Native Token Transfers (NTT) Solana Deployment

Install Dependencies

Ensure you have the following dependencies installed:

• Rust
• Solana v1.18.10
• Anchor v0.29.0

Deploy NTT

Create a new NTT project (or use an existing NTT project):

ntt new my-ntt-deployment
cd my-ntt-deployment

Initialize a new deployment.json file, specifying the network:

TestnetMainnet

ntt init Testnet

ntt init Mainnet

Deploy Your Solana Token

Deploy an SPL Token

1. Generate a new Solana key pair to create a wallet:

   solana-keygen grind --starts-with w:1 --ignore-case
   

2. Set Solana configuration to use the new key pair:

   solana config set --keypair INSERT_PATH_TO_KEYPAIR_CREATED_IN_STEP1
   

3. Set the Solana configuration to use the default RPC URL for Devnet:

   solana config set -ud
   

4. Request an airdrop of two SOL and check the balance:

   solana airdrop 2 & solana balance
   

5. Install or update the SPL Token CLI:

   cargo install spl-token-cli
   

6. Create a new token with the SPL Token CLI:

   spl-token create-token
   

7. Create a new account for the token:

   spl-token create-account INSERT_ADDRESS_OF_TOKEN_CREATED_IN_STEP6
   

8. Mint 1000 tokens to the created account:

   spl-token mint INSERT_ADDRESS_OF_TOKEN_CREATED_IN_STEP6 1000
   

Note

NTT versions >=v2.0.0+solana support SPL tokens with transfer hooks.

Configuration and Deployment

Generate NTT Program Key Pair

When you deploy a Solana program, you need to hardcode the program ID (a Pubkey) into the program code. The NTT CLI allows you to do this seamlessly.

Generate a new NTT program key pair using:

solana-keygen grind --starts-with ntt:1 --ignore-case

Derive Token Authority

In this step, you'll derive the token authority Program Derived Address (PDA) of the newly generated NTT program ID:

ntt solana token-authority INSERT_YOUR_NTT_PROGRAM_KEY_PAIR

Set SPL Token Mint Authority

In this step, you'll set SPL token mint authority to the newly generated token authority PDA:

spl-token authorize INSERT_TOKEN_ADDRESS mint INSERT_DERIVED_PDA

Note

Please ensure that you are using Anchor CLI version 0.29.0. Running the deployment with a different version may cause compatibility issues.

If deploying to Solana in burning mode, set the mint authority for your SPL token to the NTT program ID you generated in the previous step.

Deploy NTT

Generate or export your payer key pair, then run:

ntt add-chain Solana --latest --mode burning --token INSERT_YOUR_SPL_TOKEN --payer INSERT_YOUR_KEYPAIR_JSON --program-key INSERT_YOUR_NTT_PROGRAM_KEYPAIR_JSON

Note

The add-chain command accepts an optional --solana-priority-fee flag, which sets the priority fee in microlamports. The default is 50000.

The NTT Solana program will then compile and deploy.

Configure NTT

The NTT CLI takes inspiration from git. You can run:

• ntt status - checks whether your deployment.json file is consistent with what is on-chain

• ntt pull - syncs your deployment.json file with the on-chain configuration and set up rate limits with the appropriate number of decimals, depending on the specific chain. For example:

  For Solana, the limits are set with 9 decimal places:

  "inbound": {
      "Sepolia": "1000.000000000" // inbound limit from Sepolia to Solana
  }
  

  For Sepolia (Ethereum Testnet), the limits are set with 18 decimal places:

  "inbound": {
      "Solana": "1000.000000000000000000" // inbound limit from Solana to Sepolia
  }
  

  This initial configuration ensures that the rate limits are correctly represented for each chain's token precision

Deploy

You can now push the deployment to the Solana network, specifying the key pair that will cover the gas fees:

ntt push --payer INSERT_YOUR_KEYPAIR_JSON

By default, NTT transfers to Solana support manual relaying, which requires the user to perform a transaction on Solana to complete the transfer. UI components such as Wormhole Connect support this out of the box. For automatic Wormhole relaying support on Solana, contact Wormhole contributors.