高盛要settup比特币trading desk，它自己要hold inventory也可能要帮助client“持有”比特币。保证"持有"100%安全的一个条件是时刻要有50%以上blockchain的voting power。这无形于相当于有个和比特币基础违背的"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