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https://github.com/ethereum/solidity
Solidity, the Smart Contract Programming Language
https://github.com/ethereum/solidity
blockchain cpp ethereum hacktoberfest language programming-language smartcontracts solidity
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Solidity, the Smart Contract Programming Language
- Host: GitHub
- URL: https://github.com/ethereum/solidity
- Owner: ethereum
- License: gpl-3.0
- Created: 2015-08-17T12:27:26.000Z (over 9 years ago)
- Default Branch: develop
- Last Pushed: 2025-01-20T12:34:01.000Z (6 days ago)
- Last Synced: 2025-01-20T12:48:26.977Z (6 days ago)
- Topics: blockchain, cpp, ethereum, hacktoberfest, language, programming-language, smartcontracts, solidity
- Language: C++
- Homepage: https://soliditylang.org
- Size: 74.7 MB
- Stars: 23,747
- Watchers: 732
- Forks: 5,908
- Open Issues: 547
-
Metadata Files:
- Readme: README.md
- Changelog: Changelog.md
- Contributing: CONTRIBUTING.md
- License: LICENSE.txt
- Code of conduct: CODE_OF_CONDUCT.md
- Codeowners: .github/CODEOWNERS
- Security: SECURITY.md
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README
# The Solidity Contract-Oriented Programming Language
[](https://matrix.to/#/#ethereum_solidity:gitter.im)
[](https://gitter.im/ethereum/solidity)
[](https://forum.soliditylang.org/)
[](https://X.com/solidity_lang)
[](https://fosstodon.org/@solidity)
You can talk to us on Gitter and Matrix, tweet at us on X (previously Twitter) or create a new topic in the Solidity forum. Questions, feedback, and suggestions are welcome!
Solidity is a statically-typed, contract-oriented, high-level language for implementing smart contracts on the Ethereum platform.
For a good overview and starting point, please check out the official [Solidity Language Portal](https://soliditylang.org).
## Table of Contents
- [Background](#background)
- [Build and Install](#build-and-install)
- [Example](#example)
- [Documentation](#documentation)
- [Development](#development)
- [Maintainers](#maintainers)
- [License](#license)
- [Security](#security)
## Background
Solidity is a statically-typed curly-braces programming language designed for developing smart contracts
that run on the Ethereum Virtual Machine. Smart contracts are programs that are executed inside a peer-to-peer
network where nobody has special authority over the execution, and thus they allow anyone to implement tokens of value,
ownership, voting, and other kinds of logic.
When deploying contracts, you should use the latest released version of
Solidity. This is because breaking changes, as well as new features and bug fixes, are
introduced regularly. We currently use a 0.x version
number [to indicate this fast pace of change](https://semver.org/#spec-item-4).
## Build and Install
Instructions about how to build and install the Solidity compiler can be
found in the [Solidity documentation](https://docs.soliditylang.org/en/latest/installing-solidity.html#building-from-source).
## Example
A "Hello World" program in Solidity is of even less use than in other languages, but still:
```solidity
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.9.0;
contract HelloWorld {
function helloWorld() external pure returns (string memory) {
return "Hello, World!";
}
}
```
To get started with Solidity, you can use [Remix](https://remix.ethereum.org/), which is a
browser-based IDE. Here are some example contracts:
1. [Voting](https://docs.soliditylang.org/en/latest/solidity-by-example.html#voting)
2. [Blind Auction](https://docs.soliditylang.org/en/latest/solidity-by-example.html#blind-auction)
3. [Safe remote purchase](https://docs.soliditylang.org/en/latest/solidity-by-example.html#safe-remote-purchase)
4. [Micropayment Channel](https://docs.soliditylang.org/en/latest/solidity-by-example.html#micropayment-channel)
## Documentation
The Solidity documentation is hosted using [Read the Docs](https://docs.soliditylang.org).
## Development
Solidity is still under development. Contributions are always welcome!
Please follow the
[Developer's Guide](https://docs.soliditylang.org/en/latest/contributing.html)
if you want to help.
You can find our current feature and bug priorities for forthcoming
releases in the [projects section](https://github.com/ethereum/solidity/projects).
## Maintainers
The Solidity programming language and compiler are open-source community projects governed by a core team.
The core team is sponsored by the [Ethereum Foundation](https://ethereum.foundation/).
## License
Solidity is licensed under [GNU General Public License v3.0](LICENSE.txt).
Some third-party code has its [own licensing terms](cmake/templates/license.h.in).
## Security
The security policy may be [found here](SECURITY.md).