Bus accounts are responsible for distributing mining rewards. There are 8 busses total
to minimize write-lock contention and allow Solana to process mine instructions in parallel.
Config is a singleton account which manages program global variables.
Proof accounts track a miner’s current hash, claimable rewards, and lifetime stats.
Every miner is allowed one proof account which is required by the program to mine or claim rewards.
Treasury is a singleton account which is the mint authority for the ORE token and the authority of
the program’s global token account.