> For the complete documentation index, see [llms.txt](https://docs.startrail.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.startrail.io/startrail-sdk-js/startrail-api-methods/bulk.md).

# Bulk

To know the methods calling to Startrail API from Startrail-Sdk-Js

## `bulk()`

Bundling bulk transactions into a single Startrail-API call.

* `createSRR()`
* `approveSRRByCommitment()`
* `transferFromWithProvenance()`

## Method parameters

| Variable                      | Type        | Description                                                                                 |
| ----------------------------- | ----------- | ------------------------------------------------------------------------------------------- |
| `startrailLUWContractAddress` | `string`    | The address of LicensedUserWallet(LUW) contract.                                            |
| `isCompressEnabled`           | `boolean`   | Sets true if you want to compress a chunk of data with Gzip for HTTP call to Startrail-API. |
| `txs`                         | `TxDetails` | See TxDetails below.                                                                        |

### TxDetails

| Variable       | Type                                                                      | Description                                                                                                                                                                                                                                                                                                                                                                                                                                              |
| -------------- | ------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `functionType` | `'approveSRRByCommitment' \| 'createSRR' \| 'transferFromWithProvenance'` | Functoin type you want to execute                                                                                                                                                                                                                                                                                                                                                                                                                        |
| `data`         | `approveSRRByCommitment \| createSRR \| transferFromWithProvenance`       | <p>Refer to the Method parameters respectively from<br><a href="/startrail-sdk-js/startrail-api-methods/createsrr.md">createSRR</a><br><a href="/startrail-sdk-js/startrail-api-methods/approvesrrbycommitment.md">approveSRRByCommitment</a><br><a href="/startrail-sdk-js/startrail-api-methods/transferfromwithprovenance.md">transferFromWithProvenance</a><br>Please don't forget to extract 'startrailLUWContractAddress' from the parameters.</p> |

### Parameters Example

```
sdk.bulk(
  {
    isCompressEnabled: true,
    startrailLUWContractAddress: '0x1099a229951CeCcbE94aFA7017728503663E1983',
    txs: [
      {
        functionType: 'createSRR',
        data: {
          contractAddress: "0xA6E6a9E20a541680a1D6E1412f5088AefBF58a22",
          isPrimaryIssuer: false,
          artistAddress: "0xA6E6a9E20a541680a1D6E1412f5088AefBF58a22",
          lockExternalTransfer: false,
          metadata: {
            $schema: "ipfs://bafkreif77ionobe56gawqnplet46x3sjfinx3krm4reldzn7v6c2nfrmy4",
            startbahnCertICTagUIDs: [
              "1234567890abcdef"
            ],
            chipUIDs: [
              "1234567890abcdef"
            ],
            title: {
              en: "A title",
              ja: "タイトル",
              zh: "一个标题"
            },
            size: {
              width: 200.0,
              height: 400.0,
              depth: 12.4,
              unit: "pixel",
              flexibleDescription: {
                en: "flexibleDescription comes here",
                ja: "説明を入力"
              }
            },
            attributes: [
              {
                trait_type: "Mouth",
                value: "Surprised"
              }
            ],
            medium: {
              en: "Oil on canvas",
              ja: "キャンバスに油彩",
              zh: "布面油画"
            },
            edition: {
              uniqueness: "unique work",
              proofType: "ED",
              number: 1,
              totalNumber: 3,
              note: {
                en: "some extra notes in 1 or more languages"
              }
            },
            contractTerms: {
              royaltyRate: 15.7,
              fileURL: "ipfs://bafkreihmlsij6s5ri6e347h7yqjlsl4qa3iykub6qmumctb2mshc4u7vlm"
            },
            note: {
              en: "note",
              zh: "注意"
            },
            thumbnailURL: "ipfs://bafkreiedkaf4w5ogbbnfgp4jyrlvdqmwh3edryszcciee3puyn7nltcomi",
            yearOfCreation: {
              en: "around 2010-2020",
              ja: "2010年から2020年頃"
            },
            isDigital: true,
            digitalDataHash: "sha256-247e4b904322a1dd0b148cd77e8627ec7d391251380880ab4621726ecb945ef5",
            digitalComponents: [{
              hash: "sha256-247e4b904322a1dd0b148cd77e8627ec7d391251380880ab4621726ecb945ef5",
              category: "artwork"
            }],
            attachmentFiles: [{
              hash: "sha256-247e4b904322a1dd0b148cd77e8627ec7d391251380880ab4621726ecb945ef5",
              category: "artwork"
            }],
            name: "some nft name",
            description: "some nft description",
            image: "ipfs://bafkreiedkaf4w5ogbbnfgp4jyrlvdqmwh3edryszcciee3puyn7nltcomi",
            external_url: "https://openseacreatures.io/3"
          }
        }
      },
      {
        functionType: 'approveSRRByCommitment',
        data: {
          contractAddress: "0xA6E6a9E20a541680a1D6E1412f5088AefBF58a22",
          tokenId: '639283836913',
          preimage: 'test86@gmail.com',
          metadata: {
              $schema: 'ipfs://bafkreiagmzvya63vrv4byglrtkabk5xrr2x7g7zsa3fzxbz43c7tyw6kgm',
              transferType: 'Primary sale',
              remarks: {
                  en: 'Reason for the transfer, English',
                  ja: '移転の理由：日本語'
              }
          },
          isHashPreimageEnabled: false
        }
      },
      {
        functionType: 'transferFromWithProvenance',
        data: {
          contractAddress: "0xA6E6a9E20a541680a1D6E1412f5088AefBF58a22",
          to: '0xF6B90C96D53058123C32C53A03b4420594714342',
          tokenId: '832736095995',
          metadata: {
            transferType: "Primary sale",
            remarks: {
              en: "Reason for the transfer",
              ja: "移転の理由：日本語"
            },
            customHistoryId: 1,
          },
          isIntermediary: false,
        }
      }
    ]
  }
)

```

## Returns

`Promise` will be returned which resolves with a `Response` object upon a successful confirmation. `false` will be returned when user flow is cancelled in such a case that a user closes the popup modal.

If the confirmation fails, the `Promise` will resolve with an {error} object that describes the failure.

`Promise<Response | false>`

### Response

| Variable  | Type        | Description                                             |
| --------- | ----------- | ------------------------------------------------------- |
| `batchId` | `string`    | ID to identify transaction details in Startrail-API DB. |
| `txs`     | `TxDetails` | Transaction details                                     |

### TxDetails

| Variable      | Type     | Description              |
| ------------- | -------- | ------------------------ |
| `metadataCID` | `string` | A calculated metadataCID |
| `tokenId`     | `string` | A calculated tokenId     |

### Error

Custom `Error` objects. Refer to the [Error Catalogue](/startrail-sdk-js/errors.md) for possible data.

### Response Example

```
{
  batchId: 1,
  tx: {
      tokenId: "209850285627",
      metadataCID: "bafkreibjdtcklpe5wjgh6qp2dqygaydm3d4xttfhaphgian73bpprkr7xu"
  }
}
```


---

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