DiscoverThe Bitcoin Development Podcast
The Bitcoin Development Podcast

The Bitcoin Development Podcast

Author: Brink

Subscribed: 3Played: 1
Share

Description

Join Brink as we talk with our fellows, grantees, and friends in the Bitcoin space about Bitcoin and Lightning technology.
5 Episodes
Reverse
Brink engineers Gloria Zhao and Niklas Gögge talk through the recently disclosed Bitcoin Core pre-0.21.0 vulnerabilities. (0:00) - Introductions and motivation for disclosures (3:17) - Absolute value of a signed integer leads to rejection of all blocks (13:50) - Too many misbehaving peers leads to DoS (21:17) - Nested loop without deduplication leads to stalling (27:34) - Vulnerability in dependency leads to potential RCE (34:17) - Large memory allocation in peer receiver buffer and send buffer (35:41) - Payment request fetch causes mysterious crashing (37:39) - Misordered logic permits download of blocks bypassing checkpoints (42:21) - Lessons learned from these disclosures
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.
Mempool Policy

Mempool Policy

2021-11-1026:21

Brink co-founder, John Newbery, and Brink fellow, Gloria Zhao, discuss Bitcoin Core's mempool policy. 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.
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 - Miner's block construction considerations 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.
Comments