Run all the servers using python "filename.py" ** on success it will show the server is running on the port a,b,c
Now for all the Nodes make a post request on the postman "/conenct_nodes" with body->raw-> json form with the entries in the network
* mine_block ** to mine the block
* get_chain ** shows the status of the chain on the current node
* replace_chain ** synchronises the chain with the maximum chain
* add_transaction ** POST request with json details as in transaction file
* is_valid used ** an implicit call to check the internal configuration of the chain