The Bitcoin Development Podcast

Sebastian Falbesoner (theStack) and Mike Schmidt talk about Bitcoin Core code review, BIP324, and Sebastian’s plans for the next year.

• (0:00) - Sebastian’s journey to Bitcoin development
• (4:00) - Thoughts on contributing to Bitcoin Core in a remote, part time capacity
• (7:26) - What is the Bitcoin Core test framework?
• (12:15) - From testing to PR authorship (and Bitcoin Core #25957)
• (17:05) - The scarcity and importance of code review
• (22:56) - Benefits of BIP324, Version 2 P2P Encrypted Transport Protocol
• (29:13) - Sebastian’s approach to contributing to BIP324 and libsecp256k1
• (37:18) - BIP322 generic signmessage

Brink exists to strengthen the Bitcoin protocol and network through fundamental research and development, and to support the Bitcoin developer community through funding, education, and mentoring. Visit ⁠https://brink.dev/⁠ to learn more.

John and Gloria continue their discussion of Bitcoin's mempool by explaining parent, child, ancestor and descendant transactions.

• (0:00) - Parent and child transactions
• (2:23) - Relevance of ancestors and descendants to the mempool
• (4:17) - Reasons transactions leave the mempool
• (6:58) - Block construction considerations for miners
• (11:46) - Full node performance considerations
• (16:15) - Child pays for parent and missing inputs

Brink supports and mentors new contributors to open source Bitcoin development through our fellowship program, and supports the work of established Bitcoin protocol engineers through our grants program. Visit https://brink.dev/ to learn more.

0:25 - What is a mempool and why have one?
6:58 - Denial of service protection
8:38 - What is mempool policy?
10:15 - 3 types of mempool policy and examples of each
12:30 - Mempool policy: transaction size too small or too large
17:26 - Mempool policy: BIP125 Replace by Fee (RBF)
19:57 - Transaction pinning attacks
22:55 - Mempool policy: Discourage upgradable NOPs, witness versions, taproot leaf versions, etc

Brink supports and mentors new contributors to open source Bitcoin development through our fellowship program, and supports the work of established Bitcoin protocol engineers through our grants program. Visit https://brink.dev/ to learn more.