async fn get_block_header_by_height(
state: CupratedRpcHandler,
request: GetBlockHeaderByHeightRequest,
) -> Result<GetBlockHeaderByHeightResponse, Error>
async fn get_block_header_by_height(
state: CupratedRpcHandler,
request: GetBlockHeaderByHeightRequest,
) -> Result<GetBlockHeaderByHeightResponse, Error>