Bitcoin Optech: Newsletter #281 Recap

Mark “Murch” Erhardt and Dave Harding are joined by Bastien Teinturier and Rodolfo Novak to discuss Newsletter #281.

News

• Discussion about griefing liquidity ads (0:46)

Changes to services and client software

• Stratum v2 mining pool launches (15:43)
• Bitcoin network simulation tool warnet announced (16:31)
• Payjoin client for Bitcoin Core released (17:30)
• Call for community block arrival timestamps (18:44)
• Envoy 1.4 released (21:41)
• BBQr encoding scheme announced (22:09)
• Zeus v0.8.0 released (22:45)

Selected Q&A from Bitcoin Stack Exchange

• What are all the rules related to CPFP fee bumping? (25:16)
• How is the total number of RBF replaced transactions calculated? (29:41)
• What types of RBF exist and which one does Bitcoin Core support and use by default? (31:37)
• What is the Block 1,983,702 Problem? (34:48)
• What are hash functions used for in bitcoin? (45:12)

Releases and release candidates

• LND 0.17.3-beta (51:59)

Notable code and documentation changes

• LDK #2685 (52:22)
• Libsecp256k1 #1446 (53:04)
• BTCPay Server #5389 (53:36)
• BTCPay Server #5490 (59:54)