...which is why you should define debts in terms of some weighted (USD, EUR, Gold, BTC, ...) currency basket and then pay in Bitcoin using its "exchange rate" at that time.
One option: a volume-adjusted average of MtGox.com trades over the last K hours
Another: use 0.001 of the amount to buy options to convert X Bitcoin into the agreed upon amount of (USD, ...). Market-making HFT bots will compete, making X the most fair amount.
All this complexity could be handled by user-friendly software...
One option: a volume-adjusted average of MtGox.com trades over the last K hours
Another: use 0.001 of the amount to buy options to convert X Bitcoin into the agreed upon amount of (USD, ...). Market-making HFT bots will compete, making X the most fair amount.
All this complexity could be handled by user-friendly software...