State

The x/bank module keeps state of the following primary objects:

1. Account balances

2. Denomination metadata

3. The total supply of all balances

4. Information on which denominations are allowed to be sent.

In addition, the x/bank module keeps the following indexes to manage the aforementioned state:

• Supply Index: 0x0 | byte(denom) -> byte(amount)

• Denom Metadata Index: 0x1 | byte(denom) -> ProtocolBuffer(Metadata)

• Balances Index: 0x2 | byte(address length) | []byte(address) | []byte(balance.Denom) -> ProtocolBuffer(balance)

• Reverse Denomination to Address Index: 0x03 | byte(denom) | 0x00 | []byte(address) -> 0

Params

The bank module stores it's params in state with the prefix of 0x05, it can be updated with governance or the address with authority.

• Params: 0x05 | ProtocolBuffer(Params)

// Params defines the parameters for the bank module.
message Params {
  option (gogoproto.goproto_stringer)       = false;
  repeated SendEnabled send_enabled         = 1;
  bool                 default_send_enabled = 2;
}