Edit: Party's over. It was fun while it lasted. It just occurred to me that transactions on the bitcoin block chain could be rebroadcast on the treazant block chain not only by the sender, but by anyone. And the opposite is also true, treazants produced before the block chain split which are spent after the split, could be rebroadcast on the bitcoin block chain. This wouldn't always be true, eventually divergent confirmation paths would stop the double receiving, but only after much potential harm. If I'm wrong, please let me know. Thanks for all your support. We had a good run.

Edit 2: It could still work if the encryption method was changed or a salt was added at and after block 210,000. Doing so would be good practice in case Bitcoin were ever close to being compromised in the distant future.