Feel free to include more than one issuance in a single request via the payload array. The minimum number of issue requests is one. Though there is no fixed upper limit for the number of issue requests you can submit at one time, we recommend limiting batches to no more than 250 issue requests for optimal processing.
issue to issuer
If payload[*].to is not given, your SRR will be issued to your luw address
Headers
Request Body
The API responds with 201. see Response Body results[*].status for details of each entry.
After a successful issuance, 2 types of JSONs will be returned in results[*].srr.metadata:
json
It is converted from the originalJson. The object contains some values that are different from those that are written on chain. This json is meant to be easier for consumption on third party applications and it is maintained for backward compatibility. For example if an ipfs link exists in the metadata, this json converts it to an https link for easier consumption.
originalJson
It is equal to what is written on chain. So if you want to consume this field, some carings are needed. For example it can contain ipfs links like ipfs:// that requires conversion before a browser can display it.
* both of the above JSONs may be different from what originally sent in the request payload.
{"results": [ {"status":"waiting_for_mining","srr": {"tokenId":"149941159501","collectionContractAddress":"0x552e100d1c368435db99974C658c757E8A6102Dd","collection": {"contractAddress":"0x552e100d1c368435db99974C658c757E8A6102Dd","name":"Test","symbol":"TTT" },"artist": {"contractAddress":"0xA6E6a9E20a541680a1D6E1412f5088AefBF58a22","originalName":"artist orignal name","englishName":"artist english name","userType":"artist","createdAt":"2022-04-14T03:15:35.153Z","updatedAt":"2022-04-14T03:15:35.153Z" },"issuer": {"contractAddress":"0xA6E6a9E20a541680a1D6E1412f5088AefBF58a22","originalName":"artist orignal name","englishName":"artist english name","userType":"artist","createdAt":"2022-04-14T03:15:35.153Z","updatedAt":"2022-04-14T03:15:35.153Z" },"isPrimaryIssuer":true,"issuedAt":"2022-04-14T03:15:35.153Z","metadata": { "json": {// converted verion of originalJson. It converts some fields from the originalJson// for backward compatibility and easier consumption reasons// This JSON may be different from the one sent in the request payload, // because Startbahn update it to comply with the latest version },"originalJson": {// The JSON that is saved on chain.// This JSON may be different from the one sent in the request payload, // because Startbahn update it to comply with the latest version },"digest":"b764ad28dec64764c83089967db4710c94d831c677424d1883....", },"createdAt":"2022-04-14T03:15:35.153Z","updatedAt":"2022-04-14T03:15:35.153Z" },"externalId":"c0456840-5bdf-4375-a6ce-106697b7dfb7" } ]}
The API responds with 400 if request body invalid or some validation errors that can be instantly detected.
// If the metadata is same with another previous SRR{"statusCode":400,"message": {"results": [ {"status":"failed","externalId":"c0456840-5bdf-4375-a6ce-106697b7dfb7","message":"DUPLICATE_METADATA" } ] }}{"statusCode":400,"message": {"results": [ {"status":"failed","externalId":"c0456840-5bdf-4375-a6ce-106697b7dfb7","message":"DUPLICATE_CHIP" } ] }}{"statusCode":400,"message":"Request Content Error: Current request already logged with status successful"}{"statusCode":400,"message": {"results": [ {"status":"failed","externalId":"bulk20122fdredcd2dfve","message":"UNKNOWN_ERROR: external ID: bulk20122fdredcd2dfve." } ] }}{"statusCode":400,"message": {"results": [ {"status":"failed","externalId":"c0456840-5bdf-4375-a6ce-106697b7dfb7","message":"UNKNOWN_ARTIST" } ] }}// If metadata with issuer and artist combination is already sent{"statusCode":400,"message":"Request Content Error: Current request already logged with status successful"}// DTO validation error{"statusCode":400,"message": [ "payload.0.metadata is invalid. Check it against the metadata JSON schema. Details: should have required property 'title' ({\"missingProperty\":\"title\"}).",
"payload.0.artistAddress must be a valid Ethereum addresses","payload.0.externalId should not be empty","payload.0.externalId must be a string" ]}
Multiple issuance
In case of multiple/bulk issuance as soon as one case failed, the rest of the payload will be definitely failed as well.
Example of duplicated metadata
{"statusCode":400,"message": {"results": [ {"status":"failed","externalId":"anId","message":"DUPLICATE_METADATA" }, {"status":"failed","externalId":"anId","message":"SRR_NOT_CREATED: Not created because there is SRR in the same batch that error" } ] }}
Example of DTO validation error
{"statusCode":400,"message": [ "payload.1.metadata is invalid. Check it against the metadata JSON schema. Details: should have required property 'title' ({\"missingProperty\":\"title\"}).",
"payload.1.artistAddress must be a valid Ethereum addresses","payload.1.externalId should not be empty","payload.1.externalId must be a string" ]}
The API responds with 5xx if there are other issues, such as deeper validation errors.
// For example in case of collection ownership issue{"statusCode":500,"message":"STARTRAIL_ERROR: <reason>"}// In case there is unknown error. Please contact us.{"statusCode":500,"message":"UNKNOWN_ERROR: external ID: xxxx"}
If you have a TAG for a physical artwork please add
chipUIDs and startbahnCertICTagUIDs both at the same time and they both need to contain the same value. The value is an array containing the list of the Chip UIDs. For example
A requestId given by the caller, to ensure requests are only processed once. If the requestId is known and processed before, api will not process this call again, and respond with an error. A good practice is using random UUID.
*requestId must be unique for a given issuer-address. As a result any duplicate combination of requestId and issuer-address is instantly rejected with no impact on either.
payload*
array
Array of issue requests. Further constraints explained above.
payload[*].externalId*
string
An ID to identify the record in your system. We recommend to use UUID, but it can use any string as long it is unique in your system.
payload[*].metadata*
object
The metadata to be issued as a complex object. Detailed schema specification can be found here.
The API accepts versions 2.0 and higher.
payload[*].artistAddress*
string
The ethereum address of the artist of the artwork.
payload[*].isPrimaryIssuer*
boolean
If you are the primary issuer of this NFT, set this to true.
payload[*].lockExternalTransfer*
boolean
If you want to prevent your NFTs to be transferred on decentralized marketplaces, set this to true.
payload[*].externalUrls
Array<string>
You may provide reference URLs to your artwork that is visible on the SRR page of Startrail PORT.
Although this value won't be written on the blockchain, the value may get used for external_url field in the metadata(See Version 2.2 for details).
external_url in the metadata will be:
If external_url is provided, the value gets used.
If external_url is not provided but this externalUrls is provided, the first entry gets used.
Otherwise we will assign a link to the SRR page of Startrail PORT.
payload[*].to
string
Ethereum address target the NFT should be sent to after minting (Issue on Buyer).
If none is given the NFT will be minted into your LUW by default.
payload[*].attachmentFiles
Array<object>
Attachment files that will be included in SRR.
payload[*].attachmentFiles[*].name
string
The name of file.
This is used for when the file is downloaded or shown. The extension is recommended to be the same as the actual uploaded file.
payload[*].attachmentFiles[*].category
string
Please refer to this page to understand the difference among the categories.
Please note that contract terms and thumbnail are NOT attachment files. The URL for contract terms and thumbnail are needed for metadata. (See metadata attribute)
payload[*].attachmentFiles[*].url
string
For the time being, the URL must be under Startbahn's GCS bucket. This can include finalUrl's that is the field in the response of the singed URL endpoint or a URL that has already been prepared for the client by Startbahn's team. Any other URL will result to rejecting the request without issuing the SRR
payload[*].collectionAddress
string
The address of collection that the SRR will belong to. This collection must be owned by the caller issuer-address.
results
results of the request
Array
results[*].srr
Detail of the SRR. Please check example for detailed information.
object
results[*].externalId
ID to identify the SRR. Defined by client when calling.
string
results[*].status
waiting_for_miningwait for completion of blockchain mining. The status can be confirmed via subgraph or less favorably via this REST endpoint.