أرسل USDT على TRON.
بلا TRX للغاز.

/// Full-range CSPRNG bytes (each byte 0-255). We pass this to bip39
/// instead of its built-in generator, which draws bytes with
/// `nextInt(255)` and therefore never emits 0xFF - a small but real
/// bias that shaves the entropy below 128 bits.
static Uint8List _secureEntropy(int n) {
  final r = Random.secure();
  final out = Uint8List(n);
  for (var i = 0; i < n; i++) {
    out[i] = r.nextInt(256);
  }
  return out;
}

/// Fresh 12-word BIP39 mnemonic (128 bits of entropy).
static String generateMnemonic() =>
    bip39.generateMnemonic(strength: 128, randomBytes: _secureEntropy);