The bet outcome is calculated by hashing today's secret with your Transaction ID.
You can check on your own by using the code and a past secret published here.

import hashlib
def xor_func(s1,s2):
   return ''.join(chr(ord(a) ^ ord(b)) for a,b in zip(s1,s2))
def verify(txid,secret,lessthan):
   sha512 = hashlib.sha512()
   sha512.update(xor_func(secret,txid))
   b = long(sha512.hexdigest(),16)
   result = b % 65537
   if result<lessthan:
      print "win!"
   else:
      print "lose!"
			

Past Secrets

current time: Sat, 19 Aug 2017 18:24:54 +0000

Date Secret
August 18 2017 c805d4447f281649dd55f717418c499a1640eded1e76939aa94ec68b29b7e8a9
August 17 2017 693d43d2cb7eef5b16a9c7381fb3f563f0810d7193447cf1c372ff9308a930c0
August 16 2017 d6821a43067e8e188ef1c1ca5303845afa4b58963de8dbca3cca64ca43eb4150
August 15 2017 086efd822f7ebb8db19bd790b900f684d67b66352f25ecef9fbef61c8b143006
August 14 2017 059b3a61be8df61f1d064ff9e63e7e397e32033c0f1645e22ba8bb72c0514f18
August 13 2017 3ec748eaf185cec446f309ad427a7aa6d3f6ec2aa96586338671e8d73c2cf69e
August 12 2017 a3be0de22b4372d4779a8c312471fa59c262640b296a41ef9f786368326dd57c
August 11 2017 2c55c95bd2cda00f73e8dde6e6b6c1e5d48a9d6a8a66ef10f3c22eb0c641ed37
August 10 2017 8c18d67668e181e77dc39907cb40886e5521514389956cf6c77be9d06d4db3db
August 09 2017 1d78252deb50ae9194d00a7a153a506661d34b377b32ec70a6282f6057bcdf65
August 08 2017 761a80861206bd24bd5aed84f061521886990d14080ecb05c554dbbf211cc416
August 07 2017 e6f66d0e89d864ccc22c5a8d534c0d62b613e4f72d544bab3fa14e2c6b6fe9a1
August 06 2017 73bfb704bf1fa077f072f43b0380496baf621fe8ba4e2968fe503cc69d252e9a
August 05 2017 7ea6545405b065cc91c971950cd5c6e0aa0900d3e0e42af6d898d14c55c71fe2