🔒 Could a quantum computer empty your wallet?

Google says breaking bitcoin's encryption may be far easier than we thought — plus a rule change could open trillions in 401(k)s to crypto. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Tuesday, March 31, 2026 Bitcoin bulls scramble for post-quantum protection as Google drops bombshell paper Google's Quantum AI team says cracking BTC and ETH wallet encryption could require far fewer qubits than previously assumed, with Taproot widening the attack surface. About 6.9 million bitcoin — roughly a third of total supply — already sit in wallets with exposed public keys. The industry is now racing to map a post-quantum migration path before Google's 2029 deadline. Read the full story → Policy U.S. rule change may open trillions in 401(k) funds to crypto The Labor Department proposed a rule that would make it easier for retirement plans to include digital assets, private equity, and real estate — reversing Biden-era guidance that warned fiduciaries away from crypto. The proposal enters a 60-day public comment period. Read more → Markets Bitcoin has never had a seven-month losing streak — but that could change With hours left in March, BTC is down about 1% for the month, on track to match a record six consecutive monthly losses last set in 2018–2019. In every prior bear market, bitcoin has fallen below its 200-week moving average — a level it hasn't breached yet this cycle. Read more → Consensus by CoinDesk Join CoinDesk at Consensus Miami, where agentic commerce, crypto at scale, and institutional integration are redefining the future of finance. Save 20% with the code HEADLINES Get your pass → Know someone who should be reading this? Share this newsletter See all of CoinDesk's newsletters    CoinDesk, Inc., 61 9th Avenue, 5th Floor, New York,NY,10011,USA, Unsubscribe Manage Preferences   Copyright © 2026 CoinDesk, All rights reserved.

☢️ Google says quantum could crack bitcoin in minutes

Google says quantum could crack Bitcoin in 9 minutes. The FTX $2.2B payout is today. And 401(k)s may soon hold crypto. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ SPONSORED BY Tuesday, March 31, 2026   Quantum risk is back at center stage — and the timing couldn't be worse for bitcoin. New research from Google's Quantum AI team warns that Taproot, bitcoin's own privacy upgrade, may be widening the pool of vulnerable wallets, and that a real-time attack could hijack an in-flight transaction in roughly nine minutes. Meanwhile the FTX Recovery Trust distributes $2.2 billion to creditors today, and the U.S. Labor Department just proposed a rule that would open trillions in 401(k) funds to crypto. Read today's full report → Market snapshot As of 8am EST Asset Price 24h BTC $66,200 −1.96% ETH $2,022 −1.75% SOL $80.42 −4.17% XRP $1.31 −3.03% Prices approximate. Visit coindesk.com/price for live data. A message from Nexo Unlock 30 Days of Wealth Club Premier with Nexo Nexo is a premier digital wealth platform offering crypto yield up to 16%, crypto-backed credit lines, and a wide range of digital assets. It is returning to the U.S. with an enhanced platform and 30-day access to exclusive privileges for new clients. Join Nexo Nexo's products and services are not available to residents of certain jurisdictions. This content is not intended for use by persons in any country or jurisdiction where such distribution or use would be contrary to local law or regulation. Rates, product availability, features, and applicable terms may vary based on jurisdiction, eligibility, loyalty tier, and other factors, and are subject to change at any time. What matters today Technology   Story 1 of 3 Google says Taproot could let quantum attackers crack Bitcoin in 9 minutes Google's Quantum AI team published new research Monday warning that breaking Bitcoin's cryptography may require far fewer qubits than previously thought — as low as 1,200–1,450 high-quality qubits for practical attacks. A separate Caltech/Oratomic paper found crypto wallet encryption could be broken with just 10,000 physical qubits. The concern: Taproot's default public key visibility may widen the pool of vulnerable wallets, and an in-flight transaction could be hijacked in roughly nine minutes. Google stresses attacks aren't imminent, but urges earlier post-quantum migration. Read more → Markets   Story 2 of 3 FTX distributes $2.2B to creditors today. Will they buy back in? The FTX Recovery Trust distributes approximately $2.2 billion to creditors today — the largest single payout from the bankrupt exchange to date. The key market question: how much of that capital gets recycled back into crypto versus cashed out entirely? Prior FTX distributions have had mixed price impacts, and analysts note the broader market backdrop remains fragile with bitcoin down on the day and ETF outflows resuming. A meaningful re-entry from creditors could provide a short-term bid, but the timing is complicated by the war premium still embedded in risk assets. Read more → Policy   Story 3 of 3 U.S. Labor Department proposes rule to open 401(k)s to crypto The Department of Labor has proposed a rule that would allow 401(k) plans to include alternative assets like cryptocurrency, private equity, and real estate — directly executing a Trump executive order from August. The proposal reverses Biden-era guidance that warned fiduciaries against offering crypto in retirement accounts. Labor Secretary Lori Chavez-DeRemer said the change seeks to enable investment in products that better reflect the current landscape. Critics, including Sen. Elizabeth Warren, warn it could expose retirement savers to elevated risk. The rule now enters a public comment period before potential finalization. Read more → CoinDesk Disclosure: The information contained in this newsletter, and any information linked through the items contained herein, is not intended to provide sufficient information to form the basis for an investment decision. You should seek additional information regarding the merits and risks of investing in any cryptocurrency or digital assets. L1.co Disclosure: This material is for informational purposes only, and the content contained herein should not be considered investment advice or a solicitation, offer, or recommendation to sell or buy any asset, strategy, or product. Investing in digital assets involves a high degree of risk, including the loss of principal. Crypto Daybook Americas: A newsletter from CoinDesk Were you forwarded this newsletter? Sign up here.  Copyright © 2026 CoinDesk, All rights reserved.  CoinDesk, Inc., 61 9th Avenue, 5th Floor, New York, NY 10011, USA Unsubscribe Manage preferences

🔒 Ethereum's biggest stake ever

The Ethereum Foundation just made its biggest staking deposit ever — plus FTX distributes $2.2B tomorrow, and nearly half of all BTC is now underwater. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Monday, March 30, 2026 Ethereum Foundation stakes record $42 million of ether in largest single deposit About 20,470 ETH flowed into the Beacon Chain on Monday in a series of coordinated deposits — the foundation's biggest staking batch ever. The move accelerates its plan to stake 70,000 ETH and use rewards to fund operations, ditching the controversial practice of selling treasury ETH. The foundation still holds roughly $303 million in ETH reserves. Read the full story → Week Ahead FTX Recovery Trust to distribute $2.2 billion to creditors tomorrow Tuesday's payout headlines a volatile week that also includes U.S. nonfarm payrolls on Friday, BNP Paribas launching six crypto ETNs today, and a Middle East conflict now in its fifth week driving oil above $115. Read the week ahead → Markets Bitcoin rises as Trump says U.S. in talks with 'new regime' in Iran, threatens oil infrastructure if deal fails Trump said "great progress" had been made toward ending the war, but warned the U.S. would target Iran's power plants, oil wells and Kharg Island if a deal isn't reached shortly. Read more → Consensus 2026 — Miami Don't just read crypto's top stories — experience them. Get your pass → Know someone who should be reading this? Share this newsletter See all of CoinDesk's newsletters    CoinDesk, Inc., 61 9th Avenue, 5th Floor, New York,NY,10011,USA, Unsubscribe Manage Preferences   Copyright © 2026 CoinDesk, All rights reserved.