Solidity
Solidity is a programming language for smart contracts on Ethereum. Developers use it to write rules that automatically run on the blockchain.
What is Solidity?
A smart contract is a program with predefined rules. It carries out an action once those rules are met. Solidity is the language developers use to write these programs.
After publication, the code runs on computers across the Ethereum network. A blockchain is a shared digital ledger. This makes a contract's operation visible, but understanding the code requires technical knowledge.
A published smart contract can no longer be changed. That makes careful programming and testing important: a bug in the code can have serious consequences.
An example of Solidity
Suppose an event organizer wants to sell a digital concert ticket. A smart contract says: whoever sends 1 ether automatically gets a ticket.
The organizer writes this rule in Solidity. As soon as someone sends 1 ether, the contract carries out the rule. No bank, website, or other intermediary is needed.
Why is Solidity important in crypto?
Solidity often comes up in news about Ethereum and applications that run on it. Examples include DeFi, where services for borrowing or trading run through code, as well as NFT projects and DAOs. A DAO is a group that can define rules, such as voting, in code.
Other networks that use Ethereum technology can also use Solidity. This means the same kind of code can be used across multiple networks.
A report that a project uses Solidity doesn't automatically mean it's safe. Smart contracts can contain bugs. That's why developers test the code extensively and often have it reviewed before it's published.
