高盛要settup比特幣trading desk，它自己要hold inventory也可能要幫助client“持有”比特幣。保證"持有"100%安全的一個條件是時刻要有50%以上blockchain的voting power。這無形於相當於有個和比特幣基礎違背的"center”。

Goldman Is Setting Up a Cryptocurrency Trading Desk

https://www.bloomberg.com/news/articles/2017-12-21/goldman-is-said-to-be-building-a-cryptocurrency-trading-desk