2021

According to CoinDesk, Bitcoin mining difficulty has been adjusted to 144.4 T, an increase of 15%, marking the largest percentage increase since 2021.Prior to this adjustment, mining difficulty had been reduced by 12% due to the impact of winter storms in the U.S. that forced miners to scale back operations. Currently, the total network hash rate for Bitcoin has rebounded to 1 ZH/s, while the price of Bitcoin has risen to around $67,000. Although the hash price is at a multi-year low of 23.9 PH/s, limiting miners' profit margins, large operators with low-cost energy are still actively mining. Among them, the mining operations in the United Arab Emirates hold approximately $344 million in unrealized profits. Additionally, some publicly listed mining companies are shifting their energy and computing power towards AI and high-performance computing data centers. For instance, Bitfarms (BITF) has announced a name change to downplay its Bitcoin identity and increase focus on AI infrastructure, while activist investor Starboard has urged Riot Platforms (RIOT) to further expand its AI data center business.

The Gwangju Prosecutor's Office in South Korea had $47.7 million worth of seized Bitcoin stolen in a phishing attack.

According to The Block, the Gangnam Police Department in Seoul, South Korea, recently discovered in an internal investigation that 22 bitcoins (currently worth about $1.5 million) seized since November 2021 have been transferred out of a USB cold wallet.Due to the suspension of the relevant investigation, the asset loss went unnoticed for a long time. The USB device involved was not stolen. The Gyeonggi North Provincial Police Agency has initiated an internal investigation to determine the specifics of the fund loss and whether any internal personnel are involved. The police declined to provide further details on the ongoing investigation.This discovery stems from a nationwide special inspection of seized property management initiated after the recent incident involving the loss of 320 seized bitcoins by the Gwangju District Prosecutor's Office. Local media reported that evidence management personnel at the Gwangju Prosecutor's Office lost the seized bitcoins due to mistakenly accessing a phishing website.

Analyst IT Tech stated in a report from CryptoQuant on Thursday that Bitcoin's seven-day average realized net loss has reached $2.3 billion, calling it "one of the largest panic sell-off events in Bitcoin's history, comparable to the 2021 crash, the 2022 Luna/FTX debacle, and the mid-2024 adjustment.""This scale of loss ranks among the top 3 to 5 in history," the analyst added, "There have been only a few instances in Bitcoin's history where such a level of panic selling has occurred." Bitcoin has plummeted nearly 50% from its all-time high of over $126,000 last October, currently trading around $66,600; it had previously dipped to a low of $60,000 on February 6 before recovering.

Economist and gold supporter Peter Schiff stated that Bitcoin has fallen below the $69,000 high set in November 2021. More importantly, priced in gold, Bitcoin's current price is 60% lower than it was at that time. Saylor invested $54 billion betting on Bitcoin and is currently down 9%, while MSTR's losses have only just begun to accumulate.

According to CryptoQuant data, the number of Ethereum transfers (14-day moving average) has reached 1.17 million. This level was previously observed near major market peaks in 2018 and 2021.Historical data suggests that such spikes often indicate peak volatility and potential chip distribution.

Economist and gold supporter Peter Schiff stated on social media that gold prices have once again surpassed $5000. Traders who shorted gold last week may face difficulties. Meanwhile, the price of Bitcoin has fallen to $76,000, currently equivalent to 15 ounces of gold, down 59% from the peak in November 2021. Priced in gold, Bitcoin is in a long-term bear market.It is reported that as a long-time gold supporter and Bitcoin critic, Peter Schiff has consistently held a negative view on cryptocurrencies.

According to Coin Bureau, since November 11, the total network hash rate of BTC has decreased by about 12%, marking the largest drop since October 2021.

Gold advocate and economist Peter Schiff tweeted, "Bitcoin is currently worth only 15.5 ounces of gold, down 57% from its peak in 2021, and just 10% higher than its peak in 2017. Despite Wall Street and the Trump administration's strong endorsement of Bitcoin, most Bitcoin holders would have seen greater returns if they had purchased gold or silver instead."

According to Jinshi News, the euro against the US dollar (EUR/USD) rose by 0.3% to 1.192, reaching its highest level since June 2021.

According to Bloomberg, CoinDesk data shows that Binance's market share in the cryptocurrency spot trading has dropped to 25%, the lowest level since 2021, far below the nearly 60% peak in 2023.Its market share in derivatives trading has also fallen from a peak of nearly 70% to about 35%. Analysts point out that trading activity flowing out of Binance is primarily shifting to non-U.S. exchanges such as Bybit, HTX, and Gate, while trading volume at U.S. exchanges, including Coinbase, has seen relatively limited growth. Meanwhile, on-chain trading platforms like Hyperliquid are attracting more derivatives trading, indicating a profound shift in market structure.

According to Cointelegraph, the viewership of cryptocurrency content on YouTube has fallen to its lowest level since January 2021, while a record 11.6 million crypto projects failed in 2025, with Memecoins being the hardest hit.Analysts pointed out that the market crash on October 10, which led to $19 billion in crypto leverage liquidations, was a key catalyst.

The cryptocurrency market research firm Santiment posted on the X platform that the privacy coin ZEC, which was born ten years ago, saw its market cap grow by about 15 times between September 22 and November 16, 2025. However, the price has fallen by 40% over the past two months, and its development activity has dropped to the lowest level since November 2021.Santiment stated that, based on historical experience, an increase in development activity often allows some excellent cryptocurrencies to stand out. Conversely, those cryptocurrencies that "let their guard down" and stop continuous innovation and improvement often struggle to survive.

According to Jinshi reports, the potential inflation rate in the United States rose year-on-year in November, but the growth rate is the lowest since early 2021. Data released by the U.S. Bureau of Labor Statistics on Thursday showed that the core CPI, excluding food and energy prices, increased by 2.6% in November, compared to a year-on-year increase of 3% two months ago. The overall CPI rose by 2.7% year-on-year in November. Due to the government shutdown, the U.S. Bureau of Labor Statistics was unable to collect most of the price data for October, which limited the agency's ability to determine broader inflation indicators for November.

According to Jinshi, the unemployment rate in the United States for November recorded at 4.6%, higher than market expectations, marking a new high since September 2021.

According to an analysis by Zhongke Lian'an, the People's Bank of China held a coordination meeting on combating virtual currency trading speculation on November 28, in conjunction with the Ministry of Public Security, the Central Cyberspace Administration, and a total of thirteen departments.The lineup of this meeting is noteworthy. Compared to the ten ministries involved in the "924 Notice" of 2021, the addition of the Central Financial Office and the National Financial Regulatory Administration, as well as the Ministry of Justice, signifies that China's regulation of virtual currencies is transitioning from sectoral collaboration to comprehensive system governance.Analysis indicates that this change will reshape the regulatory landscape on three levels: Upgraded Coordination Framework: The involvement of the Central Financial Office will promote regulation from departmental collaboration to a higher-level cross-sector coordination, forming a synergy of policies and resources. Deepened Regulatory Framework: The inclusion of the National Financial Regulatory Administration means that regulation will shift from basic monitoring of capital flows to precise identification and professional investigation of illegal financial activities. Improved Legal Framework: The addition of the Ministry of Justice will promote regulation from being dominated by administrative documents to a stronger legal application and enforcement connection, solidifying law enforcement authority.In addition, the meeting clearly identified "stablecoins" as the core target of this crackdown and emphasized a focus on "information flow and capital flow," aiming to build a technology-driven full-chain monitoring system, demonstrating the regulatory body's determination and means to comprehensively upgrade the crackdown on illegal activities related to virtual currencies.Previously, the People's Bank of China held a coordination mechanism meeting to combat virtual currency trading speculation.

According to the historical pullback data of Bitcoin provided by Charlie Bilello, as of 2025, Bitcoin has pulled back from its historical high of $126,000 in early October to the current $82,000, a decline of about 35%. This is one of the significant pullbacks in Bitcoin's history, comparable to the 32% pullback in early 2025, but far lower than the pullback levels of 78% and 84% in 2021 and 2017, respectively.Data shows that Bitcoin has experienced multiple pullbacks exceeding 50% in its history, but each was followed by a significant price rebound, with the highest rebound reaching 1504%. The current pullback is considered a normal performance within the historical volatility range of Bitcoin.

ChainCatcher news, The Kobeissi Letter posted on the X platform that since 2024, SPAC (Special Purpose Acquisition Company) founders have raised over $24 billion, exceeding the total of the previous two years. 2025 is expected to be the strongest year for SPAC performance since 2021. Recently, most SPAC transactions have focused on the nuclear energy, quantum computing, and cryptocurrency industries.However, among the 589 companies that went public via SPAC since 2019, only 11% currently have stock prices above their original issue price. During this period, 31% of the companies have gone bankrupt or been acquired, and 48% of the companies have seen their market value decline by 50% to 99%.

ChainCatcher news, according to Jinshi reports, the Federal Reserve has accepted a total of $4.124 billion from 10 counterparties in its fixed-rate reverse repurchase operations, marking the lowest level since April 2021.

ChainCatcher news, according to Jinshi reports, the Federal Reserve has accepted a total of $4.496 billion from 10 counterparties in its fixed-rate reverse repurchase operations, setting a new low since April 2021.