ERC721 NFT Bridge from Ethereum to Polygon using fxPortal

This project aims to bridge ERC721 non-fungible tokens (NFTs) from the Ethereum network to Polygon (formerly Matic) network using fxPortal.

Smart Contract Compilation

To compile the smart contract, run the following command using Hardhat:

npx hardhat compile

Deployment on Goerli Test Network

To deploy the smart contract on the Goerli test network, use the following command:

npx hardhat run scripts/deploy.js --network goerli

Foundry Commands

Here are the explanations of the following Foundry commands:

Command 1

cast call $MAPPED_TOKEN "symbol()" --rpc-url $MUMBAI_URL

This command retrieves the symbol of the mapped token on the Mumbai test network.

Command 2

export M_ADDRS=$(cast wallet new | grep -o "Address:.*" | sed 's/Address: //')

This command creates a new wallet address and assigns it to the M_ADDRS environment variable.

Command 3

cast send $GTOKEN_ADDRS "approve(address, uint256)" $FX_ADDRS 1000 --rpc-url $GOERLI_URL --private-key $PRIVATE_KEY

This command approves the transfer of 1000 tokens from the GTOKEN_ADDRS address to the FX_ADDRS address on the Goerli network.

Command 4

cast send $FX_ADDRS "deposit(address, address, uint256, bytes)" $GTOKEN_ADDRS $M_ADDRS 1000 0x00 --rpc-url $GOERLI_URL --private-key $PRIVATE_KEY

This command initiates a deposit of 1000 tokens from the GTOKEN_ADDRS address to the M_ADDRS address on the Goerli network using fxPortal.

Command 5

cast send $FX_ADDRS "deposit(address, address, uint256, bytes)" $GTOKEN_ADDRS $M_ADDRS 1000 0x00 --rpc-url $GOERLI_URL --private-key $PRIVATE_KEY

This command is similar to Command 4 and performs another deposit of 1000 tokens from the GTOKEN_ADDRS address to the M_ADDRS address on the Goerli network using fxPortal.

Please note that the variables such as $MAPPED_TOKEN, $MUMBAI_URL, $GTOKEN_ADDRS, $FX_ADDRS, $GOERLI_URL, and $PRIVATE_KEY should be replaced with the appropriate values before executing these commands.