METACRAFTERS-POLYGON-MODULE-1

Building with Polygon Bridge

Project

For this project, I will deploy an NFT collection on the Ethereum blockchain
Map the collection to Polygon
Transfer assets over via the Polygon Bridge.

Dependencies

Generate a 5-item collection using DALLE 2 or Midjourney
Store items on IPFS using pinata.cloud
Deploy an ERC721 or ERC1155 to the Goerli Ethereum Testnet
You should have a promptDescription function on the contract that returns the prompt you used to generate the images
Map Your NFT Collection using Polygon network token mapper. Note: this isn’t necessary but helpful for visualization.
Write a hardhat script to batch mint all NFTs. Hint: ERC721A is optimal here.
Write a hardhat script to batch transfer all NFTs from Ethereum to Polygon Mumbai using the FxPortal Bridge
Approve the NFTs to be transferred
Deposit the NFTs to the Bridge
Test balanceOf on Mumbai

Contract deployement and Program Execution

clone the repository :

git clone https://github.com/ShivamGupta92/METACRAFTERS-POLYGON-MODULE-1.git

Run following commands after changeing directory

npm i

Add your environment variables in .env file.
This will generate a contract address that will get written in contractAddress.js in metadata folder. Paste that address into batchMint.js and also in approveDeposit.js

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

This will batch Mint all the nfts stored in pinata cloud

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

Time to map network and set bridging in motion

Go to https://mapper.polygon.technology/map and use deployed contract address to Map. Approve the mapping by paying required gas fee.

Wait for a good 20-30 minute for mapping to complete view it here: https://mapper.polygon.technology/

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

Running this will first approve the transfer to FxPortal bridge and then will transfer to Polygon Mumbai Finaly all the BirdOfParadise NFT's will be transfered from Ethereum to Polygon Network usiing fxPortal Bridge.

And Balance in Eth will become 0 and in Polygon Mumbai 5 NFT's