Solidity is a contract-oriented programming language designed to compile into EVM bytecode. A smart contract is code deployed on-chain that can maintain persistent state and react to external calls. The Solidity syntax defines: (1) compiler versioning via pragma, (2) contract structure (state variables, functions, events, modifiers), and (3) the interface between off-chain transactions and on-chain execution via function signatures.
Pragma and compilation determinism
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