The Bitcoin Development Podcast

Brink engineers  Gloria Zhao  and  Niklas Gögge  are joined by  0xB10C  talk through the recently disclosed Bitcoin Core pre-25.0 vulnerabilities. This continues our previous discussions in  Episode 4  on  pre -0.21.0 and  Episode 5  on 0.21.0 Bitcoin Core Vulnerabilities. (0:00) - Introduction (0:48) - The DoS vulnerability in headers sync (3:12) - Discussion of checkpoints in the code (10:11) -...

Brink engineers  Gloria Zhao  and  Niklas Gögge  talk through the recently disclosed Bitcoin Core pre-22.0 vulnerabilities. This continues our previous discussion in  Episode 4  on  pre -0.21.0 Bitcoin Core Vulnerabilities. (0:00) - Introduction (1:07) - Background on Bitcoin peer-to-peer address relay (4:30) - Bitcoin Core’s AddrMan (address manager) data structure (5:37) -  Disclosure of remote...

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...

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) -...

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...

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 - Transacti...