Martin Zumsande and Address Relay - Episode 20

The Chaincode Podcast

Martin Zumsande joins us to tell us about the address spam in the summer of 2021 and his interests in AddrRelay and Bitcoin Core development.

We discuss with Martin:

- His background (1:38)

- Getting interested in Bitcoin (2:45)

- How to approach P2P (3:55)

- The network is changing (7:30)

- What's the purpose of the Address Manager (AddrMan)? (9:33)Peering differences to LN nodes (11:00)

- Ethan Heilman's talk on Network Partitioning Attacks (12:10)

- Addrman and eclipse attacks (12:27)

- AddrRelay and the role of node addresses (12:55)Getting connected to the network (13:37)

- Self-announcements (14:25)

- Address spam in summer 2021 and peer distribution (15:05)

- Correction: The peer would not get addresses-divided-by-peers addresses, but 2×addresses-divided-by-peers addresses as the addresses get forwarded to two peers each. (18:00)

- Estimating the Node Degree of Public Peers and Detecting Sybil Peers Based on Address Messages in the Bitcoin P2P Network by Matthias Grundmann (19:30)

- Simulating the network (20:15)

- Requesting addresses from peers (21:45)

- Walking through first connection of a node (25:25)Coinscope paper (27:10)

- Being a Bitcoin Core contributor (27:50)

Thanks to Emily Kee for the sound engineering.