Will Casper be "backwards compatible" with currently issued tokens such as ERC20 tokens?

Question

With Casper now available for testing, does the protocol work with regular ERC20 tokens?

For example if Casper becomes the main protocol for the whole Ethereum network and the old PoW method is gone, will this effect tokens already issued?

If creating a token now that wants long-term functionality with the best Ethereum possible, should I be doing something different than creating a regular token, to ensure that it is fully functional with Casper in the future?

I appreciate input on this as I cannot find much information anywhere regarding Casper and "backwards compatibility".

Thank you.

Answer 1

Casper will not impact already deployed or new Smart Contracts(including ERC20 tokens).

Casper FFG is just a modification to the underlying Consensus protocol introducing a PoW/PoS hybrid model and quick and dependable finality;it doesn't affect Solidity or the EVM, so you don't need to make any modification to existing code.