The White House Says US and Iran Are on the Verge of Reaching an Agreement

On April 21, the Shanghai Municipal People's Government General Office issued a notice about the *Implementation Plan for the National Digital Economy Innovation and Development Pilot Zone (Shanghai)*. The notice outlines key initiatives: - Exploring cutting-edge technologies - Accelerating pilot applications and commercialization of brain-computer interfaces (BCI), sixth-generation mobile communications (6G), and quantum computing - Building a shared R&D service platform for common technologies - Launching research into the Web 3.0 Innovation Testbed’s operational mechanism - Developing a trusted technology infrastructure based on smart contracts - Conducting systematic technology verification This version uses American English conventions (concise phrasing, bullet points for readability, natural capitalization, and clear term pairing like "launching research" instead of "initiating research" for flow).

On April 21st, Dragonfly General Partner Haseeb Qureshi published an analysis of the Arbitrum Security Council’s freeze of 30,766 ETH belonging to the KelpDAO hacker. Key details from the analysis: - The transaction was an **ArbitrumUnsignedTxType** (EIP-2718 type 0x65/101) — a system-level transaction that regular EOAs cannot sign, and only the Arbitrum Security Council can inject via ArbOS. - This action did **not** involve chain rollbacks or historical state rewrites; it was a *state-level clawback*: the hacker’s private key still works for signing transactions, but the ETH in their address was moved by the chain itself. - The operation showcased the Security Council’s authority in the "catastrophic emergency" scenario outlined in Arbitrum’s progressive decentralization documentation.

Binance announced on April 21 that it will adjust partial asset collateralization ratios for its Unified Account on April 24, 2026, at 14:00 UTC+8. Key collateral ratio changes: - WBTC: 70% → 60% - CAKE & ETHFI: 60% → 50% - INJ: 60% → 40% - TRUMP: 50% → 30% Starting at 14:30 UTC+8 the same day, leverage and margin tiers will be reduced for nearly 20 U-margined perpetual contracts, including ARKMUSDT, BIGTIMEUSDT, and BOMEUSDT. Binance reminds users that existing positions will be impacted, and contract grid strategies may be terminated. Users are advised to adjust positions promptly ahead of the changes and closely monitor their Unified Account’s maintenance margin ratio to mitigate potential liquidation risks.

April 21st Update: In the context of the meme coin ASTEROID, the mother of 15-year-old Liv Perrotto clarified that earlier posts on her X account were fake—her account had been hacked. She never created any cryptocurrency or account to profit from her daughter’s passing. All revenue generated on the Bags platform will be used entirely to establish a memorial foundation in her daughter’s honor. She also apologized to anyone who lost money in the scam, saying: “I would rather the hacker steal my money than harm others.” She emphasized the account was only used to honor her daughter and share her story.

April 21st — Per HyperInsight monitoring (https://t.me/HyperInsight), the "Silver Ironhead Air Force" address (0x61ceef212ff4a86933c69fb6aca2fe35d8f2a62b) opened a 20x leveraged ETH short position in the past 30 minutes. Key details: - Average entry price: $2,314 - Position size: 5,181 ETH (~$12 million) - Liquidation price: $2,790

April 21 — A Reuters report citing SpaceX’s prospectus shows President and Chief Operating Officer Gwynne Shotwell earned total compensation of $85.8 million last year, ranking among the highest-paid U.S. executives. Shotwell received a $1 million base salary, with most of her pay derived from stock options and awards. The prospectus summary notes Chief Financial Officer Bret Johnson’s total compensation was $9.8 million. As a major SpaceX shareholder, CEO Elon Musk took home just $54,080 in salary last year.