- Every block in the block chain only pays out
90% 99.9% of its block reward. The other 10% 0.1% is kept on reserve in the block.
[
- The balance chain difficulty is
100X 1000X the transaction chain difficulty. - The node that solves a balance chain block recieves all of the reserved block rewards from the included transaction blocks.
/li]
[/list]
Under this scheme, the relative reward for mining in the two chains would likely vary over time. You probably want to make the expected reward per compute cycle equal for the two chains or you might see fluctuations in hashing power between them. Merged mining, like d'aniel suggested, is probably a better idea.