awemany

test
*~

awemany

Solving the 0-conf problem using forfeits

by /u/awemany

Overview

The problem of ensuring good security for unconfirmed transactions in Bitcoin is repeatedly discussed in the community. Right now these so-called 0-conf transactions are usually expected to be of low risk in the case of small amounts and face-to-face interaction of merchant and customer.

awemany

#!/usr/bin/env python
# CSW vs. Peter Rizun bet demo by awemany
# Note this discretizes time into seconds for easier understanding. This will
# however-so-slightly bias the calculations in here, due to coincidences etc.

import numpy as np

MEAN_BLOCK_TIME = 600

minute = 60

awemany

#!/usr/bin/env python
import numpy as np
from scipy.special import binom
from scipy.integrate import quad
from scipy.stats import erlang
######################################################################
# awemany: look at binomial
def bprop(k, n, p):
    """Binomial probability density.
    Probability of drawing exactly k x-like items out of n total, where