[Ethereum] How to accept Bitcoin payment in a smart contract? What would be the code for that

bitcoinblockchain-interoperationcontract-designcontract-development

I will create my personal token and I would like to be able to sell it for ETH and BTC. I know how to add the sell function for ETH, but how can I sell the tokens for BTC?

The ETH sell function I will use is the following: 

function sell(uint256 amount) {
        if (balanceOf[msg.sender] < amount ) throw;
        balanceOf[this] += amount;
        balanceOf[msg.sender] -= amount;
        msg.sender.send(amount * sellPrice);
        Transfer(msg.sender, this, amount);
}

Best Answer

This is not as easy as with ETH, since a contract cannot own a BTC address. However you can use services like http://btcrelay.org/ which allow you to watch a btc address.

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