起源计划 | 第二期 CPI 抽奖结果公示

根据活动规则，抽奖过程为在投给冠军（So Dapp）战队的票数中随机抽取 60 个中奖名额，每个 1000 FC，结果如下：

抽奖程序：

import hashlib

import os

def sha3(x):

  m = hashlib.sha3_256()

  m.update(x.encode())

  return m.hexdigest()

def pick(x):

  global data

  l = 0

  r = len(data) - 1

  while (l <= r):

    mid = (l + r) >> 1

    if (eval(data[mid][3]) >= luck):

      r = mid - 1

    else:

      l = mid + 1

  return r + 1

# get transfer logs

fin = open('transfer.log', 'r')

lines = fin.readlines()

# parse

# 0: epoch number

# 1: sender address

# 2: amount

# 3: accumulate amount

data = [x.strip().split(' ') for x in lines]

# filter transfer log with amount = 0

data = list(filter(lambda x : eval(x[2]) > 0, data))

# calculate initial sha3 hash

hashes = [sha3(' '.join(log)) for log in data]

now_hash = sha3(' '.join(hashes))

# roll

total_voted = eval(data[-1][-1])

award_cnt = 60

awarded = {}

for i in range(award_cnt):

  now_hash = sha3(now_hash + " conflux pioneer initiative {}-th price draw".format(i))

  luck = int(now_hash, 16) % total_voted

  luck_user = data[pick(luck)][1]

  if luck_user in awarded:

    awarded[luck_user] += 1

  else:

    awarded[luck_user] = 1

print(awarded)

END

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