whitelistMarkleTree

index.js

const { MerkleTree } = require("merkletreejs");
const keccak256 = require("keccak256");

// List of 7 public Ethereum addresses
let addresses = [
  "0x...",
  "0x1..",
  "0x2..",
  "0x3..",
  "0x4..",
  "0x5..",
  "0x6..",
  // ...
];

// Hash addresses to get the leaves
let leaves = addresses.map((addr) => keccak256(addr));

// Create tree
let merkleTree = new MerkleTree(leaves, keccak256, { sortPairs: true });
// Get root
let rootHash = merkleTree.getRoot().toString("hex");
console.log(rootHash);

console.log("---------");

// Pretty-print tree
console.log(merkleTree.toString());

// 'Serverside' code
let address = addresses[0];
let hashedAddress = keccak256(address);
let proof = merkleTree.getHexProof(hashedAddress);
console.log(proof);

// Check proof
let v = merkleTree.verify(proof, hashedAddress, rootHash);
console.log(v); // returns true