Create bech32 vanity addresses for testing purposes

stride-vanity-address.ts

// pnpm init
// pnpm i -D bech32 ts-node @types/node
// npx ts-node stride-vanity-address.ts

import { bech32 } from "bech32";

// Debug: Test all possible values to find what maps to "1"
for (let i = 0; i < 32; i++) {
  const test = bech32.encode("stride", [i]);
  console.log(`Value ${i} maps to ${test.charAt(7)}`);
}

function createVanityStrideAddress(word: string): string {
  word = word.replace(/ /gi, "").toLowerCase();

  const alphabetMap: { [key: string]: number } = {
    a: 29,
    b: 26, // 6
    c: 24,
    d: 13,
    e: 25,
    f: 9,
    g: 8,
    h: 23,
    i: 31, // l
    j: 18,
    k: 22,
    l: 31,
    m: 27,
    n: 19,
    o: 15, // 0
    p: 1,
    q: 0,
    r: 3,
    s: 16,
    t: 11,
    u: 28,
    v: 12,
    w: 14,
    x: 6,
    y: 4,
    z: 2,
  };

  for (const char of word) {
    if (!(char in alphabetMap)) {
      console.error(
        `Character '${char}' cannot be represented in bech32 format`
      );
      process.exit(1);
    }
  }

  const mappedWord = word.split("").map((c) => alphabetMap[c]);
  const address = bech32.encode("stride", mappedWord);

  return address;
}

const address = createVanityStrideAddress("palmssweatykneesweakarmsareheavy");
console.log(address);