# Transfer Aset

Mari kita bayangkan sejenak, jika saya bisa mengirim anda beberapa **BlockchainProgramming Coins**.\
Bagaimana cara anda dapat mengirim kembali koin tersebut?\
Jadi disini anda perlu membangun **ColoredCoin**.

Untuk contoh diatas, katakan saja misalkan saya ingin dapat mengeluarkan 10 asets yang telah saya terima dari address “nico”.\
Berikut ini caranya:

```javascript
{
  "transactionId": "fa6db7a2e478f3a8a0d1a77456ca5c9fa593e49fd0cf65c7e349e5a4cbe58842",
  "index": 0,
  "value": 600,
  "scriptPubKey": "76a914356facdac5f5bcae995d13e667bb5864fd1e7d5988ac",
  "redeemScript": null,
  "assetId": "AVAVfLSb1KZf9tJzrUVpktjxKUXGxUTD4e",
  "quantity": 10
}
```

Dan berikut kode untuk dapat inisiasi Colored Coin:

```csharp
var coin = new Coin(
    fromTxHash: new uint256("fa6db7a2e478f3a8a0d1a77456ca5c9fa593e49fd0cf65c7e349e5a4cbe58842"),
    fromOutputIndex: 0,
    amount: Money.Satoshis(2000000),
    scriptPubKey: new Script(Encoders.Hex.DecodeData("76a914356facdac5f5bcae995d13e667bb5864fd1e7d5988ac")));
BitcoinAssetId assetId = new BitcoinAssetId("AVAVfLSb1KZf9tJzrUVpktjxKUXGxUTD4e");
ColoredCoin colored = coin.ToColoredCoin(assetId, 10);
```

Kita akan mencoba melihat bagaimana beberapa layanan web atau kode lain bisa mendapatkan koin itu dengan mudah.\
Dan juga tentu saja, beberapa koin yang dibutuhkan untuk membayar fee.\
Transfer aset sebenarnya mudah dilakukan dengan **TransactionBuilder**.

```csharp
var book = BitcoinAddress.Create("1KF8kUVHK42XzgcmJF4Lxz4wcL5WDL97PB");
var nicoSecret = new BitcoinSecret("??????????");
var nico = nicoSecret.GetAddress(); //15sYbVpRh6dyWycZMwPdxJWD4xbfxReeHe

var forFees = new Coin(
    fromTxHash: new uint256("7f296e96ec3525511b836ace0377a9fbb723a47bdfb07c6bc3a6f2a0c23eba26"),
    fromOutputIndex: 0,
    amount: Money.Satoshis(4425000),
    scriptPubKey: new Script(Encoders.Hex.DecodeData("76a914356facdac5f5bcae995d13e667bb5864fd1e7d5988ac")));

TransactionBuilder builder = new TransactionBuilder();
var tx = builder
    .AddKeys(nicoSecret)
    .AddCoins(colored, forFees)
    .SendAsset(book, new AssetMoney(assetId, 10))
    .SetChange(nico)
    .SendFees(Money.Coins(0.0001m))
    .BuildTransaction(true);
Console.WriteLine(tx);
```

```javascript
{
  ….
  "out": [
    {
      "value": "0.00000000",
      "scriptPubKey": "OP_RETURN 4f410100010a00"
    },
    {
      "value": "0.00000600",
      "scriptPubKey": "OP_DUP OP_HASH160 c81e8e7b7ffca043b088a992795b15887c961592 OP_EQUALVERIFY OP_CHECKSIG"
    },
    {
      "value": "0.04415000",
      "scriptPubKey": "OP_DUP OP_HASH160 356facdac5f5bcae995d13e667bb5864fd1e7d59 OP_EQUALVERIFY OP_CHECKSIG"
    }
  ]
}
```

Transaksi juga sukses dilakukan:

![](/files/-LOmSgPd3rlPzmd58zTr)


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