func Broadcast(tx types.Tx, broadcastRPC string) (*rtypes.Receipt, error) {
	client := cclient.NewClient(broadcastRPC, "JSONRPC")
	rec, err := client.BroadcastTx(tx)
	if err != nil {
		return nil, err
	}
	return &rec.Receipt, nil
}
func checkCommon(nodeAddr, pubkey, addr, amtS, nonceS string) (pub account.PubKey, addrBytes []byte, amt int64, nonce int64, err error) {
	if amtS == "" {
		err = fmt.Errorf("input must specify an amount with the --amt flag")
		return
	}

	if pubkey == "" && addr == "" {
		err = fmt.Errorf("at least one of --pubkey or --addr must be given")
		return
	}

	pubKeyBytes, err := hex.DecodeString(pubkey)
	if err != nil {
		err = fmt.Errorf("pubkey is bad hex: %v", err)
		return
	}

	addrBytes, err = hex.DecodeString(addr)
	if err != nil {
		err = fmt.Errorf("addr is bad hex: %v", err)
		return
	}

	amt, err = strconv.ParseInt(amtS, 10, 64)
	if err != nil {
		err = fmt.Errorf("amt is misformatted: %v", err)
	}

	if len(pubKeyBytes) > 0 {
		var pubArray [32]byte
		copy(pubArray[:], pubKeyBytes)
		pub = account.PubKeyEd25519(pubArray)
		addrBytes = pub.Address()
	}

	if nonceS == "" {
		if nodeAddr == "" {
			err = fmt.Errorf("input must specify a nonce with the --nonce flag or use --node-addr (or MINTX_NODE_ADDR) to fetch the nonce from a node")
			return
		}

		// fetch nonce from node
		client := cclient.NewClient(nodeAddr, "HTTP")
		ac, err2 := client.GetAccount(addrBytes)
		if err2 != nil {
			err = fmt.Errorf("Error connecting to node (%s) to fetch nonce: %s", nodeAddr, err2.Error())
			return
		}
		if ac == nil || ac.Account == nil {
			err = fmt.Errorf("unknown account %X", addrBytes)
			return
		}
		nonce = int64(ac.Account.Sequence) + 1
	} else {
		nonce, err = strconv.ParseInt(nonceS, 10, 64)
		if err != nil {
			err = fmt.Errorf("nonce is misformatted: %v", err)
			return
		}
	}

	return
}