Xapo is unknown to many, however it has secretly amassed a $10 Billion dollar fortune of mostly Bitcoin (BTC) holdings.  The startup has perfected the art of operating behind the scenes while targeting high net worth investors seeking safe storage for their crypto asset.

Xapo’s building structure is built with blast doors, and corridors with reinforced concrete. Xapo has also created a stealth network of underground vaults in five continents. One of the vaults is believed to be housed in a decommissioned Swiss Military bunker.

Argentina serial entrepreneur “Wences Casares” is the brains behind the Xapo. Mr. Casares has targeted high net worth investors sharing with them the extreme importance of safeguarding their holdings by using Xapo’s facility.

Xapo’s has remained elusive regarding the total number of bitcoins and other crypto currencies it currently safeguards. Clients themselves don’t even have an idea of the amount of crypto the startup houses. However, two clients believe Xapo could be holding up to $10 billion worth of the virtual currency.

If true, Xapo holdings could be storing 7% of the world’s global bitcoin supply. The holdings would also mean that the startup is sitting on deposits worth more than what 98% of banks in the U.S have. LinkedIn Corp co-founder Reid Hoffman and former Wall Street trader Mike Novogratz are both said to be backers of startup Xapo.

One of Xapo’s selling points is its ability to offer safe storage with private key code that lets people spend their coins at will. Xapo stores keys in a cold storage device in a mountainside with layers of electronic safeguards.

To be able to retrieve your Bitcoin from Xapo Vaults, clients have to wait for two days during which the company verifies the client’s identities and authenticates the request.  This security measure has caught the attention of many high net worth investors.