State
The x/bank module keeps state of three primary objects, account balances, denom metadata and the
total supply of all balances.
- Supply: 
0x0 | byte(denom) -> byte(amount) - Denom Metadata: 
0x1 | byte(denom) -> ProtocolBuffer(Metadata) - Balances: 
0x2 | byte(address length) | []byte(address) | []byte(balance.Denom) -> ProtocolBuffer(balance)