, Polkadot is actively courting Wall Street institutions as crypto adoption accelerates through ETFs and tokenized assets. Ethereum accumulation is rising among corporate treasuries, while Beijing appears to be preparing for yuan-backed stablecoin approval—a significant potential shift in China’s digital currency strategy that could challenge dollar-dominated stablecoins.

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Bitmain to Open US BTC Mining Facility by 2025

Bitmain has announced plans to establish its first Bitcoin mining hardware manufacturing facility in the United States by the end of 2025. In a related development, American Bitcoin, a mining firm with ties to the Trump family, recently purchased 16,299 Antminer U3S21EXPH units from Bitmain for approximately $314 million, capable of delivering 14.02 EH/s of computing power. The deal was structured to avoid potential price hikes from Trump-era trade tariffs on Chinese-manufactured mining hardware. This move signals growing US involvement in crypto mining infrastructure and hardware production.

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Cango Mines 650.5 BTC in July Amid Bitcoin Pivot

Three months after shifting its focus entirely to Bitcoin mining, Chinese conglomerate Cango (CANG) has reported a substantial increase in production, mining 650.5 BTC in July—up from 450 BTC in June. The surge follows its acquisition of Bitmain mining rigs, highlighting improved operational capacity in a competitive market. Farside Investors has added Cango to its miner dashboard, replacing Hut 8 due to insufficient disclosures. Since its full transition in April, Cango has mined a total of 954.5 BTC in its first two months, signaling strong early performance in the crypto sector.

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SBET vs. MSTR: Key Differences Impacting Ethereum Price

SharpLink Gaming (SBET) has rapidly transformed into the largest corporate Ether holder, amassing 280,706 ETH (≈ $925 million) and staking nearly all of it. Unlike MicroStrategy, which funds its Bitcoin strategy with long-dated convertible notes, SharpLink relies heavily on equity issuance via an at-the-market (ATM) facility, leading to immediate dilution. Daniel Yan highlights governance risks, noting SharpLink’s insiders—backed by a consortium of ETH holders—may prioritize short-term monetization over long-term stewardship. While Ether ETFs see record inflows, Yan warns SBET’s equity-driven model lacks the ‘flywheel’ effect of MSTR’s debt strategy, making it more vulnerable to negative shocks. The key divergence: MSTR dilutes only when winning, while SBET dilutes to place its bet.

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Ethereum Treasuries to Reshape Wall Street’s Crypto View

Ethereum and Consensys co-founder Joe Lubin emphasized the growing role of ETH treasury strategies in bridging crypto and traditional finance during a CNBC interview. He argued that Wall Street’s focus on profitability aligns with Ethereum’s value proposition, contrasting Bitcoin’s narrative with Ethereum’s infrastructure-ready Web3 vision. Lubin cited SharpLink Gaming—holding over 200,000 ETH—as a leading example of treasury adoption, which he believes will stabilize ETH’s market and accelerate mainstream adoption. While acknowledging regulatory challenges under ex-SEC Chair Gensler, he remains bullish on decentralization trends, with his team acquiring millions in ETH daily. Treasury strategies, Lubin asserts, will cement Ethereum’s relevance as blockchain transitions from infrastructure to real-world applications.

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Top Bitcoin Mining Firms Shift to US Amid Tariffs

The world’s top three Bitcoin mining machine manufacturers—Bitmain, Canaan, and MicroBT—are setting up US production bases to avoid tariffs imposed during the Trump administration. Bitmain, the largest of the three, began US production in December, while Canaan and MicroBT are also localizing operations. Meanwhile, US-based Auradine warns of security risks from Chinese-made mining rigs, though industry leaders dispute these claims. The shift highlights growing tensions in the global Bitcoin mining supply chain, with North America hosting 30% of mining activity but relying heavily on Chinese hardware.

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Top Bitcoin Mining Firms Shift Production to US Amid Tariffs

Bitmain, Canaan, and MicroBT, responsible for 99% of global Bitcoin mining ASIC production, are establishing US-based manufacturing units in response to high tariffs on Chinese imports. According to a Reuters report, the shift comes after US President Donald Trump imposed a 25% tariff, which had previously exceeded 100%. A Cambridge University study reveals Bitmain holds 82% of the market, MicroBT 15%, and Canaan 2%. This strategic relocation aims to mitigate costs and maintain competitiveness in the evolving crypto-mining landscape.

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