Here's What A Crypto Smart Contract Is And How It Works | Bankrate

Most smart contracts are written in a programming language called Solidity, according to Ryan Boder, core team lead at API3, a crypto technology company. “Solidity was created for Ethereum, the largest and most widely used blockchain for smart contracts.”

“What we often think of as cryptocurrency is actually the most simple form of a smart contract,” Boder says. “Cryptocurrency is a smart contract where the use case is to send and receive money or, more accurately, tokens. In that sense, smart contracts are a generalization of cryptocurrency that enable more use cases than just sending tokens back and forth.”

“If you want to do more in a trustless environment than just send money back and forth, you need smart contracts,” API3’s Boder says.