A new service for financial options has launched a beta website for nine different binary options, including gold, silver and crude oil, plus six foreign exchange pairs.

The offered currencies – euros, Australian dollars, New Zealand dollars, British pounds, yen, and Swiss francs – are all paired with the US dollar.

Different than previous binary option offerings, the new service – which is called UpDown – processes payments and payouts in bitcoin only.

With binary options, the trader selects the direction that the price of the underlying asset will move – either up ('call option') or down ('put option') – and purchases an option contract. This contract gives the buyer the right to exercise the option at the end of the specified time period, at which point the trader makes a return or loses the initial investment.

Binary options

are sometimes referred to as 'all-or-nothing options', 'digital options', or 'fixed return options' (FROs), which are traded on the American Stock Exchange.

More popular outside the US, foreign binary options are offered by individual brokers, rather than through an exchange, and they typically have a fixed payout and risk. The brokers earn their revenue from the percentage discrepancy between what they pay out on winning trades and what they collect from losing trades.

Most foreign binary options brokers are not legally allowed to solicit US residents unless that broker is registered with a US regulatory body, such as the Securities and Exchange Commission or the Commodities Futures Trading Commission.

First-generation binary options for bitcoin simply offer the BTC/USD currency pair as a trading vehicle, whereas second-generation operators also allow deposits and payouts in bitcoin. Coindesk first covered first-generation bitcoin binary options in June 2013.

Now, binary option brokers that trade bitcoin as an option instrument include anyoption, SetOption, TradeRush, and Bloombex-Options.

Fast and simple, the tradeable asset lists are extensive with durations of 60 seconds to one week. Payouts range between 60% to 85%, depending on the asset and option type. Top brokers will also provide news resources and trading tools.

Contracts for difference, or CFDs, differ from binary options in that they allow the use of leverage and the contract can be closed at any time, whereas binary options have a fixed expiry. Counterparty risk is a concern for both instruments, which is what the very short-term binary options utilizing the bitcoin block chain seek to alleviate.