You need to backup the private keys in your bitcoin wallet.
Download bitcoin and set it up. I think I still have a few cents in my wallet. I'll send you a coin if I do.
And no, it's not "breakable" in that a whole host of servers maintain the chain of transactions.
Wait, what's a bitcoin wallet?
I wasn't looking to actually do this, just get a better understanding... mainly because one bitcoin is like $1k. If they were cheaper, I might try it out. I wouldn't know what to do with one if I bought one, though.
The bitcoin creation via mining is interesting... I just question the security of large amounts of cash equivalents existing in unsecured servers of pedestrians.