xianyuyaofanshen/packages/ccc-obfuscated-code/node_modules/validator/es/lib/isBtcAddress.js

import assertString from './util/assertString'; // supports Bech32 addresses

var btc = /^(bc1|[13])[a-zA-HJ-NP-Z0-9]{25,39}$/;
export default function isBtcAddress(str) {
  assertString(str);
  return btc.test(str);
}