[EpicDice] 內心不夠亂，暫時停止營業

昨天開始，EpicDice暫時停止營業，官方discord宣布如下

@everyone, we have good news and bad news for you.

The bad news is, after some in-depth investigation we concluded our game is exploited due to we are using the simplest provably-fair mechanism. All the game result is solely relying on the blockchain transaction ID. We thought it was random and hard enough for bad actors to game the system but apparently, it wasn’t. We will have to halt the platform until a new mechanism is being implemented, and this is going to be the team’s top priority now.

The good news is, the house fund wasn’t completely drained so we are ready to come back strong as soon as the system is patched. And for those who previously suspect EpicDice is not playing fair, this is the best(or worst) example to prove our claim: Absolute fairness. Even in such event where the randomness of transaction ID is exploited, house is on the vulnerable side. We were truly running the best ever gambling service in term of everything we can.

This is not the end. We will come back stronger and better. Thanks for the support.

簡而言之 (本來寫比較長，但被SCT的submit系統搞丟文章 >_<)，被人利用算法機制的弱點突破了。

好奇的話，你可以參考這一篇：Epic Dice shut down due to witness cheating

簡單說一下，事情是這樣的。有位見證人mys，找出ED利用Steem txid產生數字過程的瑕疵，利用見證人的方便，送出自己希望的txid，大量用1 STEEM左右，贏得100 STEEM，大約進行27次後，被人舉報，平台因此暫停檢視，發現此一重大漏洞。

此事其實證明了團隊宣稱的fairness，亦即莊家與玩家都是平等的。只是這次，被掌握出塊的見證人以及略欠周詳的掌握txid產生過程細節不足，導致這個重大問題浮出檯面。其實是好事，我覺得。要長成大樹，就要接受風雨的摧殘嘛~~~~

所以，停機檢修，重新研發更好的流程，這團隊還是值得期待的。

如果你是對Steem區塊鏈運作很熟悉的高手，歡迎提供團隊好的建議，如何找出一個不能被單一或數位見證人操弄，而又具有亂數性質的數字來源呢？

歡迎挑戰! 有想法可以告訴我或是 @fr3eze，我個人提供 30 STEEMs 作為獎勵，如果你的想法被採納或是對於最後採納的方案有所幫助都可以 (由ED團隊認定)！