In Episode 13, we sit down again with Matt Corallo and discuss his work on the Lightning Development Kit (LDK).

In this conversation we cover:

• Starting Rust-Lightning (1:20)

• Language bindings challenges (4:09)

• FFI (5:32)

• Interoperability of Lightning (7:10)

• Zero-value invoices (7:35)

• Keysend/push payments/spontaneous payments (8:20)

• What is the LDK stack? (9:29)

• Anchor Outputs (10:41)

• Child pays for parent (CPFP) (11:02)

• Who tracks the onchain state when using LND? (12:30)

• LDK tracks the channel commitment transaction, how is that done? (13:45)

• Compact block filters

• Contrasting multiple implementations working from a spec in Lighting vs. no spec with one dominant reference implementation in Bitcoin (14:58)

• The Lightning Spec

• What's the state of the Lightning Network? Have we moved beyond #reckless? (18:49)

• Denial of Service (DoS) vulnerabilities

• Channel Jamming (22:00)

• Eltoo and the punishment dynamic (22:45)

• Will the network trend to trusted relationships and lend itself to KYC? (24:50)

• FATF updates its guidance on Virtual Asset Service Provider (VASP) (26:50)

• Where LDK goes from here? (29:55)

Thanks to Caralie for the sound engineering.