Mark “Murch” Erhardt and Dave Harding are joined by Matt Morehouse and 0xB10C to discuss Newsletter #339 . News ● Vulnerability in LDK claim processing (0:47) ● Replacement cycling attacks with miner exploitation (17:28) ● Updated stats on compact block reconstruction (23:56) Selected Q&A from Bitcoin Stack Exchange ● Who uses or wants to use PSBTv2 (BIP370)? (32:38) ● In the bitcoin's block genesis, which parts can be filled arbitrarily? (34:41) ● Lightning force close detection (36:47) ● Is a segwit-formatted transaction with all inputs of non-witness program type valid? (40:01) ● P2TR Security Question (41:41) ● What exactly is being done today to make Bitcoin quantum-safe? (44:27) ● What are the harmful effects of a shorter inter-block time? (47:57) ● Could proof-of-work be used to replace policy rules? (51:19) ● How does MuSig work in real Bitcoin scenarios? (54:54) ● How does the -blocksxor switch that obfuscates the blocks.dat files work? (57:18) ● How does the related key attack on Schnorr signatures work? (59:42) Releases and release candidates ● LDK v0.1.1 (1:01:19) Notable code and documentation changes ● Bitcoin Core #31376 (1:03:24) ● Bitcoin Core #31583 (1:04:48) ● Bitcoin Core #31590 (1:05:40) ● Eclair #2982 (1:07:17) ● BDK #1614 (1:11:39) ● BOLTs #1110 (1:12:08)