Breez SDK
vs Lightning Dev Kit
Contains Greenlight (See short explanation of Bluelight)
Responsibilities of an LN node
- Sending and Receiving LN payments
- Sending and Receiving L1 payments
- Layer 1 gossip
- Layer 2 gossip
- Key management and signing
- Pathfinding
- Forward payments (not Lipa)
Work distribution | LND
| Local | Cloud |
|---|---|
| LN payments | |
| L1 payments | |
| L1 gossip | |
| L2 gossip | |
| Key mgmt / sign | |
| Pathfinding |
Work distribution | WoS
| Local | Cloud |
|---|---|
| LN payments | |
| L1 payments | |
| L1 gossip | |
| L2 gossip | |
| Key mgmt / sign | |
| Pathfinding |
Work distribution | LDK
| Local | Cloud |
|---|---|
| LN payments | |
| L1 payments | |
| Electrum | |
| L2 gossip | RGS |
| Key mgmt / sign | |
| Pathfinding |
Work distribution | Greenlight
| Local | Cloud |
|---|---|
| LN payments | |
| L1 payments | |
| L1 gossip | |
| L2 gossip | |
| Key mgmt / sign | |
| Pathfinding |
Blockstream Greenlight
- Hosted by Blockstream
- Core Lightning node living in the cloud
- Shared L1 and L2 gossip
- Shutdown when not needed
- Cheap to run
- Sees only signatures, never keys
Consequences for Lipa
- Almost nothing in our own cloud
- Regulatory dream
- Less complexity
- Development
- Maintenance
- Operations on device
- Support more difficult
- Less control over change
Breez SDK
- Easy Rust interface for Greenlight
- Additional services
- LSP
- Swaps
- Fiat Currency exchange
- Fiat Currency conversions
- LNURL
Breez | Business
- Breez is free (and open source)
- Breez pays for Greenlight ops
- Breez monetizes their LSP
Breez SDK
Migration
- Move funds from LDK node to Greenlight node
- Only for existing users
- Fake migration
- Don't onboard new users
- LDK-based Lipa and Breez-based Lipa in parallel
- Move to Breez SDK quickly
Questions
