module_bank

bank module

Introduction

The bank module maintains the state of two primary objects:

• Account balances by address;

• Total supply of tokens on the chain

bank module tracks and provides query support for the total supply of all assets used in the application. It also supports token transfer functionalities. Specifically, the total supply is updated whenever a token is:

• Minted, e.g. Token created by the mint module; or

• Burned, e.g. Token distorted by the slashing module.

Transactions and Queries

Transactions

tx bank send [from_key_or_address] [to_address] [amount] [network_id] - Send Funds

You can transfer tokens to a designated address by the tx bank send command. For example, we can send 10 CRO from address_a to address_b by

$ chain-maind tx bank send <address_a> <address_b> 10cro --chain-id <chain-id>

## Transaction payload##
{"body":{"messages":[{"@type":"/cosmos.bank.v1beta1.MsgSend","from_address"....}
confirm transaction before signing and broadcasting [y/N]: y

Queries

query bank balances [address] - Check the balance of a specified account

One can check the current balance of a specified account by:

$ chain-maind query bank balances <address> --output json | jq
    {
    "balances": [
        {
        "denom": "basecro",
        "amount": "[token_balance]"
        }
    ],
    "pagination": {
        "next_key": null,
        "total": "0"
    }
    }

query bank total - Check the total supply of the token

You can also check the current total supply of the token by:

$ chain-maind query bank total --output json | jq
    {
    "supply": [
        {
        "denom": "basecro",
        "amount": "[total_supply_amount]"
        }
    ]
    }

Appendix

bank module: Network Parameters and configuration

Key	Type	Example
SendEnabled	[]SendEnabled	[{denom: "basecro", enabled: true }]
DefaultSendEnabled	bool	true