According to BlockBeats, on August 13th, a user experienced an anomaly with an RBF script that automatically increased transaction fees. In one transaction, the user paid 1.60 BTC (approximately $102,800) in network fees but failed to transfer any BTC to the recipient. This transaction was included in Bitcoin block 962142 on August 12th.

According to on-chain records, this transaction had only one input, totaling 160,343,885 satoshis, all of which were ultimately paid to miners as transaction fees, resulting in an output of 0. The reason was that the user-run automated script increased the RBF fee every second without setting a reasonable fee cap, causing the fees to gradually consume the entire input amount. This block was mined by SpiderPool, and this transaction contributed approximately 88% of the block's total transaction fees of about 1.82 BTC.

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According to BlockBeats, on August 13th, Citigroup stated in its latest report that Nebius' current growth bottleneck is not demand, but rather the pace of production ramp-up. The bank maintains its "Buy/High Risk" rating on Nebius with a target price of $278.

The report states that Nebius's second-quarter revenue was strong, driven by asset SLA revenue, Token Factory, Tavily, higher utilization, and on-demand demand. Management indicated that market demand remains very strong, with multiple buyers behind each GPU, and the increase in order backlog stems from larger average order sizes and increased mid-term contracts in the core AI cloud business.

Neoclouds is becoming a new focus in recent US AI stock trading. Following Nvidia's $500 billion AI infrastructure financing plan, CoreWeave's earnings report, and Lumentum's strong guidance, the market is starting to look for who can acquire GPUs, who can raise funds to build websites, and who can convert computing power into revenue.

Citigroup specifically mentioned that approximately 50%-60% of Nebius' infrastructure capital expenditures are supported by upfront payments from customers. From a cash perspective, the payback period for projects can be less than one year, around 10 months. This helps alleviate market concerns about the financial pressure of the neocloud model.

The real test will come in the second half of the year. Nebius expects most of the contracted capacity to come online in the second half of 2026, and Microsoft's related deployments will follow a similar pace. The target of 800MW to 1GW of connected power is still achievable, but converting it to active power will require network testing, integration, and debugging, which will delay revenue recognition.

Management also stated that the $7 billion to $9 billion ARR framework is not dependent on a single project, but rather driven by utilization, pricing, and capacity growth. Most of the 5GW of contracted capacity is expected to ramp up gradually over the next two to three years.

Citigroup still cautions that Nebius is a high-risk investment, with risks including customer concentration, high capital expenditure intensity, and uncertainty regarding GPU supply and financing conditions. In other words, while Nebius's AI computing power story remains clear, its stock price will be highly dependent on delivery schedules.