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IBC transfer

Now that we have an active IBC-enabled RollApp, let's transfer tokens using an IBC transaction from your RollApp to the Dymension Hub faucet address at dym1g8sf7w4cz5gtupa6y62h3q6a4gjv37pgefnpt5.

Using this faucet, users will be able to request tokens to play around with your RollApp.


When making a faucet request, you will receive 500 * 10^{decimal-points} base tokens. To ensure a smooth token distribution process for your network, it is crucial to provide the faucet with an adequate amount of tokens (in multiples of 500).

Fund faucet

Input the following command to fund the Dymension Hub faucet with your RollApp token on froopyland testnet:

roller tx fund-faucet

It may take up to 15-30 minutes until your balance is available in the faucet

Run the following command to check the balance of your RollApp token on the Dymension Hub's froopyland faucet discord channel:

$balances dym1g8sf7w4cz5gtupa6y62h3q6a4gjv37pgefnpt5 <rollapp-id>

Users will be able to request tokens with the following command:

$request <user-address> <rollapp-id>

It is then recommended to utilize the Portal for IBC transfers to the respective RollApp.

Transfer IBC Tokens

To initiate an IBC transfer let's first find the source channel for our RollApp:

roller relayer status

The output should look similar to the following:

💈 Relayer Channels: src, channel-0 <-> channel-1, dst

The source channel, in this case channel-0, will be used in the following command and will be referred to as <src-channel>.

Next, let's make the actual transfer:


if the following command, if you've set your denom to be e.g XYZ, the value of the <base-denom> should be uXYZ where the value after the u is case sensitive.

rollapp_evm tx ibc-transfer transfer transfer <src-channel> <destination-address> 5000000000000000000000000<base-denom> --from rollapp_sequencer --keyring-backend test --home ~/.roller/rollapp --broadcast-mode block

The large amount of 0s for the RollApp denom are due to the fact that the base denom is defined as 10^18 for the denom as noted in the initialization section. This is similar to how Ethereum uses wei as the base unit and ether as the main unit.

Next lets go over on how to export your keys.