Layer Zero

LayerZero is an interoperability protocol designed to link blockchains, enabling developers to create fluid omnichain applications, tokens, and experiences. Utilizing immutable on-chain endpoints, a customizable Security Stack, and an open set of Executors, the protocol facilitates the transfer of censorship-resistant messages across chains.

Available on:

SKALE Europa

Implementation Example

The following example shows how to create and bridge an ERC-20 token between SKALE Europa testnet and Mumbai Testnet.

For more information check the github repository created by the SKALE team.

1. Repository clone

   git clone https://github.com/TheGreatAxios/skale-layerzero-examples.git && cd skale-layerzero-examples/oft-example

2. Package Install

   pnpm install

3. .env file

   1. Rename .env.example -> .env

   2. Choose your preferred means of setting up your deployer wallet/account

      MNEMONIC="test test test test test test test test test test test junk"
      or...
      PRIVATE_KEY="0xabc...def"

4. Contract deploy

   Note

   Please deploy the contract in the chains you want to enable bridging

   npx hardhat lz:deploy

   With the ERC-20 contracts deployed on the desired chains we can enable bridging those asserts.

   This is a two step process. The created examples are under the scripts folder and it shows the bridging tokens between two testnet chains Mumbai Testnet and SKALE Europa Testnet.

   Once you’ve finished configuring your OFT, you can open the messaging channel and connect your OFT deployment to different chains by calling setPeer.

5. Set Peer

   Generic Example

   npx hardhat setpeer --origin <origin_chain_name> --destination <destination_chain_name> --network <chain_where_tx_will_be_initiated>

   Set Peer on Europa

   npx hardhat setpeer --origin europa --destination mumbai --network europa

   Set Peer on Mumbai

   npx hardhat setpeer --origin mumbai --destination europa --network mumbai

6. Bridge

   After setting the peers you can now proceed you bridging the tokens.

   Generic Example

   npx hardhat bridge --origin <origin_chain_name> --destination <destination_chain_name> --amount <amount_to_bridge> --network <chain_where_tx_will_be_initiated>

   Bridge Europa to Mumbai

   npx hardhat bridge --origin europa --destination mumbai --amount 123 --network europa

   Bridge Mumbai to Europa

   npx hardhat bridge --origin mumbai --destination europa --amount 123 --network mumbai

Additional Layer Zero Documentation

Click here for the official documentation.