BTC fell below $30,000.00 and is trading at $29,999.00. As the market fluctuates, Cointime reminds investors to pay attention to risk control.

The main business of listed blockchain concept stocks is divided into mining, mining machine sales, chip manufacturing, digital asset management, blockchain technology provision, payment and trading platforms, etc.

On October 22nd, according to Cointelegraph, Bitcoin security researcher and developer Antoine Riard has quit developing the Lightning Network due to security issues and fundamental challenges facing the Bitcoin ecosystem. He believes that the Bitcoin community is facing a "difficult situation" because a new type of replacement loop attack has put the Lightning Network in a "dangerous position". It is understood that the replacement loop attack is a new type of attack, where attackers can use inconsistencies between various memory pools to steal funds from payment channel participants. He pointed out that addressing this new type of attack may require changes to the underlying Bitcoin network, "these types of changes require maximum transparency and recognition from the entire community, as we are changing the security architecture of the entire node processing requirements or decentralized Bitcoin ecosystem".

According to market data, BTC has broken through $30,000 and is currently trading at $30,001.4, with an intraday increase of 1.35%. The market is volatile, so please be prepared for risk control.

On October 22nd, the BitVol (Bitcoin Volatility) index launched by financial index company T3 Index in collaboration with Bitcoin options trading platform LedgerX dropped to 47.93, a decrease of 0.35% in one day. BlockBeats note: The BitVol index measures the expected implied volatility of 30 days from tradable Bitcoin option prices. Implied volatility refers to the volatility implied by the actual option price. It uses the B-S option pricing formula to calculate the volatility by inputting the actual option price and other parameters except for the volatility σ. The actual price of the option is formed by many option traders competing, so the implied volatility represents the market participants' views and expectations of the future market and is considered the closest to the actual volatility at that time.

Today's panic and greed index is 53 (yesterday was 63), and the level has changed from greed to neutral. Note: The panic index threshold is 0-100, including indicators: volatility (25%) + market trading volume (25%) + social media heat (15%) + market research (15%) + bitcoin's proportion in the entire market (10%) + Google keyword analysis (10%).

Bitcoin has retested the $30,000 price level and is currently trading at $30,135, up by 1.47%. Its dominance in the market has also increased to 51.5%, the highest it has been in three years. This growth is attributed to the positive outlook of the market, the recent legal victory of Ripple against the SEC, and the expectation of spot ETF approval. The upcoming Bitcoin halving event is also seen as a potential trigger for its elevated dominance level.

Bitcoin News stated on social media that BlackRock CEO Larry Fink said in an interview with Fox Business that Bitcoin is "heading to a safe haven." He added that Bitcoin recently rose due to false rumors about the approval of ETFs, which is "an example of people's interest in cryptocurrencies being suppressed."

Security researcher and BTC core developer Antoine Riard has quit developing the Lightning Network due to security issues and fundamental challenges facing the Bitcoin ecosystem. According to a clue on the Linux Foundation's public mailing list, Riard believes that the Bitcoin community is facing a "difficult situation" because a new type of substitute loop attack puts the Lightning Network in a "dangerous situation". Through the Lightning Network, users can open payment channels, conduct multiple off-chain transactions, and settle the final result on the Bitcoin blockchain. The substitute loop attack targets these payment channels. This is a new type of attack where attackers can steal funds from channel participants by taking advantage of inconsistencies between various memory pools.

Data from The Block dashboard shows that cryptocurrency trading volume has rebounded as Bitcoin approaches the $30,000 price threshold. The 7-day moving average of daily trading volume for the entire industry's spot platforms has been on an upward trend, increasing from $9.38 billion on September 26 to over $15 billion on October 20.

According to market data, BTC has broken through $30,000 and is currently trading at $30,004, with a daily increase of 1.81%. The market is volatile, please be cautious with risk control.

Michael Saylor, the founder and chairman of business intelligence company MicroStrategy Incorporated, believes that betting on BTC is a good investment. MicroStrategy remains the most bullish Wall Street company on Bitcoin. Since August 2020, the company has not relaxed its acquisition of Bitcoin, and recently acquired 5,445 units of Bitcoin. The recent purchase is worth $147.3 million, bringing the company's total holdings to 158,245 BTC, with a purchase price of approximately $4.68 billion. Although MicroStrategy's overall holdings may not be profitable at the current average price of the asset, Bitcoin's performance is better than other potential assets, proving that its overall investment is reasonable.

Bitcoin keeps heading higher as BTC price strength flies in the face of a hawkish Fed, but concerns over a retracement are building.

Data shows that in the past 24 hours, 2,744.44 BTC have flowed into exchange wallets, while in the past 7 days, 35,203.87 BTC have flowed out of exchange wallets, and in the past 30 days, 13,873.19 BTC have flowed out of exchange wallets. As of the time of publication, the total balance of exchange wallets is 1,814,236.49 BTC.

According to Whale Alert monitoring, 2832 BTC were transferred to Coinbase, worth $83.77 million.

MicroStrategy has reached its break-even point for holding BTC at $29,574 and is now officially profitable. Since MicroStrategy started buying Bitcoin, MSTR has risen by 154%, Bitcoin has risen by 152%, and the Nasdaq index has risen by 22%. The current market price for BTC is $29,547, and it briefly surpassed the $30,000 mark yesterday.

Data from IntoTheBlock shows that the BTC balance held by Bitcoin HODLers is hovering near a historical high of 13.45 million BTC, accounting for approximately 69% of the circulating supply. HODLers refer to individuals who have held Bitcoin for over a year and have accumulated it over time. IntoTheBlock analyst Slim Daddy stated that this is a potential reason why Bitcoin has been able to maintain a strong price position despite market volatility.

The crypto market is being closely watched by investors as digital currencies are on the rise, possibly due to optimism surrounding the approval of Bitcoin ETFs. Federal Reserve Chair Jerome Powell's comments on inflation and interest rates have also been well-received. Bitcoin has seen a 9% increase in price over the past week, with Ethereum and XRP also experiencing gains.

Greeks.live released October 20th option data on the X platform. Greeks.live pointed out that BTC continues to lead the market, and the nominal value of options holdings is the same as last week. However, the proportion of BTC put options has significantly decreased, and market sentiment has significantly improved.

October 20th news, Bitcoin Core 25.1 has been officially released, significant improvements include #27622 fee estimation (avoiding outdated fee estimation), #27727 rpc (fixing invalid bech32 address handling) and some bug fixes, etc.