Function casper_client::get_state_root_hash

pub fn get_state_root_hash(
    maybe_rpc_id: &str, 
    node_address: &str, 
    verbose: bool, 
    maybe_block_id: &str
) -> Result<JsonRpc, Error>

Retrieves a state root hash at a given Block.

• maybe_rpc_id is the JSON-RPC identifier, applied to the request and returned in the response. If it can be parsed as an i64 it will be used as a JSON integer. If empty, a random i64 will be assigned. Otherwise the provided string will be used verbatim.
• node_address is the hostname or IP and port of the node on which the HTTP service is running, e.g. "http://127.0.0.1:7777".
• When verbose is true, the JSON-RPC request will be printed to stdout.
• maybe_block_id must be a hex-encoded, 32-byte hash digest or a u64 representing the Block height or empty. If empty, the latest Block will be used.