# Withdraw from Wallet - BitGo Offline Vault Multisig

Source: https://developers.bitgo.com/docs/withdraw-wallet-type-bitgo-offline-vault-multisig

## Overview

You initiate withdrawals from BitGo Offline Vault multisignature wallets by submitting transaction details to BitGo. BitGo uses the data you pass to construct an unsigned transaction that you take to the the [Offline Vault Console](/docs/ovc) (OVC), where wallet co-signers can apply their signature. After signing in the OVC, you upload the half-signed transaction to BitGo to enable wallet admins approvals. Once the transaction is half signed and approved, BitGo receives it for final signing and broadcasting to the blockchain.

## Prerequisites

* [Get Started](/docs/get-started-intro)
* [Create Wallets](/docs/wallets-create-wallets)
* [Create Whitelists](/docs/wallets-whitelists-create) (Optional)
* Contact support@bitgo.com to obtain access to the OVC.
* [Deposit Assets](/docs/deposit-assets)

## Cookbook

Need just the steps? Expand the cookbook below to get started:

<Cookbook slug="withdraw-bitgo-offline-vault-multisig" title="Withdraw - BitGo Offline Vault Multisig" />

## 1. Build Transaction

Build the transaction by specifying the transaction details and sending them to BitGo. The following example is shows the minimum required parameters for sending bitcoin.

>Endpoint: [Build a Transaction](/reference/v2wallettxbuild)

```shell cURL
export COIN="<ASSET_ID>"
export WALLET_ID="<YOUR_WALLET_ID>"
export ACCESS_TOKEN="<YOUR_ACCESS_TOKEN>"
export ADDRESS="<DESTINATION_ADDRESS>"
export AMOUNT="<AMOUNT_IN_BASE_UNITS>"

curl -X POST \
  https://app.bitgo-test.com/api/v2/$COIN/wallet/$WALLET_ID/tx/build \
  -H 'Content-Type: application/json' \
  -H "Authorization: Bearer $ACCESS_TOKEN" \
  -d '{
    "recipients": [
      {
        "amount": "'"$AMOUNT"'",
        "address": "'"$ADDRESS"'"
      }
    ]
  }'
```
```js JavaScript
let params = {
  recipients: [
    {
      amount: `<AMOUNT_IN_BASE_UNITS>`,
      address: `<DESTINATION_ADDRESS>`,
    },
  ],
};
wallet.prebuildTransaction(params).then(function (transaction) {
  // print transaction details
  console.log(JSON.stringify(transaction, null, 2));
});
```

#### Step Result

BitGo uses the data you pass to build an unsigned transaction. Save this JSON file to an SD card for transfer to the OVC. The following example builds a withdrawal of 10,000 sats of TBTC4.

```json JSON
{
  "txHex": "01000000010e4d3af014f9efe311062965d561b67f78a1759e7016605cd506ddd7041762d50000000000ffffffff02102700000000000017a9145a581567fd2a630e61e34a696ab3bb887972886d87ad0f010000000000225120850d0ab466d15cb1565dd528d4d9709f3e46f41d41fe6d94aa01378e6269839900000000",
  "txInfo": {
    "nP2SHInputs": 0,
    "nSegwitInputs": 1,
    "nOutputs": 2,
    "unspents": [
      {
        "chain": 10,
        "index": 5,
        "redeemScript": "0020510ded26d712922bbb61bc68ef6766f836a03527820cbdc8b1551914eb467daf",
        "witnessScript": "522103c10ac628c880629ed0fd2a0563a898f4882baca45e15668a4d3064cf1ea379882103e56f84be4460080618ef869bb7b07096880760f748ba23efab533c2359f923bd21020ae81372264b5eac5c9dc7fe0b9a32bad00771c3a2c71f6e2c971823c3182ed653ae",
        "id": "d5621704d7dd06d55c6016709e75a1787fb661d565290611e3eff914f03a4d0e:0",
        "address": "2N5bzKehiq63uqT9hKDVaPWm1LmrPbHDz2S",
        "value": 100000,
        "valueString": "100000"
      }
    ],
    "changeAddresses": [
      "tb1ps5xs4drx69wtz4ja655dfktsnulydaqag8lxm992qymcucnfswvspwdwxq"
    ],
    "walletAddressDetails": {
      "tb1ps5xs4drx69wtz4ja655dfktsnulydaqag8lxm992qymcucnfswvspwdwxq": {
        "chain": 41,
        "index": 3,
        "coinSpecific": {}
      }
    },
    "txHexes": {}
  },
  "feeInfo": {
    "size": 226,
    "fee": 20451,
    "feeRate": 90491,
    "feeString": "20451",
    "payGoFee": 0,
    "payGoFeeString": "0"
  },
  "debug": {
    "dimensions": {
      "nP2shInputs": 0,
      "nP2shP2wshInputs": 1,
      "nP2wshInputs": 0,
      "nP2trKeypathInputs": 0,
      "nP2trScriptPathLevel1Inputs": 0,
      "nP2trScriptPathLevel2Inputs": 0,
      "nP2shP2pkInputs": 0,
      "outputs": { "count": 2, "size": 75 }
    }
  },
  "coin": "tbtc4"
}
```

## 2. Sign Transaction

Upload the unsigned transaction returned in the prior step to the OVC and sign it there with your private key.

## 3. Send Transaction

Using the `txHex` obtained in the prior step, send the half-signed transaction to BitGo.

>Endpoint: [Send Half-Signed Transaction](/reference/v2wallettxsend)

```shell cURL
export COIN="<ASSET_ID>"
export WALLET_ID="<YOUR_WALLET_ID>"
export ACCESS_TOKEN="<YOUR_ACCESS_TOKEN>"

curl -X POST \
  https://app.bitgo-test.com/api/v2/$COIN/wallet/$WALLET_ID/tx/send \
  -H 'Content-Type: application/json' \
  -H "Authorization: Bearer $ACCESS_TOKEN" \
  -d '{
    "halfSigned": {
    "txHex": "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"
  }
}'
```
```js JavaScript
let params = {
  txHex:
    '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',
  otp: '0000000',
};
wallet.submitTransaction(params).then(function (transaction) {
  // print transaction status
  console.dir(transaction);
});
```

#### Step Result

If your withdrawal doesn't require approval, then BitGo receives the transaction for final signing with the BitGo key and broadcasting to the blockchain. If you [Create Policy Rules](/docs/wallets-whitelists-create) to require approvals on withdrawals, the transaction remains in a pending-approval status until a wallet admin approves it.

```json JSON (approval not required)
{
  "transfer": {
    "entries": [
      {
        "address": "2NAVwU9KtPyE4h3RyHkhbLgQQvrc4EuSXD3", // Sender address
        "wallet": "654ec786c07fe8dc0dcfe03916ec5bb0",
        "value": -100000,
        "valueString": "-100000"
      },
      {
        "address": "2Mw241n14gJx2PcK2kijidZ2BPGeJBdwp1A", // Receiver address
        "value": 10000,
        "valueString": "10000",
        "isChange": false,
        "isPayGo": false
      },
      {
        "address": "tb1pq9m0lqjg4lfa0rj9wzjjjumk3l6vecndt8wla5756ktre6h6fexqg7z0vq", // Change address that collects the UTXO
        "wallet": "654ec786c07fe8dc0dcfe03916ec5bb0",
        "value": 70013,
        "valueString": "70013",
        "isChange": true,
        "isPayGo": false
      }
    ],
    "id": "65528cde229f765c57a8f4d1eb762908",
    "coin": "tbtc4",
    "wallet": "654ec786c07fe8dc0dcfe03916ec5bb0",
    "walletType": "hot",
    "enterprise": "62c5ae8174ac860007aff138a2d74df7",
    "txid": "c68916ddc1672ec62c474ef0839ec479ad9b2dabc2249177ce6be6247f81dfe7",
    "txidType": "transactionHash",
    "height": 999999999,
    "heightId": "999999999-65528cde229f765c57a8f4d1eb762908",
    "date": "2023-11-13T20:53:51.445Z",
    "type": "send",
    "value": -29987,
    "valueString": "-29987",
    "intendedValueString": "-29987",
    "baseValue": -10000,
    "baseValueString": "-10000",
    "baseValueWithoutFees": -10000,
    "baseValueWithoutFeesString": "-10000",
    "feeString": "19987",
    "payGoFee": 0,
    "payGoFeeString": "0",
    "usd": -11.0275843085,
    "usdRate": 36774.55,
    "state": "signed",
    "instant": false,
    "isReward": false,
    "isFee": false,
    "tags": [
      "654ec786c07fe8dc0dcfe03916ec5bb0",
      "62c5ae8174ac860007aff138a2d74df7"
    ],
    "history": [
      { "date": "2023-11-13T20:53:51.444Z", "action": "signed" },
      {
        "date": "2023-11-13T20:53:50.646Z",
        "user": "62ab90e06dfda30007974f0a52a12995",
        "action": "created"
      }
    ],
    "signedDate": "2023-11-13T20:53:51.444Z",
    "vSize": 225,
    "metadata": [],
    "signedTime": "2023-11-13T20:53:51.444Z",
    "createdTime": "2023-11-13T20:53:50.646Z"
  },
  "txid": "c68916ddc1672ec62c474ef0839ec479ad9b2dabc2249177ce6be6247f81dfe7",
  "tx": "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",
  "status": "signed"
}
```
```json JSON (pending approval)
{
  "error": "triggered all transactions policy",
  "pendingApproval": {
    "id": "65529448bd87efe59c3b0156ddfce867", // The admin who approves the transaction needs this ID
    "coin": "tbtc4",
    "wallet": "654ec786c07fe8dc0dcfe03916ec5bb0",
    "enterprise": "62c5ae8174ac860007aff138a2d74df7",
    "creator": "62ab90e06dfda30007974f0a52a12995",
    "createDate": "2023-11-13T21:25:28.022Z",
    "info": {
      "type": "transactionRequest",
      "transactionRequest": {
        "requestedAmount": "10000",
        "fee": 20451,
        "sourceWallet": "654ec786c07fe8dc0dcfe03916ec5bb0",
        "policyUniqueId": "654ec786c07fe8dc0dcfe03f",
        "recipients": [
          {
            "address": "2N1UvKhtSHLUa9YomSH7n9YMFCkMG2pbmsQ",
            "amount": "10000",
            "_id": "65529448bd87efe59c3b0158"
          }
        ],
        "buildParams": {},
        "coinSpecific": {
          "tbtc4": {
            "txHex": "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"
          }
        }
      }
    },
    "state": "pendingApproval",
    "scope": "wallet",
    "userIds": [ // Admins who can approve the transaction
      "62ab90e06dfda30007974f0a52a12995",
      "621d08a634ad8a0007fcddffd7c429cc"
    ],
    "approvalsRequired": 1,
    "singleRunResults": [
      {
        "ruleId": "Custody Enterprise Transaction ID Verification",
        "triggered": false,
        "_id": "65529448bd87efe59c3b0157"
      }
    ],
    "resolvers": []
  },
  "triggeredPolicy": "654ec786c07fe8dc0dcfe03f205e2524"
}
```

## 4. Approve Transaction (Optional)

> 📘 **Note**
>
> You can't approve your own transactions - another admin must always approve your transactions.

>Endpoint: [Update Pending Approval](/reference/v2approvalupdate)

```shell cURL
export APPROVAL_ID="<APPROVAL_ID>"
export ACCESS_TOKEN="<YOUR_ACCESS_TOKEN>"
export OTP="<YOUR_OTP>"

curl -X PUT \
  https://app.bitgo-test.com/api/v2/pendingApprovals/$APPROVAL_ID \
  -H 'Content-Type: application/json' \
  -H "Authorization: Bearer $ACCESS_TOKEN" \
  -d '{
    "state": "approved",
    "otp": "'"$OTP"'"
  }'
```
```js JavaScript
const baseCoin = this.bitgoSDK.coin(initialPendingApproval.coin);
const pendingApproval = await baseCoin.pendingApprovals().get({ id: initialPendingApproval.id });
const result = await pendingApproval.approve(params);
```

#### Step Result

Once approved, BitGo rebuilds the half-signed transaction, applying the most up-to-date fees. BitGo then applies the final signature using the BitGo key and broadcasts the transaction to the blockchain.

```json
{
    "id": "65529448bd87efe59c3b0156ddfce867",
    "coin": "tbtc4",
    "wallet": "654ec786c07fe8dc0dcfe03916ec5bb0",
    "enterprise": "62c5ae8174ac860007aff138a2d74df7",
    "creator": "62ab90e06dfda30007974f0a52a12995",
    "createDate": "2023-11-13T21:25:28.022Z",
    "info": {
        "type": "transactionRequest",
        "transactionRequest": {
            "requestedAmount": "10000",
            "fee": 20451,
            "sourceWallet": "654ec786c07fe8dc0dcfe03916ec5bb0",
            "policyUniqueId": "654ec786c07fe8dc0dcfe03f",
            "recipients": [
                {
                    "address": "2N1UvKhtSHLUa9YomSH7n9YMFCkMG2pbmsQ",
                    "amount": "10000",
                    "_id": "65529448bd87efe59c3b0158"
                }
            ],
            "coinSpecific": {
                "tbtc4": {
                    "txHex": "010000000001010e4d3af014f9efe311062965d561b67f78a1759e7016605cd506ddd7041762d50000000023220020510ded26d712922bbb61bc68ef6766f836a03527820cbdc8b1551914eb467dafffffffff02102700000000000017a9145a581567fd2a630e61e34a696ab3bb887972886d87ad0f010000000000225120850d0ab466d15cb1565dd528d4d9709f3e46f41d41fe6d94aa01378e626983990500483045022100db45a8d94ee2144f7e29baa855d94a2bf0120707a7ab2fc93734ed94af972c460220558d00b91275aafc7805dfaaf9ab796adbe9f4e66dc467f7eb93b790671a323201000069522103c10ac628c880629ed0fd2a0563a898f4882baca45e15668a4d3064cf1ea379882103e56f84be4460080618ef869bb7b07096880760f748ba23efab533c2359f923bd21020ae81372264b5eac5c9dc7fe0b9a32bad00771c3a2c71f6e2c971823c3182ed653ae00000000"
                }
            },
            "validTransaction": "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",
            "validTransactionHash": "5ea8d2b93997ed9fa3597a2f3113817c8216f573a0278c2533bb5db50fdb0dff"
        }
    },
    "state": "approved",
    "scope": "wallet",
    "userIds": [
        "62ab90e06dfda30007974f0a52a12995",
        "621d08a634ad8a0007fcddffd7c429cc"
    ],
    "approvalsRequired": 1,
    "singleRunResults": [
        {
            "ruleId": "Custody Enterprise Transaction ID Verification",
            "triggered": false,
            "_id": "65529448bd87efe59c3b0157"
        }
    ],
    "resolvers": [
        {
            "user": "621d08a634ad8a0007fcddffd7c429cc",
            "date": "2023-11-13T21:44:27.794Z",
            "resolutionType": "pending"
        }
    ]
}
```

## Next

You can view your completed withdrawal in BitGo or on a blockchain explorer.

## See Also

* [API Reference: Build a Transaction](/reference/v2wallettxbuild)
* [API Reference: Update Pending Approval](/reference/v2approvalupdate)
* [API Reference: Sign Transaction](/reference/expresssigntx)