Ethereum is different from Bitcoin, which only implements a simple Forth-like stack machine (on purpose). Ethereum's so-called "smart contracts" do appear to be

Ethereum is different from Bitcoin, which only implements a simple Forth-like stack machine (on purpose). Ethereum's so-called "smart contracts" do appear to be Buterin's unique invention. They're also behind all the scams, errors, and rug pulls that don't happen with Bitcoin because it lacks a technical mechanism for implementing them.