> You can make a lightning transaction, drain your bitcoin wallet before it verifies, and no amount of watching the chain will get the seller back whatever they

> You can make a lightning transaction, drain your bitcoin wallet before it verifies, and no amount of watching the chain will get the seller back whatever they traded you for that transaction. Just because you identify the fraudulent transaction before it finally verifies doesn't mean that the fraud wasn't committed. Same with bad checks. No you cannot, again, that's not how it works. You commit funds to a channel on chain before you can spend funds in a channel. I don't think you understand how lightning works.