# Simple Transactions

{% hint style="info" %}
The minimum amount, or smallest UTXO, you can send in one transaction is 1 ADA.\
Set the amount to send in lovelaces. :sparkles: Remember **1 ADA** = **1,000,000 lovelaces.**
{% endhint %}

First, find the **tip** of the blockchain to set the **invalid-hereafter** parameter properly.

{% tabs %}
{% tab title="Block Producer Node" %}

```bash
currentSlot=$(cardano-cli query tip --mainnet | jq -r '.slot')
echo Current Slot: $currentSlot
```

{% endtab %}
{% endtabs %}

{% tabs %}
{% tab title="Block Producer Node" %}

```bash
amountToSend=10000000 
echo amountToSend: $amountToSend
```

{% endtab %}
{% endtabs %}

Set the destination address which is where you're sending funds to.

{% hint style="info" %}
*If you want to sent some ADA to the great CoinCashew team use: addr1qxhazv2dp8yvqwyxxlt7n7ufwhw582uqtcn9llqak736ptfyf8d2zwjceymcq6l5gxht0nx9zwazvtvnn22sl84tgkyq7guw7q*
{% endhint %}

{% tabs %}
{% tab title="Block Producer" %}

```bash
destinationAddress=$(cat payment.addr)
echo destinationAddress: $destinationAddress
```

{% endtab %}

{% tab title="Support CoinCashew" %}

```bash
destinationAddress=addr1qxhazv2dp8yvqwyxxlt7n7ufwhw582uqtcn9llqak736ptfyf8d2zwjceymcq6l5gxht0nx9zwazvtvnn22sl84tgkyq7guw7q
echo destinationAddress: $destinationAddress
```

{% endtab %}

{% tab title="geldtigerCold" %}

```bash
destinationAddress=$(cat geldtigerCold.addr)
echo destinationAddress: $destinationAddress
```

{% endtab %}
{% endtabs %}

Find your balance and **UTXOs**.

{% tabs %}
{% tab title="Block Producer" %}

```bash
cardano-cli query utxo \
    --address $(cat payment.addr) \
    --mainnet > fullUtxo.out

tail -n +3 fullUtxo.out | sort -k3 -nr > balance.out

cat balance.out

tx_in=""
total_balance=0
while read -r utxo; do
    in_addr=$(awk '{ print $1 }' <<< "${utxo}")
    idx=$(awk '{ print $2 }' <<< "${utxo}")
    utxo_balance=$(awk '{ print $3 }' <<< "${utxo}")
    total_balance=$((${total_balance}+${utxo_balance}))
    echo TxHash: ${in_addr}#${idx}
    echo ADA: ${utxo_balance}
    tx_in="${tx_in} --tx-in ${in_addr}#${idx}"
done < balance.out
txcnt=$(cat balance.out | wc -l)
echo Total ADA balance: ${total_balance}
echo Number of UTXOs: ${txcnt}
```

{% endtab %}
{% endtabs %}

Run the build-raw transaction command.

{% tabs %}
{% tab title="block producer node" %}

```bash
cardano-cli transaction build-raw \
    ${tx_in} \
    --tx-out $(cat payment.addr)+0 \
    --tx-out ${destinationAddress}+0 \
    --invalid-hereafter $(( ${currentSlot} + 10000)) \
    --fee 0 \
    --out-file tx.tmp
```

{% endtab %}
{% endtabs %}

Calculate the current minimum fee:

{% tabs %}
{% tab title="block producer node" %}

```bash
fee=$(cardano-cli transaction calculate-min-fee \
    --tx-body-file tx.tmp \
    --tx-in-count ${txcnt} \
    --tx-out-count 2 \
    --mainnet \
    --witness-count 1 \
    --byron-witness-count 0 \
    --protocol-params-file params.json | awk '{ print $1 }')
echo fee: $fee
```

{% endtab %}
{% endtabs %}

Calculate your change output.

{% tabs %}
{% tab title="block producer node" %}

```bash
txOut=$((${total_balance}-${fee}-${amountToSend}))
echo Change Output: ${txOut}
```

{% endtab %}
{% endtabs %}

Build your transaction.&#x20;

{% tabs %}
{% tab title="block producer node" %}

```bash
cardano-cli transaction build-raw \
    ${tx_in} \
    --tx-out $(cat payment.addr)+${txOut} \
    --tx-out ${destinationAddress}+${amountToSend} \
    --invalid-hereafter $(( ${currentSlot} + 10000)) \
    --fee ${fee} \
    --out-file tx.raw
```

{% endtab %}
{% endtabs %}

Copy **tx.raw** to your **cold environment.**\
For this purpose you can use `scp` (secure copy)

{% tabs %}
{% tab title="Local HOT environment" %}

```bash
#      PORT SOURCE (Block Producer)             TARGET (Local Mashine)
scp -P 9999 user@12.123.123.123:/home/tx.raw /home/
```

{% endtab %}
{% endtabs %}

Sign the transaction with the payment secret key.

{% tabs %}
{% tab title=" air-gapped offline machine" %}

```bash
cardano-cli transaction sign \
    --tx-body-file tx.raw \
    --signing-key-file payment.skey \
    --mainnet \
    --out-file tx.sign
```

{% endtab %}
{% endtabs %}

Copy **tx.signed** to your **hot environment.**\
For this purpose you can use `scp` (secure copy)

{% tabs %}
{% tab title="Local HOT environment" %}

```bash
#      PORT SOURCE (Local Mashine) TARGET (Block Producer)
scp -P 9999 /home/tx.signed user@12.123.123.123:/home/
```

{% endtab %}
{% endtabs %}

Send the signed transaction.

{% tabs %}
{% tab title="block producer node" %}

```bash
cardano-cli transaction submit \
    --tx-file tx.signed \
    --mainnet
```

{% endtab %}
{% endtabs %}

Check if the funds arrived.

{% hint style="info" %}
Please be patient. It could take up to 20min till the transactions are confirmed by the blockchain. This depents largely on the grade of congestion at the time where you have sent your transaction. You can check the block chain load at [Cardano Block Cahin Insights](https://datastudio.google.com/reporting/3136c55b-635e-4f46-8e4b-b8ab54f2d460/page/p_wxcw6g0irc).
{% endhint %}

{% tabs %}
{% tab title="block producer node" %}

```bash
cardano-cli query utxo \
    --address ${destinationAddress} \
    --mainnet
```

{% endtab %}
{% endtabs %}