Lightning Rod Solana

Lightning Rod Solana is the home of the Dapp Developer Kit (DDK) for Inco Lightning network on Solana.

To start working with Inco Lightning on Solana and the Lightning Rod template repository, work through the Quick Start section below.

Further documentation is linked below.

Quick Start

Prerequisites

We require recent versions of

• Rust (1.70+)
• Solana CLI (1.18+)
• Anchor (0.31+)
• Node.js (18+)
• Yarn

to be installed.

Install dependencies

To install the dependencies, run:

yarn install

Build the program

To build the Solana program, run:

anchor build

Running tests on Devnet

The tests run against Solana Devnet where the Inco Lightning infrastructure is deployed.

Make sure you have a Solana wallet configured with some devnet SOL:

# Create a new wallet (if needed)
solana-keygen new

# Set cluster to devnet
solana config set --url devnet

# Airdrop some SOL for testing
solana airdrop 2

Then run the tests:

# Run all tests
anchor test

# Run standard token tests only
yarn test:token

# Run Token 2022 tests only
yarn test:token2022

Testing a Confidential Token

An example of a confidential token using Inco Lightning is provided in programs/inco-token/.

The program implements:

• Encrypted token balances using Euint128 handles
• Confidential transfers, minting, and burning
• SPL Token compatible interface
• Token 2022 extensions with decimal validation

To test run:

yarn install
anchor build
anchor test

Program Structure

lightning-rod-solana/
├── programs/
│   └── inco-token/           # Confidential token program
│       ├── src/
│       │   ├── lib.rs        # Program entry point
│       │   ├── token.rs      # Core token operations
│       │   ├── token_2022.rs # Token 2022 extensions
│       │   └── ...
│       └── Cargo.toml
├── tests/
│   ├── inco-token.ts         # Standard token tests
│   └── inco-token-2022.ts    # Token 2022 tests
└── ...

Dependencies

Rust (Program)

• anchor-lang 0.31.1
• anchor-spl 0.31.1
• inco-lightning 0.1.2

TypeScript (Tests/Client)

• @coral-xyz/anchor
• @inco/solana-sdk
• @solana/web3.js