⚠️ Note from Aspect Team ⚠️

This repo is a fork of the OpenZeppelin contracts. The reason for the fork was to have long string support for tokenURI on ERC721 contracts. This is required to show images on Aspect.

When OpenZeppelin support long strings TokenURIs for ERC721, we will defer the standard to OpenZeppelin and follow their standards.

Deploy TokenURI Compaitable ERC721 Cairo Contracts on Aspect

Deploy /cairo-contracts/openzeppelin/token/erc721/ERC721_Mintable_Burnable_LongTokenURI.cairo to StarkNet to have the NFTs available for trading on Aspect. Please see the Cairo documentation for more information on deploying contracts.

Need help? Contact us:

• Discord
• Twitter

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• Discord: 0xmonkeyy#0981
• Twitter: 0xmonkeyy

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• Discord: 0xSean#1534
• Twitter: 0xs34n

OpenZeppelin Cairo Contracts

A library for secure smart contract development written in Cairo for StarkNet, a decentralized ZK Rollup.

⚠️ WARNING! ⚠️

This is repo contains highly experimental code. Expect rapid iteration. Do not use in production.

Installation

First time?

Before installing Cairo on your machine, you need to install gmp:

sudo apt install -y libgmp3-dev # linux
brew install gmp # mac

If you have any troubles installing gmp on your Apple M1 computer, here’s a list of potential solutions.

Set up the project

Clone the repository

git clone git@github.com:OpenZeppelin/cairo-contracts.git

cd into it and create a Python virtual environment:

cd cairo-contracts
python3 -m venv env
source env/bin/activate

Install the Nile dev environment and then run install to get the Cairo language, a local network, and a testing framework.

pip install cairo-nile
nile install

Usage

Compile the contracts

nile compile

🤖 Compiling all Cairo contracts in the contracts directory
🔨 Compiling contracts/IAccount.cairo
🔨 Compiling contracts/Account.cairo
🔨 Compiling contracts/AddressRegistry.cairo
🔨 Compiling contracts/Initializable.cairo
🔨 Compiling contracts/Ownable.cairo
🔨 Compiling contracts/token/ERC721.cairo
🔨 Compiling contracts/token/ERC20.cairo
🔨 Compiling contracts/token/IERC20.cairo
✅ Done

Run tests

pytest

====================== test session starts ======================
platform linux -- Python 3.7.2, pytest-6.2.5, py-1.11.0, pluggy-1.0.0
rootdir: /home/readme/cairo-contracts
plugins: asyncio-0.16.0, web3-5.24.0, typeguard-2.13.0
collected 19 items                                                                                               

tests/test_Account.py ....                                 [ 21%]
tests/test_AddressRegistry.py ..                           [ 31%]
tests/test_ERC20.py ..........                             [ 84%]
tests/test_Initializable.py .                              [ 89%]
tests/test_Ownable.py ..                                   [100%]

Learn

Contract documentation

• Account
• ERC20
• ERC721
• Contract extensibility pattern
• Utilities

Cairo

• StarkNet official documentation
• Cairo language documentation
• Perama's Cairo by example
• Cairo 101 workshops

Nile

• Getting started with StarkNet using Nile
• How to manage smart contract deployments with Nile

Security

This project is still in a very early and experimental phase. It has never been audited nor thoroughly reviewed for security vulnerabilities. Do not use in production.

Please report any security issues you find to security@openzeppelin.org.

License

OpenZeppelin Cairo Contracts is released under the MIT License.