Install solana CLI to your computer

Install SPL Token program. If you are using one of Linux distributions you will probably should install packets: gcc, libudev-dev, libssl-dev.

python3 and pip3 installed

install python requirements:

pip3 install -r requirements.txt

npm package manager if you'd like to deploy contracts using hardhat

Make sure you are on devnet solana:

solana config get

RPC URL should be https://api.devnet.solana.com

Evaluate command if not:

solana config set --url devnet

Create new solana account. You will be asked for passphrase (may skip this step by pressing Enter)

solana-keygen new -o ~/.config/solana/id.json --force

Airdrop SOLs to just created account:

solana airdrop 2

• Network Name: Neon Devnet
• New RPC URL: https://proxy.devnet.neonlabs.org/solana
• Chain ID: 245022926
• Currency Symbol (optional): NEON

Change current directory to neon-erc0-example

Generate keypair for new SPL token:

solana-keygen new -o test-token-mint.json --force

You will be asked for passphrase (may skip this step by pressing Enter) test-token-mint.json file now contains private key of your SPL token. Now we will extract it's public key to environment variable using solana tool:

export AWESOME_TOKEN_ADDRESS=$(solana address -k test-token-mint.json)

Create new SPL token by running command:

spl-token -u devnet create-token -- test-token-mint.json

Run deploy_wrapper.py script

export WRAPPER_ADDRESS=$(python3 deploy_wrapper.py)

Import just created token into Metamask. You can get it's address by command:

echo $WRAPPER_ADDRESS

Install JS requirements:

npm i

Compile contract

npx hardhat compile

Deploy contract

export WRAPPER_ADDRESS=$(npx hardhat run --network neonlabs scripts/deploy.js)

Import just created token into Metamask. You can get it's address by command:

echo $WRAPPER_ADDRESS

Create associated token account using token mint address got on previous step:

spl-token -u devnet create-account $AWESOME_TOKEN_ADDRESS

After succesfull execution of this command you will get address of your new token account and signature of the transaction

Mint some tokens to just created wallet:

spl-token -u devnet mint $AWESOME_TOKEN_ADDRESS 1000

Check balance

spl-token -u devnet balance $AWESOME_TOKEN_ADDRESS

• address of ERC20 wrapper got on step 'Creating ERC20 wrapper'
• amount

python3 deposit_token.py $WRAPPER_ADDRESS 10000000000

• address of ERC20 wrapper got on step 'Creating ERC20 wrapper'
• amount

python3 withdraw_token.py $WRAPPER_ADDRESS 1000000000