In part 2 of this sit down with Carl Dong, Murch and Jonas cover the delicate work of modularizing the Bitcoin consensus engine.

In this conversation, we cover:

• Carl's De-globalize ChainstateManager PR (2:25)

• Async Block Processing PR

• Deglobalize class of chainstate manager (g_chainman) (3:40)

• AssumeUTXO

• global variables and main (5:25)

• scripted diff (9:35)

• 0.8 upgrade consensus failure (11:25)

• Jorge Timon's libconsensus project (13:10)

• current libbitcoinconsensus only does script verification (13:25)

• the case for multiple implementations (14:40)

• ABI (15:10)

Thanks as always to Matthew Zipkin for the sound engineering.