Minting on Polygon mainnet

In this article, i would share the tricks i learn from doing bulk minting NFTs on Polygon mainnet.

1. If you have not subscribed to any Matic RPC plan, you can choose a fast RPC by:

using this endpoint

https://polygon-rpc.com

instead of

https://rpc-mumbai.maticvigil.com/v1/<api_key>

2. Set a higher gas price

You can get the current gas price by calling

const gasPrice = await web3.eth.getGasPrice();

and then set a higher gas price in call to smart contract methods

const sendOption = {
  from: defaultAccount,
  gasPrice: gasPrice * 1.4
};
await contractInst.methods.methodName(arg).send(sendOption);

3. Choose a not busy time to mint (when US is asleep)

4. If keep getting RPC timeout, call a smart contract read method using web3. It may help you to get access to the RPC endpoint.

5. If transaction is stuck in mempool:

In your Metamask go to Settings > Advanced > Turn on “Customize transaction nonce”

Then, send another transaction with the same nonce and higher gas price to overwrite the stuck transaction

That’s it.