Polygon CDK Validium Contracts

Core Contracts for the Polygon CDK Validium

The cdk-validium-contracts repository contains the smart contract implementations designed for use with CDK chains configured with Validium.

Overview of Validium

For a full overview of the Polygon CDK Validium, please reference the CDK documentation.

The CDK Validium solution is made up of several components; start with the CDK Validium Node. For quick reference, the complete list of components are outlined below:

Component	Description
CDK Validium Node	Node implementation for the CDK networks in Validium mode
CDK Validium Contracts	Smart contract implementation for the CDK networks in Validium mode
CDK Data Availability	Data availability implementation for the CDK networks
Prover / Executor	zkEVM engine and prover implementation
Bridge Service	Bridge service implementation for CDK networks
Bridge UI	UI for the CDK networks bridge

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Important Note

The private keys and mnemonics included in this repository are intended solely for internal testing. Do not use them in production environments.

Prerequisites

• Node.js version: 16.x
• npm version: 7.x

Repository Structure

• contracts: Core contracts
  • PolygonZkEVMBridge.sol: Facilitates asset transfers between chains
    • PolygonZkEVMGlobalExitRoot.sol: Manages the global exit root on L1
    • PolygonZkEVMGlobalExitRootL2.sol: Manages the global exit root on L2
  • CDKValidium.sol: Consensus algorithm for Validium CDK chains
• docs: Specifications and useful resources
• test: Contract test suites

Activate Github Hook

To activate the GitHub hook, run the following command:

git config --local core.hooksPath .githooks/

Install

npm i

Run Tests

Execute the test suite with:

npm run test

Linting

To check for linting errors, run:

npm run lint

To automatically fix linting errors, run:

npm run lint:fix

Build Docker Image

To build the Docker image, run:

npm run docker:contracts

This will create a new Docker image named hermeznetwork/geth-cdk-validium-contracts, which includes a Geth node with the deployed contracts. The deployment output can be found at docker/deploymentOutput/deploy_output.json.

To run the Docker container, use:

docker run -p 8545:8545 hermeznetwork/geth-cdk-validium-contracts

Note

For testing purposes, the following private keys are being used. These keys are not intended for production use:

• Private key: 0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80
• Address: 0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266
• Private key: 0xdfd01798f92667dbf91df722434e8fbe96af0211d4d1b82bbbbc8f1def7a814f
• Address: 0xc949254d682d8c9ad5682521675b8f43b102aec4

License

The cdk-validium-contracts project is licensed under the GNU Affero General Public License free software license.