On chain scaking is defined in the whitepaper. Segwit breaks the legal and security aspects of the Bitcoin system. The Lightning Network (LN) is not peer-to-peer and thus is not Bitcoin. LN will not live up to the hype and is already two years late and is supposedly another two years away. This is much too late considering BTC is unuable with high fees and conjestion. Bitcoin Cash is here now and is usuable and will have some additional features onboarded very soon. I'm selling my remaining BTC for BCH.