Thanks. I'm not sure I understood the answer given in the specific post you're liking to (or at least, I don't see how it answers my question). A following response linked to this story: https://www.ccn.com/bitcoin-atm-double-spenders-police-need-... which gives a pretty good answer.
There are 2 approaches to Bitcoin Network usage in play. Bitcoin Core team went with RBF(Replace-By-Fee) which gives rise to the double spending problem as the funds can be re-directed before a transaction gets in to a block. And Bitcoin Cash protocol implementation removed the RBF to support trust in 0-confirmation. There are even more optimizations in BCH implementation of Bitcoin, you can review it here https://cash.coin.dance/development
littlestymaar|6 years ago
nighthawk24|6 years ago