🔐 How Mythos AI is reshaping crypto security forever

Anthropic's Mythos AI is making crypto's security problem look very different. Plus: Strategy is 182K BTC from its 1 million target, and Luka Modrić is now in crypto. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Monday, April 27, 2026 How Anthropic's Mythos model is forcing the crypto industry to rethink everything about security Anthropic's Mythos — the AI model built to simulate adversaries rather than scan for known bugs — is pulling DeFi's security focus away from smart contracts and into the infrastructure beneath them: key management systems, signing services, bridges, and oracle networks. Mythos chains together small weaknesses across interconnected protocols, turning isolated flaws into systemic exploits. Coinbase, Binance, and JPMorgan have all reportedly approached Anthropic for access. DeFi leaders say the model will arm both attackers and defenders — and widen the gap between projects that treat security as continuous and those that treat it as a one-time audit. Read the full story → Sponsor message Markets Michael Saylor's Strategy buys 3,273 bitcoin as it inches closer to its 1 million target Strategy added 3,273 BTC for roughly $255 million at an average of $77,906 per coin, bringing total holdings to 818,334 BTC acquired for $61.81 billion at a $75,537 average. Saylor also reported a 9.6% bitcoin yield year-to-date in 2026. The firm is now less than 182,000 BTC away from its stated target of 1 million coins. Strive CEO Matt Cole also announced a separate purchase of 789 BTC at $77,890 average, lifting Strive's total holdings to 14,557 BTC valued at nearly $1.13 billion. Read more → Sponsored by CoinW Modrić-endorsed CoinW uplifts the game: legendary midfielder meets crypto's long-term vision CoinW has named Luka Modrić — Ballon d'Or winner and six-time UEFA Champions League champion — as its global brand ambassador, framing the partnership around shared values of resilience, long-termism, and disciplined growth. The exchange, founded in 2017 and now serving 20 million+ users, is using the deal to drive crypto education and onboarding for football fans ahead of the 2026 FIFA World Cup. An "Earn Your Legacy" trading competition is planned alongside curated World Cup content. Read more → Consensus Miami · May 5–7, 2026 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.

The wall is $1.5 billion of options. Can bitcoin break it?

BTC spiked to $79,480 overnight then reversed hard. Oil at $107. FOMC tomorrow. One analyst says the wall won’t hold. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Monday, April 27, 2026   Bitcoin hit a wall at $80,000 — again. BTC spiked to $79,480 during Asian hours before reversing 2% as Brent crude surged to $107, its highest level since the ceasefire began, after Trump cancelled the Vance-Rubio Pakistan trip and Iran peace talks stalled. The structural setup remains bullish — $6.4 billion in fresh stablecoin inflows to Binance since March, Hyperliquid whales at their most aggressively net-long since early March, and 47 straight days of negative funding still paying longs — but $80,000 has now rejected twice in five days. FOMC meets tomorrow. Read today’s full report → Market snapshot As of 8am EST Asset Price 24h BTC $77,816 −1.90% ETH $2,289 −2.10% SOL $83.70 −2.50% XRP $1.41 −1.70% Prices approximate. Visit coindesk.com/price for live data. What matters today Markets   Story 1 of 3 $80K rejected again. The wall is $1.5B of options. The bull case is still intact. Bitcoin’s $80,000 call option on Deribit carries $1.5 billion in notional open interest — the most popular single strike on the exchange. Dealer gamma at that level is positive, meaning market makers systematically sell into breakout attempts and buy dips, creating a structural ceiling that has now rejected BTC twice in five days. The opposing force: Binance has seen $3.4 billion in fresh stablecoin net inflows this month following $3 billion in March, Hyperliquid’s largest traders are at their most aggressively net-long since early March, and 47 consecutive days of negative funding rates continue to pay longs. FXPro analyst Alex Kuptsikevich says the pullback is consistent with the broader uptrend that began in late March and expects the wall to break once oil-driven macro pressure clears. Read more → Geopolitics   Story 2 of 3 Trump cancelled the Pakistan trip. Iran talks stall. Brent hits $107. Trump called off a planned trip by Vance and Rubio to Pakistan for a new round of U.S.–Iran peace talks over the weekend, sending Brent crude to $107 — the highest level since the ceasefire began in early April and above the threshold that analysts identify as the breakeven for material Bitcoin headwind. Oil rising alongside yields and widening volatility spreads is the tighter-financial-conditions signal that has capped every BTC rally attempt in April. The EU separately unveiled its largest-ever Russia sanctions package, with an explicit escalation of crypto sanctions-evasion measures, adding a new regulatory dimension to the week. FOMC meets tomorrow and Wednesday; any rate signal could either relieve or compound the oil-driven pressure. Read more → Bitcoin   Story 3 of 3 A developer wants to fork Bitcoin and reassign Satoshi’s coins. The community says no. Paul Sztorc — a developer who has been trying to overhaul Bitcoin’s architecture since 2015 — has proposed an eCash hard fork launching in August: a copy of Bitcoin’s code that would give BTC holders equivalent tokens, add Drivechains, and critically, redistribute Satoshi Nakamoto’s estimated 1.1 million dormant coins to other addresses. The Bitcoin community is calling it theft. The proposal arrives as a separate analysis warns that quantum computers could theoretically access ~1.7 million BTC in early wallets, but that even a worst-case sell-off would be large rather than catastrophic given how much volume the market has historically absorbed. Both debates circle the same fault line: who controls bitcoin that was mined but never moved? 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

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