REF1699 Standard

A standard for referral system implementation in NFT Collections' Smart Contracts.

• Extended contract from ERC721A.
• Reusable royalty function to reward your referrers based on your collection rules

Overview

How to extend REF1699

You have to add the file REF1699.sol to your project directory and import it to your Smart Contract. To correctly extend the standard, you will have to set the constructor for the REF1699 standard.

pragma solidity ^0.8.x;

import "./REF1699.sol";

contract MyCollection is REF1699 {
    constructor() REF1699(
		"My Collection Name", // Collection Name (ERC721A)
		"MYCOLLECTION", // Collection Symbol (ERC721A)
		20, // Max batch size (ERC721A)
		10000, // Collection size (ERC721A)
		1, // Non holder referrer royalty 
		10 // Holder referrer royalty
	) {}
}

How to reward referrers

To reward your referrers you should use the _sendReferrerRoyalty() internal function in any function you want, for example the mint() function. NOTE: the function should be a payable function and the _sendReferrerRoyalty() should be called before the _safeMint() function.

pragma solidity ^0.8.x;

import "./REF1699.sol";

contract MyCollection is REF1699 {
    ...
    function mint(uint quantity_, address referrer) external payable {
	    ... // RESTRICTIONS AND OTHER LOGIC
	    
	    // If referrer isn't 0x0 address send the referrer royalty
	    if (referrer != address(0)) {
		    _sendReferrerRoyalty(referrer);
		}
		_safeMint(msg.sender, _quantity);
		
	    ... // OTHER LOGIC
    }
    ...
}

How to integrate

Check out our integration in this Demo in ourREF1699-minting-site example.

Minting integration

Referrer link generation

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