docs: function getAddress (publicKey) {
  	var publicKeyHash = crypto.createHash('sha256').update(publicKey, 'hex').digest();
  	var buffer = new Buffer(new RIPEMD160().update(publicKeyHash).digest('hex'));
  	var payload = new Buffer(21);
  	payload.writeUInt8(81, 0);
  	buffer.copy(payload, 1);
  	return 'ON'+bs58check.encode(payload);
  }