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February 2026 delivered the largest difficulty increase in Bitcoin history, wave after wave of mining bankruptcies, and a strategic exodus toward AI infrastructure. This wasn't just volatility. It was an inflection point.
Moonwell lost $1.78M on Feb 15, 2026 due to an oracle misconfiguration in code partially written by Anthropic's Claude Opus 4.6. This marks the first major DeFi exploit directly linked to AI-generated smart contract code.
Arbitrum just released an AI toolkit that lets Claude write complete Rust smart contracts with one command. The contracts compile, they run 26-50% cheaper than Solidity, and they work alongside the entire Ethereum ecosystem. This is the first time AI can natively target non-EVM languages in production.
While Lightning Labs races to put Bitcoin into AI agents, a feeless cryptocurrency called NANO has been quietly powering machine payments since 2024. NANO settles in 0.2 seconds with zero fees and no channels to manage. So why isn't it winning?
Lightning Labs released lightning-agent-tools on February 11, 2026 — a 7-skill open-source toolkit that gives AI agents native access to the Lightning Network. Agents can run a node, pay for APIs via L402 without accounts or keys, and host paid endpoints.
Bitcoin's network crossed 1 zetahash per second in September 2025. Then hashprice hit an all-time low of $33.31/PH/day in February 2026. At least nine major miners are pivoting to AI. Here's who's actually doing it.