blocktimes

from bitcoinrpc.authproxy import AuthServiceProxy, JSONRPCException
import time
from decimal import *
import json
import pprint
import plotly.plotly as py
from plotly.offline import download_plotlyjs, init_notebook_mode, plot, iplot
from plotly.graph_objs import *

pp = pprint.PrettyPrinter(indent=2)

class Node:
    def __init__(self, uri):
        self.conn = AuthServiceProxy(uri);

class Chain:
    def __init__(self, short, name, node):
        self.short = short
        self.name = name
        self.node = node

        self.best_block_hash = self.node.conn.getbestblockhash()
        self.best_block = self.node.conn.getblockheader(self.best_block_hash)
        self.height = self.best_block['height']

    def __str__(self):
        return "Chain %s (%s): @%i" % (self.short, self.name, self.height)

    def getblockheader(self, h):
        block_hash = self.node.conn.getblockhash(h)
        block_header = self.node.conn.getblockheader(block_hash)
        return block_header

    def blocktime_histogram(self, delta_h, hist_size=60, hist_seconds_per_bin=60, height=-1):
        if height < 0:
            height = self.height

        hist = [0 for i in range(hist_size)]

        block = self.getblockheader(self.height - delta_h )
        for h in range( height - delta_h + 1, height ):
            old_block = block
            block = self.getblockheader( h )
            block_time = block['time'] - old_block['time']
            hist_index = block_time // hist_seconds_per_bin;
            hist_index = max(min(hist_size-1, hist_index), 0)
            #print ("h=%u #%u: block_time: %u hist_index: %i" % ( h, block['height'], block_time, hist_index ))
            hist[hist_index] += 1

        fig = Figure(
            data = [
                Bar(
                    x = [(i*hist_seconds_per_bin/60) for i in range(hist_size)],#.append("%i+" % (hist_size*hist_seconds_per_bin/60),
                    y = hist
                )
            ],
            layout = Layout(
                title = "%s block time histogram (blocks #%i - #%i, %i blocks)" % ( self.name, height - delta_h, height, delta_h ),
                xaxis = dict(title='block time (in minutes, based on block header times)'),
                yaxis = dict(title='number of blocks')
            )
        )
        return fig


xbc = Chain( 'BCC', 'BitcoinCash', Node('http://joebitcoin:<password>@localhost:8332'))
xbt = Chain( 'BSW', 'BitcoinSegWit', Node('http://joebitcoin:<password>@localhost:8342'))

delta_h = 2016
hist_size = 60
hist_seconds_per_bin = 60

init_notebook_mode(connected=True)
iplot(xbc.blocktime_histogram( delta_h, hist_size, hist_seconds_per_bin ))
iplot(xbt.blocktime_histogram( delta_h, hist_size, hist_seconds_per_bin ))