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Bitcoin Optech Newsletter #420

The Bitcoin Optech Newsletter #420 details several security releases for Core Lightning, BTCPay Server, and Eclair, alongside discussions on opt-in replay protection for future forks and the transition of the Hardware Wallet Interface (HWI) project to maintenance mode. It also covers technical updates to Bitcoin Core, including a new mempool-based fee rate estimator and RPC connection limits.

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Why It Matters

Security updates for Lightning Network implementations and Bitcoin Core improvements enhance network stability and security, while the HWI maintenance mode signals a shift in hardware wallet integration standards.