Re: RollinCoin.com - bitcoin Head or Tail game [provably fair] WIN 300% in second!
Hi I bet on your site and didnt receive my win I won 2 X . My transaction https://blockchain.info/tx/97358c2e48ca8434714d84c1f5755cf7f02c1530712008d1dbf039e5f0221ef8
My number was both odd. I want my .004. Don't put money here until he pay because I win.
My number was both odd. I want my .004. Don't put money here until he pay because I win.
Hi,
You lose sir, please read provably fair.. we creating new provably fair system..
based on your provably fair system, that bet should be a winner because of 9 and 7 both being odd numbers unless you are trying to cheat to get free money from players on your site?
No cheat!
It posted on site:
"Sorry, temporarily this provably fair system not work. After hacker attack, we create new provably fair system.
Game works well and you can play now! Good luck!"
we soon add new provably fair and see it.
no cheat? if you are not cheating your players then can you show us your new provably fair system on how it works? and i wonder how could the hacker hack your site and provide winning hashes since it depends on the blockchain
no cheat!
thanks a lot Chemistry1988!
Assuming what you said on your provably fair page (https://web.archive.org/web/20160506034612/http://rollincoin.com/provably_fair.html) is true, your game is faulty. Players can create a transaction, choose not to broadcast it, check if it wins or not, repeat the process and broadcast only the winning transactions to the network.
you said: "your game is faulty"
What you mean?
It seems to me that you thought your players (or in general any bitcoin users that create a transaction) have no control on their TxID, which simply is not true. If you have no idea about my second sentence in my previous post, you'd better do some research on how the "createrawtransaction" and "signrawtransaction" APIs can be used to create a transaction without broadcasting it.
Cheater has generated win hash transactions use "createrawtransaction" and "signrawtransaction" APIs
To be more exact, I only pointed out the problem in the provably fair scheme the site uses (used?) that players could do what I described to make sure their bets will win. I don't know if players have done that or not.
It is why other onchain gambling sites such as luckybit have to use a daily secret (set by the site, hashes of the secrets revealed in the beginning, actual daily secret to be reveal after the end of that particular day) together with the bet TxID to determine the result of the bets.
Note to players on the site: The site is not provably fair until the site has announced their new provably fair scheme.