SponsorFee

⚠️ The SponsorFee structure is added in Standard library version 4.

SponsorFee is a structure that sets up sponsorship. For information about sponsorship, see the Sponsored Fee article. The sponsorship setup is performed only if the structure is included in the resulting expression of the callable function. See details in the Callable Function article.

The sponsorship setup is only available if the asset is issued by a dApp account (by the same script invocation as well) and is not a smart asset.

Constructor

SponsorFee(assetId: ByteVector, minSponsoredAssetFee: Int|Unit)

Fields

#	Name	Data type	Description
1	assetId	ByteVector	Asset ID
2	minSponsoredAssetFee	Int|Unit	Amount of sponsored asset that is equivalent to 0.001 WAVES, specified in the minimum fraction (“cent”) of the sponsored asset. unit — disable the sponsorship

Example

{-# STDLIB_VERSION 4 #-}
{-# CONTENT_TYPE DAPP #-}
{-# SCRIPT_TYPE ACCOUNT #-}
  
@Callable(i)
func issueAndSponsor() = {
  let issue = Issue("Spring", "", 100000, 2, true, unit, 0)
  let id = calculateAssetId(issue)
  [
    issue,
    SponsorFee(id, 300)
  ]
}

The issueAndSponsor callable function issues an asset and enables sponsorship. The minimum fee in sponsored asset is 3 Spring.