It looks like a curly-brace language and reads deceptively like one, which is a trap for developers arriving from elsewhere. The execution environment is what is actually different: every operation costs money, storage is expensive enough to change how you design data, external calls can re-enter your function before it has finished, and there is no runtime to catch you.
The ecosystem does most of the load-bearing work. Audited standard implementations for tokens and access control are the default starting point precisely because writing them from scratch has a long history of going badly, and the development frameworks give you local chains, fuzzing and gas reporting as a matter of course.
Related terms
Smart contract
A program deployed to a blockchain that runs exactly as written, that anyone can call, and that usually cannot be changed afterwards.
Gas
The unit of computational cost on Ethereum-style chains: every operation has a price, and the caller pays it.
ERC-721
The Ethereum standard for non-fungible tokens: a contract interface where every token has its own distinct identity and owner.
Smart contract audit
An independent review of contract code before it goes live, looking for the ways it can be drained, locked or manipulated.
The bench this belongs to
BlockchainSolidity on Ethereum, Polygon, Base and Arbitrum. Anchor programs on Solana. Written with tests first, because a redeploy is not a hotfix once value is on the line.
