Identity and state of the Parallax node this server reads: chain ID (2110 on mainnet), network ID, client version, head block (number, hash, timestamp, seconds since it was mined), sync status, peer count, current gas price, and the RPC namespaces the node serves (tools needing debug, txpool, admin or xhash work only when listed). Takes no arguments. Call it first to check the server is on the expected chain and synced.