[Svekax]

Coinbase is a broker. They make money by charging a fee when you convert between currencies. Their customers purchase Bitcoin and then transfer the funds into a Bitcoin address that they generated locally.

Polychain Capital is a hedge fund that only accepts investments greater than $500k from investors wealthy enough to manage the risk. If op had something like this in mind, he wouldn't be gauging the interest of random people on HN. Still, I believe they're too tempting a target and it's only a matter of time before their holdings are stolen.

[tradersam]

Hey guess what! Coinbase is insured.[0][1]

[0]:https://support.coinbase.com/customer/portal/articles/166237...

[1]:https://www.coinbase.com/legal/insurance

[runeks]

So was BitPay: http://www.coindesk.com/bitpay-sues-insurer-after-losing-1-8...