如何在多条链上使用 erc20 自定义代币？

Question

If erc20 tokens are deplopyed on ethereum and dapp is on polygon, we cannot use the following code

IERC20 token = IERC20(add);

So to use my tokens on polygon dapp as a payment, I can use bridging. If I send my tokens to polygon through bridging, bridging service will create a new contract on my behalf and I can use the new contract's address in my polygon dapp's contract file. (Is my concept on bridging right?)

But I feel like this is a little problematic approach and gas fees is also big issue here. So I was thinking if it is possible to deploy two contracts for my same tokens - one on ethereum and the other on polygon. Is it a bad practice? Will it create a coin inconsistency?

Please help. I am looking for an appropriate answer for a long time. Couldn't have found any yet.

Answer 1

Is it a bad practice?

Yes.

Will it create a coin inconsistency?

Yes.