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: Tue, 20 Feb 2018 21:04:59 +0000

Date Secret
February 19 2018 b04e205c3aad1ae35d6210ecc07f11ebde252afade617e9a43fb3c1ac3c27f08
February 18 2018 c81887f88b00cf71cb1eece06f42f7ea4c83f57c252493ac5a53a0a3bdcd0870
February 17 2018 f379cbb41fa4a5a9bffe77b48502add44b3b5c629d64aa9a0dcaf81fc6ada6d7
February 16 2018 2c5b947961f993d07e7908953399cb26c7280950141b676972f433318c08d37b
February 15 2018 302c17b0c4c4765b69ff0a191426f076b5bf4e81295727e0b517a966ae6795ba
February 14 2018 088d1ac3aedd174789b5ec8c54301341fe1acb7639b32ddd2d9b86bf789ee347
February 13 2018 eda18420722b7d5218bf7a6e8c9d6016ec26603fc4257e6797348bb393d7016f
February 12 2018 bbb7e564889d04aa17d694fdb40be7800504d982b32a15f5f64b7189dbbf8ae6
February 11 2018 abf81ec6433f29c6528da2341bc5aad4f6fd397af10dbf16de551a12c805a50e
February 10 2018 4f7a57b46100388331b08479d373f25bae423eeb9ba899e0b96ed7631456d2ba
February 09 2018 78e0afbda45719c3a54c3e2c9994f1c902976be591c0d81d58347cc0ddaac5c1
February 08 2018 f9b1775fb08e914b9cdf64ba3fcf2f4718d782e502300185742253b84f7fbbc6
February 07 2018 1abfd9ddfad7bc6392ab4925a9285122f75ec06a72c0e41c14e6305dfc2ba6a0
February 06 2018 53dd096df44d529f44feea900c6e0060b267a3497f4b2e8e4a13ef557330d1ee