# Prints the hexadecimal representation of the value. print(int('b',16), int('62ba1cd8a',16)) #testnet : A small replica of bitcoin for developers to test their app without real money. #We use bitcoin-cli command to communicate with a node. It is a command line utility. #In this course we use >testnet rather than >bitcoin-cli. #Prints all the commands to use in testnet or mainnet testnet help mainnet help #Gets the help for the related command testnet help getblockchaininfo #Makes the query with the method for the testnet. mainnet for the actual chain testnet getblockchaininfo #Gives the mining info mainnet getmininginfo #Check how the nodes talk with each other from https://bitcoin.org/en/developer-reference#protocol-versions #This changes from version to version. ipv4 / ipv6 / onion #Gives the wallet info testnet getwalletinfo #The transactions related to wallet testnet listtransactions #Code to connect to node #If you don't have bitcoinrpc install it with pip: #pip install python-bitcoinrpc """ Code: from bitcoinrpc.authproxy import AuthServiceProxy N = 115792089237316195423570985008687907852837564279074904382605163141518161494337 big_number = 105936749493397165751943248390023977685888340619776708311600296471039819517671 class RPC: def __init__(self, uri): self.rpc = AuthServiceProxy(uri) def __getattr__(self, name): """Hack to establish a new AuthServiceProxy every time this is called""" return getattr(self.rpc, name) rpc_template = "http://%s:%s@%s:%s" mainnet = RPC(rpc_template % ('bitcoin', 'python', '68.183.110.103', 8332)) testnet = RPC(rpc_template % ('bitcoin', 'python', 'localhost', 18332)) """ """ pprint : A package to print objects pretty.Especially JSON objects. from helpers import testnet from pprint import pprint pprint(testnet.getblockchaininfo()) """