Don't do it that way, you'll get screwed if the IRS ever audits you. That's treated as a couple of gifts, which screws up your basis. Since there isn't a recognized way to have a bitcoin agent sell it for you in another country while you retain ownership (unlike a stock broker) this looks like gifts and tax evasion, on top of the already-tricky world of cryptocurrency.
What should happen is, you buy for $10,000 and sell for $11,000; you have a $1000 gain which is reported as a capital transaction on schedule D and taxed as ordinary income if held for one year or less, or long term capital gains if the coin was held for more than one year.
