{
    "blocks":[{   
        "block1":[{
            "transactions":[{
                "transaction1":[{
                            "inputs":[{       
                                                                    
                            }],    
                            "outputs":[{                            
                                "to_addr": "Alice",
                                "value": "1000"                           
                            },{
                                "to_addr": "Bob",
                                "value": "300"                                         
                            }]    
                }]                             
            }]                 
        }]  ,   
        "block2":[{
            "transactions":[{
                "transaction1":[{
                            "inputs":[{       
                                                  
                            }],    
                            "outputs":[{                            
                                "to_addr": "Alice",
                                "value": "1000"                           
                            },{
                                "to_addr": "Bob",
                                "value": "200"                                         
                            }]    
                }],
                "transaction2":[{
                            "inputs":[{
                                "to_addr": "Alice",
                                "value": "0"                           
                            },{
                                "to_addr": "Bob",
                                "value": "0"                                         
                            }],   
                            "outputs":[{                                
                                "to_addr": "Alice",
                                "value": "0"                           
                            },{
                                "to_addr": "Bob",
                                "value": "100"                                         
                            }]    
                }]                              
            }]                 
        }]  ,  
        "block3":[{
            "transactions":[{
                "transaction1":[{
                            "inputs":[{                                                                                                         
                            }],    
                            "outputs":[{
                                "to_addr": "Alice",
                                "value": "100"                           
                            },{
                                "to_addr": "Bob",
                                "value": "200"                                  
                            }]    
                    }]                          
            }]                 
        }]  
     }] 
}