Bitcoin Optech: Newsletter #347 Recap

Mark “Murch” Erhardt and Mike Schmidt are joined by Sjors Provoost and Antoine Poinsot to discuss ⁠Newsletter #347⁠.

News

● LN upfront and hold fees using burnable outputs (0:54)

● Discussion of testnets 3 and 4 (5:11)

● Plan to relay certain taproot annexes (19:01)

Selected Q&A from Bitcoin Stack Exchange

● Why is the witness commitment optional? (24:58)

● Can all consensus valid 64 byte transactions be (third party) malleated to change their size? (36:39)

● How long does it take for a transaction to propagate through the network? (47:37)

● Utility of longterm fee estimation (49:31)

● Why are two anchor outputs are used in the LN? (54:34)

● Why are there no BIPs in the 2xx range? (57:19)

● Why doesn't Bech32 use the character b? (59:55)

● Bech32 error detection and correction reference implementation (1:00:23)

● How to safely spend/burn dust? (1:02:48)

● How is the refund transaction in Asymmetric Revocable Commitments constructed? (1:07:34)

● Which applications use ZMQ with Bitcoin Core? (42:15)

Releases and release candidates

● Bitcoin Core 29.0rc2 (1:08:21)

● LND 0.19.0-beta.rc1 (1:08:55)

Notable code and documentation changes

● Bitcoin Core #31603 (45:12)

● Eclair #3044 (1:09:45)

● Eclair #3026 (1:10:38)

● LDK #3649 (1:11:02)

● LDK #3665 (1:11:59)

● LND #8453 (1:14:28)

● BIPs #1792 (1:16:00)

● BIPs #1782 (1:16:40)