The Winklevoss twins filed with the Securities and Exchange Commission (SEC) to offer a Bitcoin exchange-traded fund (ETF) on the BATS exchange.

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There is a deadline and the SEC must make a decision by March 11th, 2017.

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Edit: If the decision is made up to one week after 11th March, that decision will apply when resolving this bet. There is a chance the decision will be made on the Monday 13th, rather than Saturday 11th.