According to official news from BNB Chain, BNB Chain has officially launched an open upgrade hackathon with AI as the theme. This competition has no fixed deadline, and developers can develop on opBNB or BSC mainnet and testnet.

According to Polymarket data, the probability of Solana ETF being approved by the end of 2025 is 84%. The trading volume of this prediction contract is $87,205, with a deadline of December 31, 2025.

Vitalik Buterin, co-founder of Ethereum, warned that many people have lost a large amount of cryptocurrency not because it was stolen, but because it was lost. Software bugs, forgetting passwords, losing devices, paper wallets burned in the Los Angeles fire, failure to backup data when upgrading devices... all of these situations can lead to losses. Because there is no attacker to blame, victims do not feel a strong need to talk about it.

On February 28th, it was reported that the AI L1 network Nesa has launched the Mainnet Candidate version and will be fully public next week. Currently, the team is taking snapshots of all forms of participation, AI inference activities, and on-chain transactions on the test network. Earlier reports stated that Nesa was selected for the 7th season of the Binance Labs MVB accelerator program.

Week Bitcoin's decline intensified, falling 25% from the historical high set less than six weeks ago, as traders reversed their bets after the election of US President Trump. Bitcoin fell 2.8% in the Asian session, hitting its lowest level since November 11th. This is part of a general decline in cryptocurrencies, with Ethereum, Solana, and XRP also experiencing significant drops in recent days. The sell-off highlights the rapid changes in the fate of digital assets. Bitcoin hit a historical high of $109,241 on January 20th, the day Trump took office, but since then, due to concerns about Trump's aggressive stance and widespread concerns about the US economy, the price of Bitcoin has fallen sharply. Cryptocurrencies are also facing pressure from a broader shift in investor risk preferences.

According to Cointelegraph, in the market adjustment where Bitcoin fell below $80,000, discussions on social media about "buying the dip" in cryptocurrencies have reached the highest level since July last year. The on-chain analysis platform Santiment pointed out in its report that traders have shown "extreme confidence" on social platforms such as X, Reddit, and Telegram, believing that the current decline is a "buying opportunity". However, Santiment warned that the high enthusiasm in the market for buying the dip is not necessarily a signal to enter the market, as the market often develops in the opposite direction to public expectations. "Ideally, we should wait for this group enthusiasm to fade, as a signal that retail traders have suffered enough pain, before proving the rebound is reasonable." Google Trends data shows a similar trend, with the search interest for "buythedip" reaching a peak score of 100 on February 26, but has since dropped to 49.

US Treasury Secretary Besent said on the 27th that the economic framework agreement with Ukraine has been completed, covering key minerals, oil and natural gas, and infrastructure assets. Besent said that Ukrainian President Zelensky and US President Trump will sign the agreement on the 28th, and there will be no further negotiations on the issue. He said that this is a win-win deal involving strategic minerals, oil and natural gas, and infrastructure assets.

Khurram Dara, lawyer and Head of Regulation and Policy at Bain Capital Crypto, stated on X platform that the US SEC has issued guidance on meme coins today, explicitly stating that "meme coins" are not securities, but more like collectibles. Upon hearing this news, some market participants interpreted the SEC's regulatory attitude towards meme coins as "loosening". However, Khurram Dara warned that the market should not overinterpret the SEC's "friendly" stance, as the SEC's statement only represents the opinion of its corporate finance regulatory department and is limited to the federal securities law level. More importantly, the SEC clearly emphasizes at the end of the guidance that if the issuance and sale of meme coins involve fraudulent activities, they will still face enforcement and prosecution by other federal or state agencies.

According to the official announcement, Binance will support the token replacement and brand upgrade plan of Ethernity Chain (ERN) to Epic Chain (EPIC).

Michael Saylor, the founder of Strategy, tweeted, "Sell a kidney if you must, but keep the Bitcoin."

Coindesk analyst Omkar Godbole stated that Bitcoin (BTC) fell below the SMA200 moving average line on Friday, with a weekly decline of 16%. Due to renewed concerns about U.S. tariffs, demand for the U.S. dollar increased, causing the price of Bitcoin to briefly fall below the $80,000 mark for the first time since November 10.

Bitcoin fell below $80,000 for a short time today, now priced at $80,227. According to mstr-tracker data, Strategy (formerly MicroStrategy) currently holds a total of 499,096 Bitcoins, with a total purchase cost of approximately $33.1 billion, an average purchase price of about $66,357, and the current total value of Bitcoin holdings is $40.04 billion, with the floating profit from Bitcoin holdings dropping to $6.923 billion.

On February 28th, encrypted KOL Ansem tweeted, "The bullish view of Bitcoin is that the $70,000 area should be a strong support level for Bitcoin, and after this sharp drop, there are also some changes in the altcoins, they may develop their own trends. There may be significant fluctuations over the weekend, so be cautious about bearish views."

According to Beta Info, the Android version of Telegram 11.8 Beta has added multiple functions related to Star Coins, including paid messages, Star Coin withdrawals, and Star Coin purchase for Premium, currently only available on the test server.

Bitwise Chief Investment Officer Matt Hougan posted on social media that after risk adjustment, now is the best time in history to buy Bitcoin.

According to Ai Aunt's monitoring, a suspected ancient Ethereum whale from 2016 sold 14,000 ETH through Wintermute OTC, worth about $31.92 million. The sale will make a profit of about $29.07 million.

According to Onchain Lens monitoring, a long-term dormant Bitcoin whale deposited 200 BTC (about $16.38 million) into Binance after 2.5 years, with a potential profit of $11.8 million if sold. The whale had purchased these bitcoins on August 10, 2022, at a price of $22,872 per BTC, with a total cost of about $4.57 million.

According to lmk.fun monitoring, within the past 9 hours, 7 addresses have collectively withdrawn 77,458 ETH (170 million US dollars) from Coinbase.

According to TraderT monitoring, the net outflow of the US spot Bitcoin ETF was $266.31 million yesterday.

Full-chain liquidity asset agreement StakeStone released a tweet "If users hold assets such as STONE/SBTC/STONEBTC/BERASTONE, they need to continue holding" accompanied by a camera photo, implying an upcoming airdrop snapshot.