A senior CFTC official said in remarks delivered on 31 March that insider-trading laws apply to prediction markets and that the agency will step up detection, investigations, and prosecutions. The comments come as total trading volume across platforms including Polymarket and Kalshi reached $75 billion in Q1 2026, versus $330 million in Q1 2024.

A research paper involving Google warns that sufficiently advanced quantum computers could eventually break elliptic-curve cryptography used by major blockchains, adding pressure to Ethereum's post-quantum transition plans. The authors estimate 1,200–1,450 logical qubits could crack secp256k1 within minutes, with an “on-spend” attack window potentially as short as 9–12 minutes. Ethereum’s roadmap is expected to take years as larger signatures and higher compute requirements complicate upgrades and user migrations.

Coinbase has suspended trading for Ronin (RONIN) as the network moves into the execution stage of its planned migration to a new Ethereum layer-2. The exchange said on 30 March that users can still withdraw funds, but it will not handle the migration for customers and RONIN must be moved to a compatible self-custodial wallet before the upgrade completes.

Bitmine Immersion Technologies said it added 71,179 ETH in the week ending March 29, worth over $140 million at roughly $2,005 per token. Over the same March 23–29 window, Strategy disclosed it made no Bitcoin purchases and did not issue shares via its at-the-market program. Both firms hold about 3.6%–3.9% of their network supply, but their treasury approaches and mNAV multiples differ.

P2P.me said its team controlled an on-chain account labeled "P2P Team" that wagered on whether the project would hit a $6 million fundraising target. The project said the trades were made about 10 days before the raise ended using its foundation treasury, and it plans to unwind the positions and return proceeds. The disclosure followed Polymarket's March 23 update that tightened definitions around insider trading and manipulation.

Bitcoin spot ETF flows have started to stabilize after weeks of outflows, with cumulative inflows recovering by nearly $3 billion since late February. Even so, positioning data indicates many holders remain at a loss, as an estimated average cost basis near $82,000 sits above BTC's roughly $63,000–$69,000 trading band while price action continues to consolidate.

The UK government has sanctioned Xinbi, a crypto-linked marketplace it says supported scam centres across Southeast Asia. Announced in a statement on 26 March, the measures aim to cut the platform off from legitimate crypto rails by restricting its ability to send and receive funds. The action also targets people and entities connected to the "#8 Park" compound in Cambodia, which is believed to have capacity for up to 20,000 workers.

Hong Kong has implemented new National Security Law rules effective March 23 that make it a criminal offense to refuse to provide passwords or help decrypt personal electronic devices. The measures apply to residents, visitors, and even transit passengers at Hong Kong International Airport, and allow police to access and retain phones or laptops deemed relevant to national security cases. While not aimed at digital assets, the change may affect people who manage crypto wallets, exchange logins, or authentication tools on their devices.

Solana researchers have presented "Constellation," a protocol proposal that replaces single-leader block production with multiple concurrent proposers to curb MEV and reduce validator influence over transaction ordering. The design adds "attesters" to timestamp submissions and uses fixed economic ticks of around 50 milliseconds to set more predictable windows for transaction inclusion.