Q&A: Is it possible to delegate another contract right to mint a token on behalf of others?

Question

This part of own Q&A serial of posts which shares knowledge gained during work on one project

My project implies another contract should transfer a token by some condition. Is it possible to delegate another contract right to mint a token on behalf of others?

Answer 1

It is necessary for the ERC721 standard as everyone can mint this token. However, it is possible to delegate another user or contract right to transfer the token.

contract.approve(to, tokenId)

ERC721 API functions:

Functions

    balanceOf(owner)

    ownerOf(tokenId)

    safeTransferFrom(from, to, tokenId)

    transferFrom(from, to, tokenId)

    approve(to, tokenId)

    getApproved(tokenId)

    setApprovalForAll(operator, _approved)

    isApprovedForAll(owner, operator)

    safeTransferFrom(from, to, tokenId, data)