bitcoins from the future It is likely that the Galaxy Note 2 will be launched in August.  As it has taken two weeks to mine my very first bitcoin, it seems unlikely that I will have mined enough to purchase a Note upon release (unless the time between launch and release is about 15 years).

My plan was to bank on the idea that time travel will be possible, and so I would leave a calendar entry for my future self to travel back in time and credit my bitcoin account with the necessary funds that I have mined in the future (my future self can simply snooze the calendar entry for another decade if time travel is not yet possible).

However, it occurs to me that the bitcoin protocol is immune to this type of temporal shenanigans, as any future mined bitcoins are not in the block chain and so cannot be used in contemporary transactions.  Even if the source bitcoins were already generated, no transactions would exist that showed them to be mine.

I am impressed that our future selves cannot tamper with bitcoins in the past, but I wanted to confirm that I haven't missed anything.  Is there a workaround that my future self could employ so that they didn't have to convert to gold or diamonds first (considering some time travel techniques only permit living tissue and their contents to be transferred).
Your future self could memorize some SatoshiDice secrets after they are revealed.  This would allow him to win every dice bet he placed after travelling back in time, since knowledge of a day's secret allows one to determine whether a bet will win or not before placing the bet.

There is a theory that this has already happened.