Deposit and Withdraw Token

This tutorial explains how to deposit and withdraw funds on the InfraEVM parachain.

Before you begin

Before you begin, make sure to do the following:

• InfraEVM

Converting Addresses

InfraEVM Parachain uses two address systems:

• SS58 address

• H160 address

SS58 addresses are used in the Substrate layer, while H160 addresses are used in the EVM layer.

SS58 Address to H160 Address

ss58-to-h160

Converting an SS58 address to an H160 address is done as shown in the image above.

It involves decoding the SS58 address and using the first 20 bytes of the resulting 32-byte buffer as the H160 address.

A JavaScript file that implements this conversion is included in the repository.

Here's how to convert SS58 addresses to H160 addresses:

1. Open your computer's terminal shell.

2. Clone InfraEVM Parachain repository by running the following command:

   git clone https://github.com/InfraBlockchain/infra-evm-parachain

   This command clones the master branch.

3. Navigate to the root of the node template directory with the following command:

   cd infra-evm-substrate

   Create a new branch for your work:

   git switch -c my-learning-branch-yyyy-mm-dd

   Replace yyyy-mm-dd with your desired identification information. We recommend using a numeric year-month-day format. For example:

   git switch -c my-learning-branch-2023-03-01

4. Execute the following command to perform the address conversion:

   node ./utils --evm-address {ss58-address}

H160 Address to SS58 Address

h160-to-ss58

Converting an H160 address to an SS58 address is done as shown in the image above.

It involves combining a buffer composed of the string "evm:" and a buffer composed of the H160 address, then obtaining the hash value using the blake2 hash function and encoding the resulting hash value in SS58 format to obtain the SS58 address.

A JavaScript file that implements this conversion is included in the repository.

Here's how to convert H160 addresses to SS58 addresses:

1. Open your computer's terminal shell.

2. Clone InfraEVM Parachain repository by running the following command:

   git clone https://github.com/InfraBlockchain/infra-evm-parachain

   This command clones the master branch.

3. Navigate to the root of the node template directory with the following command:

   cd infra-evm-substrate

   Create a new branch for your work:

   git switch -c my-learning-branch-yyyy-mm-dd

   Replace yyyy-mm-dd with your desired identification information. We recommend using a numeric year-month-day format. For example:

   git switch -c my-learning-branch-2023-03-01

4. Execute the following command to perform the address conversion:

   node ./utils --ss58-address {evm-address}

Moving Assets from Substrate to EVM

1. Use the method explained above to obtain the SS58 address mapped to the H160 address to be used in EVM.

   node ./utils --ss58-address {evm-address}

2. Transfer assets to the obtained SS58 address.

   

   transfer-asset

   By default, InfraEVM Parachain is integrated to use asset 99 as the native token of the EVM.

3. Verify that it reflects in EVM wallets like MetaMask.

   

   metamask-balance

Moving Assets from EVM to Substrate

1. Use the method explained above to obtain the EVM address mapped to the SS58 address to be used in Substrate.

   node ./utils --evm-address {ss58-address}

2. Transfer assets to the obtained EVM address.

   

   transfer-asset
3. Access the InfraBlockchain Explorer and follow the steps below.

• Navigate to Developers - Extrinsics - evm palette and select the withdraw extrinsic.

  Configure it as shown below and dispatch the extrinsic:

  

  withdraw

  The SS58 account used for address conversion in step 1 should execute the extrinsic.

4. Check the events to confirm that the assets were successfully deposited.

   

   withdraw-success

Next Steps

• Deploying an ERC20 Token Contract