Some questions about minting

[eduardstal]

Question Posted: 14 August 2021, in Discord

buddy#9879:

Hey all - I have a few questions about minting. As a dev I'm new to the NFT space so forgive me if these are very basic questions. I'd like to reward users of my project with an NFT when they've taken specific actions. I don't want them to bear any minting/transfer costs.

Question 1. Am I correct in assuming that my app's designated address would be doing the lazy-minting (i.e would be in the snippet below as contract ), and then transferring the NFT to the user's address?

Question 2. Referring to the following snippet, in the SDK docs as reference:

const item = await sdk.nft.mintLazy({
    "@type": "ERC721",
    contract: "0x0", // lazy mint contract contract address
    uri: '//testUri', // token URI
    creators: [{ account: "0x0", value: 10000 }], // array of creators object
    royalties: [], // array of royalties
})

And this snippet is in the example tutorial Github (https://github.com/rarible/protocol-example/):

const item = await sdk?.nft.mintLazy({
        '@type': 'ERC721', // type of NFT to mint
        contract: toAddress('0x6ede7f3c26975aad32a475e1021d8f6f39c89d82'), // rinkeby default Rarible collection
        uri: "/ipfs/QmWLsBu6nS4ovaHbGAXprD1qEssJu4r5taQfB74sCG51tp", // tokenUri, url to media that nft stores
        creators: [{ account: toAddress(accounts[0]), value: 10000 }], // list of creators
        royalties: [], // royalties
    })

What is the difference between: contract: "0x0", // lazy mint contract contract address and: contract: toAddress('0x6ede7f3c26975aad32a475e1021d8f6f39c89d82'), // rinkeby default Rarible collection Specifically what is toAddress ?

Eugene Nacu | Rarible#9332:

in SDK docs 0x0 is like a placeholder, so you should replace it with real address (smart contract address, where NFTs will be created)

Regarding other stuff: I think now there is no possibility to gift lazy minted NFTs (do you want to gift these NFTs, right?)

buddy#9879:

Thanks for clarifying! So for address would I be adding the ERC721 smart contract address for Mainnet? Your docs give this address as a Ropsten example: 0xB0EA149212Eb707a1E5FC1D2d3fD318a8d94cf05

And yes - I would like to gift the NFT's if possible. I'm fine with minting them myself and sending. I assume that I would need to use the examples in the 'ERC721 Standard Minting' section (https://docs.rarible.org/asset/creating-an-asset#erc721-standard-minting) ?

[eduardstal]

Since we need to group and filter the discussions page, I'll be adding this reply as an answer since these kinds of threads(from discord) won't have activity any time soon.