(Bloomberg) -- Tyler and Cameron Winklevoss will know within days whether they've won approval to begin offering their bitcoin-based ETF, with the digital currency's record rally hanging in the balance.

Officials from the SEC met with the twins on Feb. 14 to discuss their proposal for an ETF based on the digital currency, according to a short notice of the meeting published on Feb. 22. A decision is due by March 11. The 35-year-old twins want to trade the security on the Bats BZX Exchange.

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