Merge pull request #5 from matter-labs/skaminsky-sma-1454-open-source

[SMA-1454]: Open Source Work

CONTRIBUTING.md

@@ -0,0 +1,9 @@
+# Contribution Guidelines
+
+Thank you for considering helping out with the source code! We are extremely grateful for any consideration of
+contributions to this repository. However, at this time, we generally do not accept external contributions. This policy
+will change in the future, so please check back regularly for updates.
+
+For security issues, please contact us at [[email protected]](mailto:[email protected]).
+
+Thank you for your support in accelerating the mass adoption of crypto for personal sovereignty!

LICENSE-MIT

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2019 Matter Labs
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

@@ -1,6 +1,11 @@
 # zkSync 2.0: Smart Contracts
 
-zkSync 2.0 is a ZK rollup, a trustless protocol that uses cryptographic validity proofs to provide scalable and low-cost transactions on Ethereum. As all transactions are proven on the Ethereum mainchain, users enjoy the same security level as in Ethereum.
+[![Logo](zkSyncLogo.svg)](https://zksync.io/)
+
+zkSync 2.0 is a layer 2 rollup that uses zero-knowledge proofs to scale Ethereum without compromising on security or
+decentralization. Since it's EVM compatible (Solidity/Vyper), 99% of Ethereum projects can redeploy without refactoring
+or re-auditing a single line of code. zkSync 2.0 also uses an LLVM-based compiler that will eventually let developers
+write smart contracts in C++, Rust and other popular languages.
 
 This repository contains both L1 and L2 zkSync smart contracts. For their description see the [system overview](docs/Overview.md).
 
@@ -13,3 +18,11 @@ It is used as a submodule of a private repo. Compilation and test scripts should
 zkSync 2.0 contracts are distributed under the terms of the MIT license.
 
 See [LICENSE-MIT](LICENSE-MIT) for details.
+
+## Official Links
+
+- [Website](https://zksync.io/)
+- [GitHub](https://github.com/matter-labs)
+- [Twitter](https://twitter.com/zksync)
+- [Twitter for Devs](https://twitter.com/zkSyncDevs)
+- [Discord](https://discord.gg/nMaPGrDDwk)

ethereum/contracts/dev-contracts/RevertReceiveAccount.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: UNLICENSED
+// SPDX-License-Identifier: MIT
 
 pragma solidity ^0.8.0;
 

ethereum/contracts/dev-contracts/RevertTransferERC20.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: UNLICENSED
+// SPDX-License-Identifier: MIT
 
 pragma solidity ^0.8.0;
 

ethereum/contracts/dev-contracts/TestnetERC20Token.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: UNLICENSED
+// SPDX-License-Identifier: MIT
 
 pragma solidity ^0.8.0;
 

ethereum/contracts/dev-contracts/test/DiamondCutTest.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: UNLICENSED
+// SPDX-License-Identifier: MIT
 
 pragma solidity ^0.8.0;
 

ethereum/contracts/dev-contracts/test/DummyERC20BytesTransferReturnValue.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: UNLICENSED
+// SPDX-License-Identifier: MIT
 
 pragma solidity ^0.8.0;
 

ethereum/contracts/dev-contracts/test/DummyERC20NoTransferReturnValue.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: UNLICENSED
+// SPDX-License-Identifier: MIT
 
 pragma solidity ^0.8.0;
 

ethereum/contracts/dev-contracts/test/GovernanceFacetTest.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: UNLICENSED
+// SPDX-License-Identifier: MIT
 
 pragma solidity ^0.8.0;
 

ethereum/contracts/dev-contracts/test/MerkleTest.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: UNLICENSED
+// SPDX-License-Identifier: MIT
 
 pragma solidity ^0.8.0;
 

ethereum/contracts/dev-contracts/test/PriorityQueueTest.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: UNLICENSED
+// SPDX-License-Identifier: MIT
 
 pragma solidity ^0.8.0;
 

ethereum/contracts/dev-contracts/test/UnsafeBytesTest.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: UNLICENSED
+// SPDX-License-Identifier: MIT
 
 pragma solidity ^0.8.0;
 

ethereum/contracts/zksync/Plonk4VerifierWithAccessToDNext.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: MIT OR Apache-2.0
+// SPDX-License-Identifier: MIT
 
 pragma solidity ^0.8.0;
 

ethereum/contracts/zksync/Verifier.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: MIT OR Apache-2.0
+// SPDX-License-Identifier: MIT
 
 pragma solidity ^0.8.0;