Wallets

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The Wallet object in a Nautilus program simply represents a Solana system account - an account owned by the System Program and created with an ED25519 keypair.

You can create system accounts in a variety of ways, and as long as you've registered the keypair's public address with the Solana network you've deployed your Nautilus program to, it will map to a valid Wallet object!

The most common way to create system accounts on Solana is through the CLI:

solana-keygen new

solana airdrop 1 --keypair ./path-to-keypair.json
# - or -
solana transfer 1 <NEW_WALLET_ADDRESS>

You can also create a system account using @solana/web3.js, or using a Solana program!

To create a system account in a Nautilus program, you can do the following:

• This method will create a system account with the transaction fee payer as the rent payer for this new account:

use nautilus::*;

#[nautilus]
mod program_nautilus {

    fn create<'a>(mut new_wallet: Create<'a, Wallet<'a>>) -> ProgramResult {

        new_wallet.create()
    }
}

• This method will create a system account and allow you to specify the rent payer for this new account:

use nautilus::*;

#[nautilus]
mod program_nautilus {

    fn create_with_payer<'a>(
        mut new_wallet: Create<'a, Wallet<'a>>,
        rent_payer: Signer<Wallet<'a>>,
    ) -> ProgramResult {

        new_wallet.create_with_payer(rent_payer)
    }
}

You can use system accounts in your program for whatever you want, including requiring their signature.

use nautilus::*;

#[nautilus]
mod program_nautilus {

    fn transfer<'a>(from: Signer<Wallet<'a>>, to: Mut<Wallet<'a>>, amount: u64) -> ProgramResult {

        from.transfer_lamports(to, amount)
    }
}