OpenZeppelin Contracts written in Cairo for StarkNet, a decentralized ZK Rollup

Last update: Jan 04, 2023

Overview

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.

Quickstart

A mashup between Cairo's quickstart and StarkWare's intro.

0. Install Cairo

We recommend working inside a python virtual environment, but you can also install the Cairo package directly. To create and enter the virtual environment, type:

python3.7 -m venv ~/cairo_venv
source ~/cairo_venv/bin/activate

Make sure the venv is activated – you should see (cairo_venv) in the command line prompt.

Make sure you can install the following pip packages: ecdsa, fastecdsa, sympy (using pip3 install ecdsa fastecdsa sympy). On Ubuntu, for example, you will have to first run:

sudo apt install -y libgmp3-dev

On Mac, you can use brew:

brew install gmp

Download the python package (cairo-lang-0.3.1.zip) from https://github.com/starkware-libs/cairo-lang/releases/tag/v0.3.1. To install it using pip, run:

pip3 install cairo-lang-0.3.1.zip

Cairo was tested with python3.7. To make it work with python3.6, you will have to install contextvars:

pip3 install contextvars

1. Clone the repo

git clone [email protected]:OpenZeppelin/cairo-contracts.git

Then cd into it and create a build directory:

cd cairo-contracts/
mkdir build

2. Compile the contracts

starknet-compile contracts/contract.cairo \
    --output build/contract_compiled.json \
    --abi build/contract_abi.json

3. Deploy to testnet

export STARKNET_NETWORK=alpha
starknet deploy --contract build/contract_compiled.json

4. Interact with it

starknet invoke \
    --address CONTRACT_ADDRESS \
    --abi build/contract_abi.json \
    --function increase_balance \
    --inputs 1234

The result should look like:

Invoke transaction was sent.
Contract address: 0x039564c4f6d9f45a963a6dc8cf32737f0d51a08e446304626173fd838bd70e1c
Transaction ID: 1

The following command allows you to query the transaction status based on the transaction ID that you got (here you’ll have to replace TRANSACTION_ID with the transaction ID printed by starknet invoke):

starknet tx_status --id TRANSACTION_ID

The possible statuses are:

NOT_RECEIVED: The transaction has not been received yet (i.e., not written to storage).
RECEIVED: The transaction was received by the operator.
PENDING: The transaction passed the validation and is waiting to be sent on-chain.
REJECTED: The transaction failed validation and thus was skipped.
ACCEPTED_ONCHAIN: The transaction was accepted on-chain.

Then we can query the balance:

starknet call \
    --address CONTRACT_ADDRESS \
    --abi build/contract_abi.json \
    --function get_balance

License

OpenZeppelin Cairo Contracts is released under the MIT License.

Comments

Feature/transfer-ownership-pattern-#275
Resolves #304. This PR implements code in the Ownable contract to introduce a two step transfer ownership process plus zero address checks.

This is optional as the original pattern is still present, however now contract owners can propose a new owner rather than directly transfer ownership. The new owner is required to accept the request before ownership is transferred. Both the owner and the proposed owner can cancel the request.

The PR contains:

updated ownable.sol contract with zero address checks added too.

updated mock Ownable contract in the test directory.
opened by ctrlc03 17
Reorganize contract directory structure

Base token contracts, their interfaces and presets are all thrown into the same folder today. We should think of a better way to organize files, with a focus on discoverability and ease of import paths declaration.
enhancement

opened by martriay 11
Add erc1155

Fixes #273.

This PR implements the ERC1155 library contract and an ERC1155_Minable_Burnable implementation for testing purposes (to expose the internal _mint and _burn methods). It features a suite of tests which leverage the utils for caching and can be run in parallel. This work began at nethermind in Dec, was continued at Circularise and has roughly tracked the main repo since then. Sorry it took so long, and many thanks for your useful discussions @andrew-fleming.

Please let me know of any changes needed and I'll try to get them done much sooner

opened by dewi-tim 9

Test failure when following the README

I have followed the README file and when I try to run tests with pytest I get the following error:

(env) [email protected] cairo-contracts % pytest
========================================================= test session starts =========================================================
platform darwin -- Python 3.8.7, pytest-6.2.5, py-1.10.0, pluggy-1.0.0
rootdir: /Users/user/dev/cairo-contracts
plugins: web3-5.24.0, hypothesis-6.24.0, eth-brownie-1.17.1, xdist-1.34.0, forked-1.3.0
collected 0 items / 5 errors                                                                                                          

=============================================================== ERRORS ================================================================
_______________________________________________ ERROR collecting tests/test_Account.py ________________________________________________
ImportError while importing test module '/Users/user/dev/cairo-contracts/tests/test_Account.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
../../.pyenv/versions/3.8.7/lib/python3.8/importlib/__init__.py:127: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
tests/test_Account.py:3: in <module>
    from starkware.starknet.testing.starknet import Starknet
E   ModuleNotFoundError: No module named 'starkware'

shouldn't nile install take care of the dependencies?

opened by poolpitako 9

erc20/library.cairo "Transfer" event param "_from" not compatible with Starknet Python testing library
📝 Details

with Starkware official testing Python package: starkware/starknet/testing/contract_utils.py line 100, it encodes processed StarknetTransaction with namedtuple. Thus, calling erc20 Transfer with current OZ event signature

@event func Transfer(_from : felt, to : felt, value : Uint256): end

will fail with ValueError: Field names cannot start with an underscore: '_from'

🔢 Code to reproduce bug

In Python, try calling Transfer with this pattern tx = await erc20_contract.transfer(10, dst.contract_address).invoke(src) given

erc20_contract = erc20 contract

src = source account contract

dst = destination account contract
opened by eddiexbank 8
ERC1155 Token
Fixes #273

This PR builds on previous ERC1155 work and abstracts standard into reusability.

We have also included tokens in their own dirs, as it was becoming very cluttered

This PR is a WIP, and do not expect it to be merged as-is.

Note:

Struct arrays are not supported yet, so felts* are used instead of Uint256 for token arrays. Apparently, this feature will be in the next release.
opened by ponderingdemocritus 8
`ERC721_burn` transfers control of token to non(Account)

The ERC721_burn function of the ERC721_base.cairo file attempts to clear approvals and delete the owner for a given tokenId. This attempt uses the pattern of setting the approval and owner address to be zero.

In the EVM this workflow fits in with its account model. But in this Startnet environment, functions can actually be invoked with caller the "zero" address when not routed through a contract such as Account.cairo.

This means that ERC721_burn actually makes the owner this "zero" address and now any user can seize control of this token by making calls not routed through such an Account.cairo contract.

I will push a PR promptly that should fix this issue.

opened by georgercarder 7
Increase the Nonce in account contract
When I try sending execute method in Account contract, if the transaction is failed, the nonce is not update and I can't transfer again

Problem I tried creating a transaction and sent it. It's failed then I can't call the transaction anymore, unless I call another transaction to increase the nonce, then come back again

Solution So I think we can create an increase nonce method, to pass in the current nonce and update the nonce to the next nonce? So I can increase the nonce and call execute again.
opened by ltdai010 7
Fix Wizard position in docs

Fixes #462. Moving the Wizard nav element right below Overview, and showing it in the same page from embedding script (as is done in Solidity contracts docs site).

opened by ericnordelo 6
Add multicall

Since this feature requires a list of messages [Message] and each Message contains a list of arguments as calldata, it cannot be completed until Cairo supports passing an array of structs or at a least nested array simulating one to external functions.

opened by martriay 6
Is the git tagging scheme applied as intended?

I see this PR was merged recently: https://github.com/OpenZeppelin/cairo-contracts/pull/493 But the result looks suspicious to me. E.g. browsing the repo at tag v0.5.0, the source file of IAccount has v0.4.0 specified in its SPDX comment.

opened by FabijanC 5
Support previous account versions
I recall having this conversation a few times offline and I now regret not having opened this issue earlier.

The probem

In order to check if a contract can accept tokens, the safeTransferFrom family of functions of ERC721 and ERC1155 checks among other things if a given contract is an account. To do so, it leverages ERC165 by returning TRUE when queried about a given interface ID, corresponding to accounts complying with the account interface.

The problem is that the account interface and therefore the ID changed a few times now (less with time though 🤞) and it resulted in some token contracts not recognizing either old or new account IDs, just the single ID of the version they were used in.

What to do

Although I'm not sure how important it is to fix this in the short term considering:

this problem only prevents tokens to be sent to certain receivers, no funds are at risk or locked

any solution we provide can just affect new ERC721/1155 deployments

many account implementations out there, probably most of them, are upgradeable and therefore can keep up with the latest account ID therefore already compatible with new 721/1155 deployments

there's no account ID changes in the horizon as of now

StarkNet regenesis is not that far away

But if we were to fix it anyway, we could have a helper is_account(address) function that checks for multiple account ids.
opened by martriay 1
explore Cairo 1.0

we should get familiar with the upcoming changes and get a clear picture of what it means for the project, breaking it down into smaller issues if necessary.

opened by martriay 0
make base test suites available in released package

since users are responsible for manually exposing all the methods of libraries such as ERC20, ERC721, etc., it could be useful to make our base test suites like Ownable, ERC20, or ERC721 available for them to check their implementations.

this could be either as a separate package or in the same one as the contracts library.

opened by martriay 0
Provide an ERC20 preset using access lib

Currently, all the ERC20 presets use Ownable. It would be great if you could provide one more preset that uses AccessControl as well.

To provide some context where this might be useful - I recently worked on an L1 <-> L2 bridge for a ERC20 token. When bridging from L1 -> L2, the L2 bridge contract (the one with @l1_handler) calls mint on the L2 ERC20 contract. Similarly, when bridging from L2 -> L1, the L2 bridge contract calls a custom burn function on the L2 ERC20 contract. To protect the minting and burning, I used the AccessControl library (since the bridge contract is not the owner of the ERC20 contract).

Even though it's not too difficult to build, I think having a preset with more granular access control will be helpful.

opened by milancermak 2
Improve account's `is_valid_signature`

Following up on #372, Cairo's starkware.cairo.common.signature now exports a check_ecdsa_signature function that returns instead of reverting, allowing us to implement the desired version of isValidSignature in account contracts.

https://github.com/starkware-libs/cairo-lang/blob/9889fbd522edc5eff603356e1912e20642ae20af/src/starkware/cairo/common/signature.cairo#L32-L34

opened by martriay 0

Releases(v0.6.0)

v0.6.0(Dec 28, 2022)
What's Changed

Added

ERC1155 by @martriay in https://github.com/OpenZeppelin/cairo-contracts/pull/525

UDC docs by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/526

Warning notice for direct github installations by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/524

Changed

Renamed isApprovedForAll return variable name (isApproved -> approved) in ERC721 by @martriay in https://github.com/OpenZeppelin/cairo-contracts/pull/525

Expanded dependent interfaces (e.g. IERC721.cairo now includes IERC165.cairo functions) by @martriay in https://github.com/OpenZeppelin/cairo-contracts/pull/525

.adoc files now taken into account by update_version.py script by @ericnordelo in https://github.com/OpenZeppelin/cairo-contracts/pull/535

Full Changelog: https://github.com/OpenZeppelin/cairo-contracts/compare/v0.5.1...v0.6.0
Source code(tar.gz)
Source code(zip)
v0.5.1(Nov 28, 2022)
What's Changed

Integrate test coverage with nile-coverage by @ericnordelo in https://github.com/OpenZeppelin/cairo-contracts/pull/494

Fix test implementation in ERC721BaseSuite.py by @Pilouche in https://github.com/OpenZeppelin/cairo-contracts/pull/512

Support Cairo 0.10.1 by @martriay in https://github.com/OpenZeppelin/cairo-contracts/pull/503

Remove version bump automation by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/520

New Contributors

@Pilouche made their first contribution in https://github.com/OpenZeppelin/cairo-contracts/pull/512

Full Changelog: https://github.com/OpenZeppelin/cairo-contracts/compare/v0.5.0...v0.5.1
Source code(tar.gz)
Source code(zip)
v0.5.0(Oct 25, 2022)
What's Changed

Fix: typos by @omahs in https://github.com/OpenZeppelin/cairo-contracts/pull/492

Fix CONTRIBUTING coding style by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/485

Import utils funcs from Nile/remove funcs from utils.py by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/450

Rename ReentrancyGuard methods by @martriay in https://github.com/OpenZeppelin/cairo-contracts/pull/482

Add deployer preset by @martriay in https://github.com/OpenZeppelin/cairo-contracts/pull/467

Removed syscall_ptr and pedersen_ptr from SafeUint256 functions by @msaug in https://github.com/OpenZeppelin/cairo-contracts/pull/496

Allow simulating calls in Account by @ericnordelo in https://github.com/OpenZeppelin/cairo-contracts/pull/486

New Contributors

@omahs made their first contribution in https://github.com/OpenZeppelin/cairo-contracts/pull/492

@msaug made their first contribution in https://github.com/OpenZeppelin/cairo-contracts/pull/496

Full Changelog: https://github.com/OpenZeppelin/cairo-contracts/compare/v0.4.0...v0.5.0
Source code(tar.gz)
Source code(zip)
v0.4.0(Oct 3, 2022)
What's Changed

Update RELEASING.md by @martriay in https://github.com/OpenZeppelin/cairo-contracts/pull/438

Fix linter lack of package.json by @martriay in https://github.com/OpenZeppelin/cairo-contracts/pull/448

Run docs locally and add Deploy Previews through Netlify by @ericnordelo in https://github.com/OpenZeppelin/cairo-contracts/pull/459

Bump to cairo v0.10 by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/449

Fix Wizard position in docs by @ericnordelo in https://github.com/OpenZeppelin/cairo-contracts/pull/463

Add integration steps to CONTRIBUTING.md by @ericnordelo in https://github.com/OpenZeppelin/cairo-contracts/pull/476

Fix class_hash redefinition error from IAccount.__validate_declare__ by @unparalleled-js in https://github.com/OpenZeppelin/cairo-contracts/pull/466

Document new preset style/add ERC20Burnable to preset list by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/477

Refactor tests for better coverage by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/473

Proxy initialization atomicity by @ericnordelo in https://github.com/OpenZeppelin/cairo-contracts/pull/443

Update documentation to Cairo v0.10 by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/472

New Contributors

@ericnordelo made their first contribution in https://github.com/OpenZeppelin/cairo-contracts/pull/459

@unparalleled-js made their first contribution in https://github.com/OpenZeppelin/cairo-contracts/pull/466

Full Changelog: https://github.com/OpenZeppelin/cairo-contracts/compare/v0.3.2...v0.4.0
Source code(tar.gz)
Source code(zip)
v0.4.0b(Sep 11, 2022)
Beta release with support for Cairo 0.10

What's Changed

Update RELEASING.md by @martriay in https://github.com/OpenZeppelin/cairo-contracts/pull/438

Fix linter lack of package.json by @martriay in https://github.com/OpenZeppelin/cairo-contracts/pull/448

Run docs locally and add Deploy Previews through Netlify by @ericnordelo in https://github.com/OpenZeppelin/cairo-contracts/pull/459

Bump to cairo v0.10 by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/449

New Contributors

@ericnordelo made their first contribution in https://github.com/OpenZeppelin/cairo-contracts/pull/459

Full Changelog: https://github.com/OpenZeppelin/cairo-contracts/compare/v0.3.2...v0.4.0b
Source code(tar.gz)
Source code(zip)
v0.3.2(Aug 29, 2022)
What's Changed

Create IAccessControl.cairo by @zoey-t in https://github.com/OpenZeppelin/cairo-contracts/pull/408

Ownable: split assertion checks in two statements by @achab in https://github.com/OpenZeppelin/cairo-contracts/pull/422

Fix docs for proxy view calls by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/423

Add ERC20Burnable preset by @koloz193 in https://github.com/OpenZeppelin/cairo-contracts/pull/252

New Contributors

@zoey-t made their first contribution in https://github.com/OpenZeppelin/cairo-contracts/pull/408

@achab made their first contribution in https://github.com/OpenZeppelin/cairo-contracts/pull/422

Full Changelog: https://github.com/OpenZeppelin/cairo-contracts/compare/v0.3.1...v0.3.2
Source code(tar.gz)
Source code(zip)
v0.3.1(Aug 11, 2022)
This patch release mainly removes the unneeded dependency on nile(https://github.com/OpenZeppelin/cairo-contracts/pull/419) thus preventing warning message when there's a version mismatch.

What's Changed

Update documentation links to 0.3.0 by @pscott in https://github.com/OpenZeppelin/cairo-contracts/pull/416

Update pinned tox deps, remove nile from setup.cfg by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/419

Fix docs example by @martriay in https://github.com/OpenZeppelin/cairo-contracts/pull/428

Fix account preset link in extensibility.adoc by @ivpavici in https://github.com/OpenZeppelin/cairo-contracts/pull/431

Automate docsite links bump by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/420

New Contributors

@ivpavici made their first contribution in https://github.com/OpenZeppelin/cairo-contracts/pull/431

Full Changelog: https://github.com/OpenZeppelin/cairo-contracts/compare/v0.3.0...v0.3.1
Source code(tar.gz)
Source code(zip)
v0.3.0(Aug 4, 2022)
Highlights

new docsite: https://docs.openzeppelin.com/contracts-cairo

revamped directory structure, and therefore import paths

new utility to deploy accounts

What's Changed

fix: remove unused imports by @ca11ab1e in https://github.com/OpenZeppelin/cairo-contracts/pull/400

Add AccessControl docs by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/368

style: update SPDX license identifiers by @ca11ab1e in https://github.com/OpenZeppelin/cairo-contracts/pull/399

Update ownable check to validate zero address by @JulissaDantes in https://github.com/OpenZeppelin/cairo-contracts/pull/398

Refactor directory structure by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/350

Bump Nile version to 0.7.1 by @EvolveArt in https://github.com/OpenZeppelin/cairo-contracts/pull/381

Fix setup.cfg version by @martriay in https://github.com/OpenZeppelin/cairo-contracts/pull/406

Integrate docsite by @martriay in https://github.com/OpenZeppelin/cairo-contracts/pull/396

Deploy account util by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/339

Update docsite links to match new docsite by @martriay in https://github.com/OpenZeppelin/cairo-contracts/pull/410

Fix docs example by @martriay in https://github.com/OpenZeppelin/cairo-contracts/pull/413

Add script to update version by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/405

New Contributors

@ca11ab1e made their first contribution in https://github.com/OpenZeppelin/cairo-contracts/pull/400

@EvolveArt made their first contribution in https://github.com/OpenZeppelin/cairo-contracts/pull/381

Full Changelog: https://github.com/OpenZeppelin/cairo-contracts/compare/v0.2.1...v0.3.0
Source code(tar.gz)
Source code(zip)
v0.2.1(Jul 13, 2022)
This release mainly fixes https://github.com/OpenZeppelin/cairo-contracts/issues/386, which rendered account contracts unusable on live networks.

What's Changed

Fix typo in tests/signers.py by @0xSachinK in https://github.com/OpenZeppelin/cairo-contracts/pull/380

Update Proxies.md by @Wave-95 in https://github.com/OpenZeppelin/cairo-contracts/pull/388

Fix account signature by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/387

Remove old security advisory from README by @martriay in https://github.com/OpenZeppelin/cairo-contracts/pull/391

Fix proxy assertion by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/394

Simplify paths for fetching contract classes in tests by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/377

Update extensibility pattern by @martriay in https://github.com/OpenZeppelin/cairo-contracts/pull/397

New Contributors

@0xSachinK made their first contribution in https://github.com/OpenZeppelin/cairo-contracts/pull/380

@Wave-95 made their first contribution in https://github.com/OpenZeppelin/cairo-contracts/pull/388

Full Changelog: https://github.com/OpenZeppelin/cairo-contracts/compare/v0.2.0...v0.2.1
Source code(tar.gz)
Source code(zip)
v0.2.0(Jul 1, 2022)
What's Changed

Key points:

Improved Extensibility pattern, based on namespaces

New accounts (improved library + new EthAccount preset)

AccessControl and ReentrancyGuard libraries

Support for Cairo 0.9.0

Full changelog:

dev: removing duplicate function by @milancermak in https://github.com/OpenZeppelin/cairo-contracts/pull/234

Set interface ids as constants by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/216

use tx_info.transaction_hash instead of hash_multicall in Account by @juniset in https://github.com/OpenZeppelin/cairo-contracts/pull/233

Fix pytest warnings, move event_loop to conftest.py by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/231

Update documentation by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/214

Fix decorator by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/243

Add contributing file by @JulissaDantes in https://github.com/OpenZeppelin/cairo-contracts/pull/230

Integrate safemath into token contracts by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/222

Add memoization to erc20 by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/217

Rename cairo contracts -> oz contracts for cairo by @martriay in https://github.com/OpenZeppelin/cairo-contracts/pull/248

Update readme by @martriay in https://github.com/OpenZeppelin/cairo-contracts/pull/245

Add parallel testing by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/235

Update contributing by @JulissaDantes in https://github.com/OpenZeppelin/cairo-contracts/pull/251

Implement a reentrancy guard by @JulissaDantes in https://github.com/OpenZeppelin/cairo-contracts/pull/236

Remove decorator, unused function, and import by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/253

dev: support for cairo-lang 0.8.1 in tests by @milancermak in https://github.com/OpenZeppelin/cairo-contracts/pull/260

remove src from import paths by @martriay in https://github.com/OpenZeppelin/cairo-contracts/pull/264

Update README.md by @JulissaDantes in https://github.com/OpenZeppelin/cairo-contracts/pull/255

Update links in docs by @ericglau in https://github.com/OpenZeppelin/cairo-contracts/pull/270

replace constants' TRUE and FALSE in favor of native ones by @martriay in https://github.com/OpenZeppelin/cairo-contracts/pull/265

fix: change initialized visibility to @view by @0xSidius in https://github.com/OpenZeppelin/cairo-contracts/pull/276

Prefer cairo syntax highlighting in Markdown files by @rootulp in https://github.com/OpenZeppelin/cairo-contracts/pull/278

More cairo syntax highlighting by @rootulp in https://github.com/OpenZeppelin/cairo-contracts/pull/280

Pin marshmallow and cairo-lang, gitignore node.json by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/286

Fix IAccount import by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/292

Reformat docs and fix ERC721 import example by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/284

Refactor erc20 around the _spendAllowance function by @Amxx in https://github.com/OpenZeppelin/cairo-contracts/pull/240

Add Solidity/Cairo upgrades comparison by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/272

Add namespace to ERC165 by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/298

Add namespace to Upgrades by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/300

dockerized testing by @koloz193 in https://github.com/OpenZeppelin/cairo-contracts/pull/299

Use Nile's Signer by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/283

Separate Initializable into lib/contract, integrate namespace by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/301

Update Account to namespace, fix docs by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/297

Integrate namespace into ReentrancyGuard by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/305

Integrate namespace and events to Pausable by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/310

Update extensibility pattern by @martriay in https://github.com/OpenZeppelin/cairo-contracts/pull/303

added pull request template by @koloz193 in https://github.com/OpenZeppelin/cairo-contracts/pull/316

Update cairo-lang in tox by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/325

Add parallel testing section to readme by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/320

Fix is_valid_signature decorator by @martriay in https://github.com/OpenZeppelin/cairo-contracts/pull/330

Move ERC165 (Introspection) docs to its own page by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/322

Add missing section to extensibility docs by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/332

Rename library constructors to initializers by @martriay in https://github.com/OpenZeppelin/cairo-contracts/pull/319

Integrate namespace in SafeMath by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/311

Refactor Ownable by @Amxx in https://github.com/OpenZeppelin/cairo-contracts/pull/244

Fix erc165 link by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/343

Fix Account reentrant signature reutilization bug by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/347

Add security advisory about Account vulnerability in README by @spalladino in https://github.com/OpenZeppelin/cairo-contracts/pull/349

Add return value to is_valid_signature by @pscott in https://github.com/OpenZeppelin/cairo-contracts/pull/338

Add error message for invalid nonce error by @jonasalexander in https://github.com/OpenZeppelin/cairo-contracts/pull/355

remove unnecessary alloc_locals in erc20 library by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/358

Optimize _remove_token_from_all_tokens_enumeration by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/326

Add SECURITY.md by @nikitastupin in https://github.com/OpenZeppelin/cairo-contracts/pull/353

Add markdown linter to CI by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/342

Fix erc721 transferFrom comment by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/341

Use of namespaces for ERC721 & ERC721Enumerable by @Amxx in https://github.com/OpenZeppelin/cairo-contracts/pull/296

Fix TestSigner pytest warning by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/367

Add RELEASING.md by @martriay in https://github.com/OpenZeppelin/cairo-contracts/pull/363

Add access docs for Ownable by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/352

Update to cairo v0.9.0 by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/364

Eth account support by @JulissaDantes in https://github.com/OpenZeppelin/cairo-contracts/pull/361

Fix misleading instructions in README by @andrew-fleming in https://github.com/OpenZeppelin/cairo-contracts/pull/371

Remove duplicate entry in .github/ISSUE_TEMPLATE/feature_request.md by @nikitastupin in https://github.com/OpenZeppelin/cairo-contracts/pull/375

Implement AccessControl by @martriay in https://github.com/OpenZeppelin/cairo-contracts/pull/373

Bump SPDX Licence ids to 0.2.0 by @martriay in https://github.com/OpenZeppelin/cairo-contracts/pull/376

New Contributors

@milancermak made their first contribution in https://github.com/OpenZeppelin/cairo-contracts/pull/234

@JulissaDantes made their first contribution in https://github.com/OpenZeppelin/cairo-contracts/pull/230

@ericglau made their first contribution in https://github.com/OpenZeppelin/cairo-contracts/pull/270

@0xSidius made their first contribution in https://github.com/OpenZeppelin/cairo-contracts/pull/276

@rootulp made their first contribution in https://github.com/OpenZeppelin/cairo-contracts/pull/278

@koloz193 made their first contribution in https://github.com/OpenZeppelin/cairo-contracts/pull/299

@spalladino made their first contribution in https://github.com/OpenZeppelin/cairo-contracts/pull/349

@pscott made their first contribution in https://github.com/OpenZeppelin/cairo-contracts/pull/338

@jonasalexander made their first contribution in https://github.com/OpenZeppelin/cairo-contracts/pull/355

@nikitastupin made their first contribution in https://github.com/OpenZeppelin/cairo-contracts/pull/353

Full Changelog: https://github.com/OpenZeppelin/cairo-contracts/compare/0.1.0...v0.2.0
Source code(tar.gz)
Source code(zip)
v0.1.0(Mar 23, 2022)

Source code(tar.gz)
Source code(zip)

Owner

OpenZeppelin

The standard for secure blockchain applications

GitHub Repository

Discord Token Creator 🥵

304 Jan 03, 2023

Generate Heroku-like random names to use in your python applications

HaikunatorPY Generate Heroku-like random names to use in your python applications. Installation pip install haikunator Usage Haikunator is pretty sim

116 Nov 15, 2022

Buscar y descargar canciones de YouTube automáticamente desde la web

🎶 DescargarCanciones 🎶 Buscar y descargar canciones o playlist de Spotify o YouTube automáticamente con todos los metadatos de la canciones en forma

1 Dec 20, 2021

Django3 web app that renders OpenWeather API data ☁️☁️

nz-weather For a live build, visit - https://brandonru.pythonanywhere.com/ NZ Openweather API data rendered using Django3 and requests ☀️ Local Run In

1 Oct 17, 2021

Flood discord webhooks

Webhook-Spammer Flood discord webhooks Asynchronous webhook spammer Fast & Efficient Usage - Use it with atleast 500 threads Put a valid webhook Use a

1 Apr 22, 2022

The WhatsApp lib

yowsup WARNING It seems that recently yowsup gets detected during registration resulting in an instant ban for your number right after registering wit

6.8k Jan 04, 2023

Simple Discord bot which logs several events in your server

logging-bot Simple Discord bot which logs several events in your server, including: Message Edits Message Deletes Role Adds Role Removes Member joins

1 Feb 14, 2022

A Python library for the Docker Engine API

Docker SDK for Python A Python library for the Docker Engine API. It lets you do anything the docker command does, but from within Python apps – run c

6.1k Jan 03, 2023

Melissa Songs is a telegram bot to easily find songs sending music snippets and search tracks 💃🏽🎵

Find songs on Telegram, like on Shazam... 😎 Open on telegram · Report Bug · Request Feature ⬇️ Installation To get a local copy installed and working

21 Nov 10, 2022

BoostIRC - IRC Bot which posts boosts to IRC

BoostIRC Quick Start git clone https://github.com/valcanobacon/BoostIRC.git cd B

7 Dec 23, 2022

A simple waybar module to display the status of the ICE you are currently in using the ICE Portals JSON API.

waybar-iceportal A simple waybar module to display the status of the ICE you are currently in using the ICE Portals JSON API. Installation Ensure pyth

7 Aug 26, 2022

Telegram bot untuk mencari jawaban dibrainly, support inline juga

Brainly-Telebot Bot Untuk Mencari Jawaban Dibrainly Jika ingin clone. Boleh kok Dibuat dengan python menggunakan MTproto Library. Yaitu Pyrogram Bot y

7 Mar 17, 2022

A Telegram Calculator to calculate your maths sums

CalculatorBot A Telegram Calculator to calculate your maths sums! Made by /Team

2 Dec 31, 2021

This is a scalable system that reads messages from public Telegram channels using Telethon and stores the data in a PostgreSQL database.

This is a scalable system that reads messages from public Telegram channels using Telethon and stores the data in a PostgreSQL database. Its original intention is to monitor cryptocurrency related ch

3 Jun 07, 2022

OpenZeppelin Contracts written in Cairo for StarkNet, a decentralized ZK Rollup

Related tags

Overview

OpenZeppelin Cairo Contracts

⚠️ WARNING! ⚠️

Quickstart

0. Install Cairo

1. Clone the repo

2. Compile the contracts

3. Deploy to testnet

4. Interact with it

License

Comments

The probem

What to do

Releases(v0.6.0)

v0.6.0(Dec 28, 2022)

What's Changed

v0.5.1(Nov 28, 2022)

What's Changed

New Contributors

v0.5.0(Oct 25, 2022)

What's Changed

New Contributors

v0.4.0(Oct 3, 2022)

What's Changed

New Contributors

v0.4.0b(Sep 11, 2022)

What's Changed

New Contributors

v0.3.2(Aug 29, 2022)

What's Changed

New Contributors

v0.3.1(Aug 11, 2022)

What's Changed

New Contributors

v0.3.0(Aug 4, 2022)

Highlights

What's Changed

New Contributors

v0.2.1(Jul 13, 2022)

What's Changed

New Contributors

v0.2.0(Jul 1, 2022)

What's Changed

Key points:

Full changelog:

New Contributors

v0.1.0(Mar 23, 2022)

Owner

OpenZeppelin

Discord Token Creator 🥵

Generate Heroku-like random names to use in your python applications

Buscar y descargar canciones de YouTube automáticamente desde la web

Django3 web app that renders OpenWeather API data ☁️☁️

Flood discord webhooks

The WhatsApp lib

Simple Discord bot which logs several events in your server

A Python library for the Docker Engine API

Melissa Songs is a telegram bot to easily find songs sending music snippets and search tracks 💃🏽🎵

BoostIRC - IRC Bot which posts boosts to IRC

A simple waybar module to display the status of the ICE you are currently in using the ICE Portals JSON API.

Telegram bot untuk mencari jawaban dibrainly, support inline juga

A Telegram Calculator to calculate your maths sums

This is a scalable system that reads messages from public Telegram channels using Telethon and stores the data in a PostgreSQL database.

EpikCord.py - This is an API Wrapper for Discord's API for Python

A tool that helps keeping track of your AWS quota utilization

Telegram Bot to check covid vaccine slot availability on CoWin site

Simple Reddit bot that replies to comments containing a certain word.

BSDotPy, A module to get a bombsquad player's account data.

Bringing Ethereum Virtual Machine to StarkNet at warp speed!