ZKsync

https://docs.zksync.io/
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ZKsync is a network of interoperable zero-knowledge rollup chains secured by ZK technology,...
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### ZKsync Foundry Configuration Example

Source: https://docs.zksync.io/zksync-network/tooling/foundry/installation

An example `foundry.toml` configuration file tailored for ZKsync projects, including settings for `zksolc`.

```toml
[profile.default]
src = 'src'
out = 'out'
libs = ['lib']

[profile.default.zksync]
compile = true
fallback_oz = true
mode = '3'

```

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### Create ZKsync Hardhat Solidity Project

Source: https://docs.zksync.io/zksync-network/tooling/hardhat/guides/getting-started

Initializes a new ZKsync Era project with a Hardhat template for Solidity development. This command automates the setup of necessary configurations and plugins.

```bash
npx zksync-cli create demo --template hardhat_solidity
```

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### Install Viem Package for ZKsync

Source: https://docs.zksync.io/zksync-network/sdk/js/viem

Installs the necessary Viem package for ZKsync integration. This is the first step to enable ZKsync functionalities within your project.

```bash
npm i viem
```

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### Install ZKsync Web3.js Plugin

Source: https://docs.zksync.io/zksync-network/sdk/js/web3js/getting-started

Install the Web3.js library and the specific Web3.js plugin for ZKsync using npm. This is the first step to enable ZKsync functionalities within your Web3.js project.

```bash
npm install web3 web3-plugin-zksync
```

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### Testing Smart Contracts with Forge on ZKsync

Source: https://docs.zksync.io/zksync-network/tooling/foundry/getting-started

Run tests written for your smart contracts on ZKsync using the `forge test --zksync` command. This assumes you have followed the Foundry testing guide for `foundry-zksync`.

```bash
forge test --zksync
```

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### Create ZKsync Hardhat Vyper Project

Source: https://docs.zksync.io/zksync-network/tooling/hardhat/guides/getting-started

Initializes a new ZKsync Era project with a Hardhat template for Vyper development. This command automates the setup of necessary configurations and plugins for Vyper smart contracts.

```bash
npx zksync-cli create demo --template hardhat_vyper
```

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### Start a ZKsync chain server

Source: https://docs.zksync.io/zk-stack/running/gateway-settlement-layer

Starts the server for a specific ZKsync chain. Ensure you replace `<YOUR_CHAIN_NAME>` with the correct chain identifier. Prerequisites are ignored.

```bash
zkstack server --ignore-prerequisites --chain <YOUR_CHAIN_NAME>
```

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### Install ZKsync CLI using npm

Source: https://docs.zksync.io/build/start-coding/zksync-101

Installs the ZKsync Command Line Interface globally using npm. This tool is essential for developing and interacting with ZKsync from your local machine and is used throughout the 101 series for building and deploying contracts.

```bash
npm install -g zksync-cli

```

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### Initialize and Configure ZKsync Wallet (Go Example)

Source: https://docs.zksync.io/zksync-network/sdk/go/api/accounts/wallet

This example demonstrates initializing a ZKsync Wallet using a private key and connecting it to both L2 and L1 networks. It shows the setup process including client initialization and error handling.

```go
PrivateKey := os.Getenv("PRIVATE_KEY")
ZkSyncEraProvider := "https://sepolia.era.zksync.dev"
EthereumProvider := "https://rpc.ankr.com/eth_sepolia"

client, err := clients.Dial(ZkSyncEraProvider)
if err != nil {
 log.Panic(err)
}
defer client.Close()

ethClient, err := ethclient.Dial(EthereumProvider)
if err != nil {
 log.Panic(err)
}
defer ethClient.Close()

wallet, err := accounts.NewWallet(common.Hex2Bytes(PrivateKey), client, ethClient)
if err != nil {
 log.Panic(err)
}

chainID, err := client.ChainID(context.Background())
if err != nil {
 log.Panic(err)
}
wallet, err = accounts.NewRandomWallet(chainID.Int64(), nil, nil)
if err != nil {
 log.Panic(err)
}

```

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### Install ZKsync CLI globally

Source: https://docs.zksync.io/zksync-network/tooling/hardhat/installation

Installs the ZKsync CLI globally using npm or yarn, which simplifies project setup and local testing for ZKsync development.

```npm
npm install -g zksync-cli
```

```yarn
yarn global add zksync-cli
```

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### Create ZKsync 101 project with EVM template

Source: https://docs.zksync.io/build/start-coding/zksync-101

Creates a new ZKsync 101 project using the EVM template. This command initializes a project structure suitable for EVM bytecode compilation and deployment on ZKsync. It requires the ZKsync CLI to be installed.

```bash
zksync-cli create zksync-101 --template zksync-101-evm

```

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