btc-headers-extract.py

#!/usr/bin/env python3

import requests
from requests.auth import HTTPBasicAuth
import random

class BtcApi:
    def __init__(self):
        self.apiurl = 'http://127.0.0.1:12001'
        self.user = 'user1'
        self.password = 'password1'

    def getblockcount(self):
        return self.req("getblockcound")

    def getblock(self, hash: str, verbosity: int):
        return self.req('getblock', [hash, verbosity])

    def getblockhash(self, height: int):
        return self.req('getblockhash', [height])

    def req(self, method: str, params=None):
        req = {
            "jsonrpc": "2.0",
            "method": method,
            "params": params if params else [],
            "id": random.randint(0, 2147000000)
        }

        res = requests.post(
            url=self.apiurl,
            auth=HTTPBasicAuth(self.user, self.password),
            json=req
        )

        if res.status_code == 200:
            return res.json()['result']
        else:
            raise Exception(res)


api = BtcApi()

total = 10000
f = open("btc_blockheaders_0_{}.txt".format(total), "w")

for i in range(total):
    h = api.getblockhash(i)
    block = api.getblock(h, 0)
    header = block[:160]
    print(i, header)
    f.write(header)
    f.write('\n')