node script for predictable prefixed addresses deployed from factory

1. dependencies:

   npm install ethers@5.7.2 merkletreejs keccak256
   

Edit the following in the script:

• factoryAddress: deployed contract factory.
• initCode: bytecode of contract to be deployed.
• amount: in generate.js, edit to the amount you want generated. in this repo, it's set to 2: Go to line 37:" (let i = 0; i < 2; i++) { "
• desiredPrefix: prefix you want for your vanity contract addresses, e.g., 0xb00b5.

run to generate the addresses:

node generate.js

generates a file named brain_tokens_data.json (rename this file). includes:

• vanity addresses: CAs that start with your specified prefix.
• salts: values used to generate the addresses.
• merkle proofs: Proofs that verify the generated addresses.

entries in the output file provides unique vanity addresses that match desired prefix, w/ data for verification. this is meant to be passed to the factory with your custom implementation to be deployed FROM the factory