> For Ethereum, was/is it possible to sell your coins on the fork you're not interested in? Yes. There was no replay protection (transactions were valid on bot

> For Ethereum, was/is it possible to sell your coins on the fork you're not interested in? Yes. There was no replay protection (transactions were valid on both chains) but soon after the fork people created smart contracts that got initialized to a different state on each of the chains. So you could, e.g., send your coins to the smart contract which then would forward it to your address A on the first chain and to your address B on the second chain.