Beacon Client The Beacon Client serves as a full node for the BPX Beacon Chain with several key responsibilities: Maintaining a complete copy of the Beacon Chain. Validating Beacon Chain blocks. Propagating new beacon blocks and proofs across the peer-to-peer network. Providing consensus updates to the Execution Client. Beacon Clients are continually connected to a random subset of other Beacon Clients within the network. They distribute new blocks to peers, enabling all nodes to maintain a full copy of the blockchain. Beacon Clients communicate with one another over TCP port 6201.