# Design Properties

**Redundancy**: With every validator connected to atleast 3 bitcoin nodes, there exists enough redundancy in the system to detect a fork in the longest chain.

**Liveness**: Synchronous BFT ensures all nodes are live and halts if a node goes offline.  

**Predictive Validity**: As the longest chain fork choice rule does not respect the attestations made by the BFT protocol, Twilight achieves predictive validity instead of finality.