# SpvVaultContract\<TX, Signer, ChainId, WithdrawalTX, Data>

Defined in: [atomiq-base/src/spv\_swap/SpvVaultContract.ts:20](https://github.com/atomiqlabs/atomiq-base/blob/df344bedbab9ab3de863e3c2d9246e90bd861d04/src/spv_swap/SpvVaultContract.ts#L20)

Represents an SPV vault (UTXO-controlled vault) contract, exposes operations on the vaults

## Type Parameters

| Type Parameter                                                                                                                                                   | Default type                                                                                                                            |
| ---------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------- |
| `TX`                                                                                                                                                             | `any`                                                                                                                                   |
| `Signer` *extends* [`AbstractSigner`](https://docs.atomiq.exchange/sdk-reference/api/atomiq-sdk/src/type-aliases/AbstractSigner.md)                              | [`AbstractSigner`](https://docs.atomiq.exchange/sdk-reference/api/atomiq-sdk/src/type-aliases/AbstractSigner.md)                        |
| `ChainId` *extends* `string`                                                                                                                                     | `string`                                                                                                                                |
| `WithdrawalTX` *extends* [`SpvWithdrawalTransactionData`](https://docs.atomiq.exchange/sdk-reference/api/atomiq-sdk/src/classes/SpvWithdrawalTransactionData.md) | [`SpvWithdrawalTransactionData`](https://docs.atomiq.exchange/sdk-reference/api/atomiq-sdk/src/classes/SpvWithdrawalTransactionData.md) |
| `Data` *extends* [`SpvVaultData`](https://docs.atomiq.exchange/sdk-reference/api/atomiq-sdk/src/classes/SpvVaultData.md)<`WithdrawalTX`>                         | [`SpvVaultData`](https://docs.atomiq.exchange/sdk-reference/api/atomiq-sdk/src/classes/SpvVaultData.md)<`WithdrawalTX`>                 |

## Properties

### chainId

```
readonly chainId: ChainId;
```

Defined in: [atomiq-base/src/spv\_swap/SpvVaultContract.ts:31](https://github.com/atomiqlabs/atomiq-base/blob/df344bedbab9ab3de863e3c2d9246e90bd861d04/src/spv_swap/SpvVaultContract.ts#L31)

Chain identifier string

## Methods

### checkWithdrawalTx()

```
checkWithdrawalTx(tx): Promise<void>;
```

Defined in: [atomiq-base/src/spv\_swap/SpvVaultContract.ts:237](https://github.com/atomiqlabs/atomiq-base/blob/df344bedbab9ab3de863e3c2d9246e90bd861d04/src/spv_swap/SpvVaultContract.ts#L237)

Checks if given withdrawal tx is valid and correctly parses on-chain, throws error when there is any issue with the validation

#### Parameters

| Parameter | Type           | Description |
| --------- | -------------- | ----------- |
| `tx`      | `WithdrawalTX` |             |

#### Returns

`Promise`<`void`>

***

### claim()

```
claim(

   signer, 

   vault, 

   txs, 

   synchronizer?, 

   initAta?, 

txOptions?): Promise<string>;
```

Defined in: [atomiq-base/src/spv\_swap/SpvVaultContract.ts:105](https://github.com/atomiqlabs/atomiq-base/blob/df344bedbab9ab3de863e3c2d9246e90bd861d04/src/spv_swap/SpvVaultContract.ts#L105)

Signs & sends transactions for claiming the funds from a specific vault

#### Parameters

| Parameter       | Type                                    | Description                                                                                                  |
| --------------- | --------------------------------------- | ------------------------------------------------------------------------------------------------------------ |
| `signer`        | `Signer`                                | Signer to use for the transaction                                                                            |
| `vault`         | `Data`                                  | Vault to claim from                                                                                          |
| `txs`           | `object`\[]                             |                                                                                                              |
| `synchronizer?` | `RelaySynchronizer`<`any`, `TX`, `any`> | Optiona synchronizer to be used if BTC relay contract is not synced up to the required blockheight           |
| `initAta?`      | `boolean`                               | Whether to initialize a token account if it doesn't exist (applies to e.g. Solana, with token specific ATAs) |
| `txOptions?`    | `TransactionConfirmationOptions`        | Transaction options                                                                                          |

#### Returns

`Promise`<`string`>

***

### createVaultData()

```
createVaultData(

   owner, 

   vaultId, 

   utxo, 

   confirmations, 

tokenData): Promise<Data>;
```

Defined in: [atomiq-base/src/spv\_swap/SpvVaultContract.ts:140](https://github.com/atomiqlabs/atomiq-base/blob/df344bedbab9ab3de863e3c2d9246e90bd861d04/src/spv_swap/SpvVaultContract.ts#L140)

Creates vault data for a new vault

#### Parameters

| Parameter       | Type                   | Description                                                                          |
| --------------- | ---------------------- | ------------------------------------------------------------------------------------ |
| `owner`         | `string`               | Vault owner                                                                          |
| `vaultId`       | `bigint`               | Vault ID                                                                             |
| `utxo`          | `string`               | Utxo on which to assign the vault initially                                          |
| `confirmations` | `number`               | Required number of bitcoin confirmations to be able to withdraw funds from the vault |
| `tokenData`     | `SpvVaultTokenData`\[] | Data about the tokens in the vault                                                   |

#### Returns

`Promise`<`Data`>

***

### deposit()

```
deposit(

   signer, 

   vault, 

   rawAmounts, 

txOptions?): Promise<string>;
```

Defined in: [atomiq-base/src/spv\_swap/SpvVaultContract.ts:59](https://github.com/atomiqlabs/atomiq-base/blob/df344bedbab9ab3de863e3c2d9246e90bd861d04/src/spv_swap/SpvVaultContract.ts#L59)

Signs & sends transactions for depositing funds to a specific spv vault

#### Parameters

| Parameter    | Type                             | Description                                    |
| ------------ | -------------------------------- | ---------------------------------------------- |
| `signer`     | `Signer`                         | Signer to use for the transaction (can be any) |
| `vault`      | `Data`                           | Vault to deposit to                            |
| `rawAmounts` | `bigint`\[]                      | Raw amounts to deposit (these are unscaled)    |
| `txOptions?` | `TransactionConfirmationOptions` | Transaction options                            |

#### Returns

`Promise`<`string`>

***

### fromOpReturnData()

```
fromOpReturnData(data): object;
```

Defined in: [atomiq-base/src/spv\_swap/SpvVaultContract.ts:253](https://github.com/atomiqlabs/atomiq-base/blob/df344bedbab9ab3de863e3c2d9246e90bd861d04/src/spv_swap/SpvVaultContract.ts#L253)

Parses withdrawal params from OP\_RETURN data

#### Parameters

| Parameter | Type     | Description                                                   |
| --------- | -------- | ------------------------------------------------------------- |
| `data`    | `Buffer` | data as specified in the OP\_RETURN output of the transaction |

#### Returns

`object`

| Name             | Type        | Defined in                                                                                                                                                                         |
| ---------------- | ----------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `executionHash?` | `string`    | [atomiq-base/src/spv\_swap/SpvVaultContract.ts:253](https://github.com/atomiqlabs/atomiq-base/blob/df344bedbab9ab3de863e3c2d9246e90bd861d04/src/spv_swap/SpvVaultContract.ts#L253) |
| `rawAmounts`     | `bigint`\[] | [atomiq-base/src/spv\_swap/SpvVaultContract.ts:253](https://github.com/atomiqlabs/atomiq-base/blob/df344bedbab9ab3de863e3c2d9246e90bd861d04/src/spv_swap/SpvVaultContract.ts#L253) |
| `recipient`      | `string`    | [atomiq-base/src/spv\_swap/SpvVaultContract.ts:253](https://github.com/atomiqlabs/atomiq-base/blob/df344bedbab9ab3de863e3c2d9246e90bd861d04/src/spv_swap/SpvVaultContract.ts#L253) |

***

### frontLiquidity()

```
frontLiquidity(

   signer, 

   vault, 

   realWithdrawalTx, 

   withdrawSequence, 

txOptions?): Promise<string>;
```

Defined in: [atomiq-base/src/spv\_swap/SpvVaultContract.ts:81](https://github.com/atomiqlabs/atomiq-base/blob/df344bedbab9ab3de863e3c2d9246e90bd861d04/src/spv_swap/SpvVaultContract.ts#L81)

Signs & sends transactions for fronting liquidity for a specific withdrawal btc transaction

#### Parameters

| Parameter          | Type                             | Description                                                                                                                                                                         |
| ------------------ | -------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `signer`           | `Signer`                         | Signer to use for the transaction (payer of the fronted liquidity)                                                                                                                  |
| `vault`            | `Data`                           | Vault to deposit to                                                                                                                                                                 |
| `realWithdrawalTx` | `WithdrawalTX`                   | Real withdrawal transaction data                                                                                                                                                    |
| `withdrawSequence` | `number`                         | Sequence number of the withdrawal that is being fronted, this used as race condition prevention, such that fronting will not happen if the withdrawal tx is already used in claim() |
| `txOptions?`       | `TransactionConfirmationOptions` | Transaction options                                                                                                                                                                 |

#### Returns

`Promise`<`string`>

***

### getAllVaults()

```
getAllVaults(owner?): Promise<Data[]>;
```

Defined in: [atomiq-base/src/spv\_swap/SpvVaultContract.ts:192](https://github.com/atomiqlabs/atomiq-base/blob/df344bedbab9ab3de863e3c2d9246e90bd861d04/src/spv_swap/SpvVaultContract.ts#L192)

Returns all currently opened vaults NOTE: This will take a long time, since the implementation will have to go through all the prior events

#### Parameters

| Parameter | Type     |
| --------- | -------- |
| `owner?`  | `string` |

#### Returns

`Promise`<`Data`\[]>

***

### getClaimFee()

```
getClaimFee(

   signer, 

   vault?, 

   withdrawalData?, 

feeRate?): Promise<bigint>;
```

Defined in: [atomiq-base/src/spv\_swap/SpvVaultContract.ts:263](https://github.com/atomiqlabs/atomiq-base/blob/df344bedbab9ab3de863e3c2d9246e90bd861d04/src/spv_swap/SpvVaultContract.ts#L263)

Returns the fee in native token base units to claim the swap

#### Parameters

| Parameter         | Type           | Description                                           |
| ----------------- | -------------- | ----------------------------------------------------- |
| `signer`          | `string`       | Signer claiming the swap                              |
| `vault?`          | `Data`         |                                                       |
| `withdrawalData?` | `WithdrawalTX` | Withdrawal to claim                                   |
| `feeRate?`        | `string`       | Optional fee rate (fetched on-demand if not provided) |

#### Returns

`Promise`<`bigint`>

***

### getFronterAddress()

```
getFronterAddress(

   owner, 

   vaultId, 

withdrawal): Promise<string>;
```

Defined in: [atomiq-base/src/spv\_swap/SpvVaultContract.ts:149](https://github.com/atomiqlabs/atomiq-base/blob/df344bedbab9ab3de863e3c2d9246e90bd861d04/src/spv_swap/SpvVaultContract.ts#L149)

Returns the party which currently fronted the withdrawal transaction

#### Parameters

| Parameter    | Type           | Description                                      |
| ------------ | -------------- | ------------------------------------------------ |
| `owner`      | `string`       | Owner of the vault                               |
| `vaultId`    | `bigint`       | Vault ID                                         |
| `withdrawal` | `WithdrawalTX` | Withdrawal transaction to check the fronting for |

#### Returns

`Promise`<`string`>

***

### getFronterAddresses()

```
getFronterAddresses(withdrawals): Promise<{

[btcTxId: string]: string;

}>;
```

Defined in: [atomiq-base/src/spv\_swap/SpvVaultContract.ts:156](https://github.com/atomiqlabs/atomiq-base/blob/df344bedbab9ab3de863e3c2d9246e90bd861d04/src/spv_swap/SpvVaultContract.ts#L156)

Returns the parties which currently fronted the withdrawal transactions

#### Parameters

| Parameter     | Type        | Description          |
| ------------- | ----------- | -------------------- |
| `withdrawals` | `object`\[] | withdrawals to query |

#### Returns

`Promise`<{ \[`btcTxId`: `string`]: `string`; }>

***

### getFrontFee()

```
getFrontFee(

   signer, 

   vault?, 

   withdrawalData?, 

feeRate?): Promise<bigint>;
```

Defined in: [atomiq-base/src/spv\_swap/SpvVaultContract.ts:283](https://github.com/atomiqlabs/atomiq-base/blob/df344bedbab9ab3de863e3c2d9246e90bd861d04/src/spv_swap/SpvVaultContract.ts#L283)

Returns the fee in native token base units to claim the swap

#### Parameters

| Parameter         | Type           | Description                                           |
| ----------------- | -------------- | ----------------------------------------------------- |
| `signer`          | `string`       | Signer claiming the swap                              |
| `vault?`          | `Data`         |                                                       |
| `withdrawalData?` | `WithdrawalTX` | Withdrawal to claim                                   |
| `feeRate?`        | `string`       | Optional fee rate (fetched on-demand if not provided) |

#### Returns

`Promise`<`bigint`>

***

### getHistoricalWithdrawalStates()?

```
optional getHistoricalWithdrawalStates(recipient, startBlockheight?): Promise<{

  latestBlockheight?: number;

  withdrawals: {

   [btcTxId: string]: SpvWithdrawalFrontedState | SpvWithdrawalClaimedState;

  };

}>;
```

Defined in: [atomiq-base/src/spv\_swap/SpvVaultContract.ts:217](https://github.com/atomiqlabs/atomiq-base/blob/df344bedbab9ab3de863e3c2d9246e90bd861d04/src/spv_swap/SpvVaultContract.ts#L217)

Returns the full history as fetched from the chain for a specific recipient

#### Parameters

| Parameter           | Type     | Description                          |
| ------------------- | -------- | ------------------------------------ |
| `recipient`         | `string` | A recipient to check the history for |
| `startBlockheight?` | `number` |                                      |

#### Returns

`Promise`<{ `latestBlockheight?`: `number`; `withdrawals`: { \[`btcTxId`: `string`]: `SpvWithdrawalFrontedState` | `SpvWithdrawalClaimedState`; }; }>

***

### getMultipleVaultData()

```
getMultipleVaultData(vaults): Promise<{

[owner: string]: object;

}>;
```

Defined in: [atomiq-base/src/spv\_swap/SpvVaultContract.ts:171](https://github.com/atomiqlabs/atomiq-base/blob/df344bedbab9ab3de863e3c2d9246e90bd861d04/src/spv_swap/SpvVaultContract.ts#L171)

Returns current vault data for multiple vaults

#### Parameters

| Parameter | Type        | Description         |
| --------- | ----------- | ------------------- |
| `vaults`  | `object`\[] | Vault data to query |

#### Returns

`Promise`<{ \[`owner`: `string`]: `object`; }>

***

### getRawClaimFee()?

```
optional getRawClaimFee(

   signer, 

   vault?, 

   withdrawalData?, 

feeRate?): Promise<bigint>;
```

Defined in: [atomiq-base/src/spv\_swap/SpvVaultContract.ts:273](https://github.com/atomiqlabs/atomiq-base/blob/df344bedbab9ab3de863e3c2d9246e90bd861d04/src/spv_swap/SpvVaultContract.ts#L273)

Returns raw fee (not including any refunds we might get that would make the getClaimFee negative) for claiming the swap

#### Parameters

| Parameter         | Type           | Description                                           |
| ----------------- | -------------- | ----------------------------------------------------- |
| `signer`          | `string`       | Signer claiming the swap                              |
| `vault?`          | `Data`         |                                                       |
| `withdrawalData?` | `WithdrawalTX` | Withdrawal to claim                                   |
| `feeRate?`        | `string`       | Optional fee rate (fetched on-demand if not provided) |

#### Returns

`Promise`<`bigint`>

***

### getRawFrontFee()?

```
optional getRawFrontFee(

   signer, 

   vault?, 

   withdrawalData?, 

feeRate?): Promise<bigint>;
```

Defined in: [atomiq-base/src/spv\_swap/SpvVaultContract.ts:293](https://github.com/atomiqlabs/atomiq-base/blob/df344bedbab9ab3de863e3c2d9246e90bd861d04/src/spv_swap/SpvVaultContract.ts#L293)

Returns raw fee (not including any refunds we might get that would make the getClaimFee negative) for claiming the swap

#### Parameters

| Parameter         | Type           | Description                                           |
| ----------------- | -------------- | ----------------------------------------------------- |
| `signer`          | `string`       | Signer claiming the swap                              |
| `vault?`          | `Data`         |                                                       |
| `withdrawalData?` | `WithdrawalTX` | Withdrawal to claim                                   |
| `feeRate?`        | `string`       | Optional fee rate (fetched on-demand if not provided) |

#### Returns

`Promise`<`bigint`>

***

### getVaultData()

```
getVaultData(owner, vaultId): Promise<Data>;
```

Defined in: [atomiq-base/src/spv\_swap/SpvVaultContract.ts:164](https://github.com/atomiqlabs/atomiq-base/blob/df344bedbab9ab3de863e3c2d9246e90bd861d04/src/spv_swap/SpvVaultContract.ts#L164)

Returns current vault data

#### Parameters

| Parameter | Type     | Description        |
| --------- | -------- | ------------------ |
| `owner`   | `string` | Owner of the vault |
| `vaultId` | `bigint` | Vault ID           |

#### Returns

`Promise`<`Data`>

***

### getVaultLatestUtxo()

```
getVaultLatestUtxo(owner, vaultId): Promise<string>;
```

Defined in: [atomiq-base/src/spv\_swap/SpvVaultContract.ts:179](https://github.com/atomiqlabs/atomiq-base/blob/df344bedbab9ab3de863e3c2d9246e90bd861d04/src/spv_swap/SpvVaultContract.ts#L179)

Returns the latest utxo of a vault (or null if vault closed or not found)

#### Parameters

| Parameter | Type     | Description        |
| --------- | -------- | ------------------ |
| `owner`   | `string` | Owner of the vault |
| `vaultId` | `bigint` | Vault ID           |

#### Returns

`Promise`<`string`>

***

### getVaultLatestUtxos()

```
getVaultLatestUtxos(vaults): Promise<{

[owner: string]: object;

}>;
```

Defined in: [atomiq-base/src/spv\_swap/SpvVaultContract.ts:186](https://github.com/atomiqlabs/atomiq-base/blob/df344bedbab9ab3de863e3c2d9246e90bd861d04/src/spv_swap/SpvVaultContract.ts#L186)

Returns the latest utxos of for multiple vaults (or null if vault closed or not found)

#### Parameters

| Parameter | Type        | Description         |
| --------- | ----------- | ------------------- |
| `vaults`  | `object`\[] | Vault data to query |

#### Returns

`Promise`<{ \[`owner`: `string`]: `object`; }>

***

### getWithdrawalData()

```
getWithdrawalData(btcTx): Promise<WithdrawalTX>;
```

Defined in: [atomiq-base/src/spv\_swap/SpvVaultContract.ts:229](https://github.com/atomiqlabs/atomiq-base/blob/df344bedbab9ab3de863e3c2d9246e90bd861d04/src/spv_swap/SpvVaultContract.ts#L229)

Parses withdrawal data from the parsed bitcoin transaction

#### Parameters

| Parameter | Type    | Description |
| --------- | ------- | ----------- |
| `btcTx`   | `BtcTx` |             |

#### Returns

`Promise`<`WithdrawalTX`>

***

### getWithdrawalState()

```
getWithdrawalState(withdrawalTx, scStartBlockheight?): Promise<SpvWithdrawalState>;
```

Defined in: [atomiq-base/src/spv\_swap/SpvVaultContract.ts:201](https://github.com/atomiqlabs/atomiq-base/blob/df344bedbab9ab3de863e3c2d9246e90bd861d04/src/spv_swap/SpvVaultContract.ts#L201)

Returns current state of the withdrawal, optionally only check withdrawals from the provided block height

#### Parameters

| Parameter             | Type           | Description |
| --------------------- | -------------- | ----------- |
| `withdrawalTx`        | `WithdrawalTX` |             |
| `scStartBlockheight?` | `number`       |             |

#### Returns

`Promise`<`SpvWithdrawalState`>

***

### getWithdrawalStates()

```
getWithdrawalStates(withdrawalTxs): Promise<{

[btcTxId: string]: SpvWithdrawalState;

}>;
```

Defined in: [atomiq-base/src/spv\_swap/SpvVaultContract.ts:209](https://github.com/atomiqlabs/atomiq-base/blob/df344bedbab9ab3de863e3c2d9246e90bd861d04/src/spv_swap/SpvVaultContract.ts#L209)

Returns current state of the withdrawals, optionally only check withdrawals from the provided block height

#### Parameters

| Parameter       | Type        | Description                                                            |
| --------------- | ----------- | ---------------------------------------------------------------------- |
| `withdrawalTxs` | `object`\[] | Object with the withdrawal tx to check + an optional start blockheight |

#### Returns

`Promise`<{ \[`btcTxId`: `string`]: `SpvWithdrawalState`; }>

***

### open()

```
open(

   signer, 

   vault, 

txOptions?): Promise<string>;
```

Defined in: [atomiq-base/src/spv\_swap/SpvVaultContract.ts:40](https://github.com/atomiqlabs/atomiq-base/blob/df344bedbab9ab3de863e3c2d9246e90bd861d04/src/spv_swap/SpvVaultContract.ts#L40)

Signs & sends transactions for opening a specific spv vault

#### Parameters

| Parameter    | Type                             | Description                                                   |
| ------------ | -------------------------------- | ------------------------------------------------------------- |
| `signer`     | `Signer`                         | Signer to use for the transaction (must match owner in vault) |
| `vault`      | `Data`                           | Vault to init                                                 |
| `txOptions?` | `TransactionConfirmationOptions` | Transaction options                                           |

#### Returns

`Promise`<`string`>

***

### toOpReturnData()

```
toOpReturnData(

   recipient, 

   rawAmounts, 

   executionHash?): Buffer;
```

Defined in: [atomiq-base/src/spv\_swap/SpvVaultContract.ts:246](https://github.com/atomiqlabs/atomiq-base/blob/df344bedbab9ab3de863e3c2d9246e90bd861d04/src/spv_swap/SpvVaultContract.ts#L246)

Serializes the withdrawal params to the OP\_RETURN data

#### Parameters

| Parameter        | Type        | Description                                       |
| ---------------- | ----------- | ------------------------------------------------- |
| `recipient`      | `string`    | Recipient of the withdrawn tokens                 |
| `rawAmounts`     | `bigint`\[] | Raw amount of tokens to withdraw                  |
| `executionHash?` | `string`    | Optional execution hash of the actions to execute |

#### Returns

`Buffer`

***

### txsClaim()

```
txsClaim(

   signer, 

   vault, 

   txs, 

   synchronizer?, 

   initAta?, 

feeRate?): Promise<TX[]>;
```

Defined in: [atomiq-base/src/spv\_swap/SpvVaultContract.ts:123](https://github.com/atomiqlabs/atomiq-base/blob/df344bedbab9ab3de863e3c2d9246e90bd861d04/src/spv_swap/SpvVaultContract.ts#L123)

Returns the unsigned transactions for claiming the funds from a specific vault

#### Parameters

| Parameter       | Type                                    | Description                                                                                                  |
| --------------- | --------------------------------------- | ------------------------------------------------------------------------------------------------------------ |
| `signer`        | `string`                                | Signer to use for the transaction                                                                            |
| `vault`         | `Data`                                  | Vault to claim from                                                                                          |
| `txs`           | `object`\[]                             |                                                                                                              |
| `synchronizer?` | `RelaySynchronizer`<`any`, `TX`, `any`> | Optiona synchronizer to be used if BTC relay contract is not synced up to the required blockheight           |
| `initAta?`      | `boolean`                               | Whether to initialize a token account if it doesn't exist (applies to e.g. Solana, with token specific ATAs) |
| `feeRate?`      | `string`                                | Fee rate to use for the transaction                                                                          |

#### Returns

`Promise`<`TX`\[]>

***

### txsDeposit()

```
txsDeposit(

   signer, 

   vault, 

   rawAmounts, 

feeRate?): Promise<TX[]>;
```

Defined in: [atomiq-base/src/spv\_swap/SpvVaultContract.ts:69](https://github.com/atomiqlabs/atomiq-base/blob/df344bedbab9ab3de863e3c2d9246e90bd861d04/src/spv_swap/SpvVaultContract.ts#L69)

Returns the unsigned transactions for depositing funds to a specific spv vault

#### Parameters

| Parameter    | Type        | Description                                    |
| ------------ | ----------- | ---------------------------------------------- |
| `signer`     | `string`    | Signer to use for the transaction (can be any) |
| `vault`      | `Data`      | Vault to deposit to                            |
| `rawAmounts` | `bigint`\[] | Raw amounts to deposit (these are unscaled)    |
| `feeRate?`   | `string`    | Fee rate to use for the transaction            |

#### Returns

`Promise`<`TX`\[]>

***

### txsFrontLiquidity()

```
txsFrontLiquidity(

   signer, 

   vault, 

   realWithdrawalTx, 

   withdrawSequence, 

feeRate?): Promise<TX[]>;
```

Defined in: [atomiq-base/src/spv\_swap/SpvVaultContract.ts:93](https://github.com/atomiqlabs/atomiq-base/blob/df344bedbab9ab3de863e3c2d9246e90bd861d04/src/spv_swap/SpvVaultContract.ts#L93)

Returns the unsigned transactions for fronting liquidity for a specific withdrawal btc transaction

#### Parameters

| Parameter          | Type           | Description                                                                                                                                                                         |
| ------------------ | -------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `signer`           | `string`       | Signer to use for the transaction (payer of the fronted liquidity)                                                                                                                  |
| `vault`            | `Data`         | Vault to deposit to                                                                                                                                                                 |
| `realWithdrawalTx` | `WithdrawalTX` | Real withdrawal transaction data                                                                                                                                                    |
| `withdrawSequence` | `number`       | Sequence number of the withdrawal that is being fronted, this used as race condition prevention, such that fronting will not happen if the withdrawal tx is already used in claim() |
| `feeRate?`         | `string`       | Fee rate to use for the transaction                                                                                                                                                 |

#### Returns

`Promise`<`TX`\[]>

***

### txsOpen()

```
txsOpen(

   signer, 

   vault, 

feeRate?): Promise<TX[]>;
```

Defined in: [atomiq-base/src/spv\_swap/SpvVaultContract.ts:49](https://github.com/atomiqlabs/atomiq-base/blob/df344bedbab9ab3de863e3c2d9246e90bd861d04/src/spv_swap/SpvVaultContract.ts#L49)

Returns the unsigned transactions for opening a specific spv vault

#### Parameters

| Parameter  | Type     | Description                                                   |
| ---------- | -------- | ------------------------------------------------------------- |
| `signer`   | `string` | Signer to use for the transaction (must match owner in vault) |
| `vault`    | `Data`   | Vault to init                                                 |
| `feeRate?` | `string` | Fee rate to use for the transaction                           |

#### Returns

`Promise`<`TX`\[]>