This Bitcoin Optech Newsletter recap covers several key topics: a consensus bug in the NBitcoin library found via differential fuzzing, the LNHANCE software proposal combining Covenant-style opcodes, benchmarking Bitcoin script under the proposed VAROPS budget, and optimizations to Sphinx Plus (SLHDSA) for post-quantum signatures. The discussion includes insights from Julian on VAROPS and its relation to script restoration, and Moonsettler on the LNHANCE soft fork and its potential benefits for Lightning Network symmetry and covenant constructions. Additionally, the podcast addresses post-quantum signature optimizations with SLHDSA, balancing the need for quantum resistance with practical considerations for Bitcoin's scalability and security. The hosts also review recent releases and code changes in Core Lightning, LDK, LND, and BTCPay Server, as well as improvements to BIP-54, the consensus cleanup proposal.
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