Xapo's primary deep cold storage vault is also located in Switzerland, with additional secure sites deployed around the globe. (bitcoinmagazine.com)
Xapo maintains over 97 % of all its customer's funds in deep cold storage, providing a higher level of security than most customers could provide for themselves. (blog.xapo.com)
Bitquence lets you build a diversified portfolio easily, safely, securely offering deep cold storage for peace of mind. (cryptoninjas.net)