# Women of Crypto

**Published by:** [01dcat](https://paragraph.com/@01dcat/)
**Published on:** 2022-02-03
**URL:** https://paragraph.com/@01dcat/women-of-crypto

## Content

Let’s start it againI am really enjoying to work with all the women in the tech, that is why when I know there is a project call “Women of Crypto” I am so happy and want to own 1–2 those NFTs for my friends.What is happening during the mintWhiteList for 4350 wallets addresses, and yes, I have 1. At the moment whitelist-mint started, the website immediately get into a very unpleasure user experience — WL not be able to mint.How it looks like#all the WL holders are starting post their addresses and proofs of the WL, what is going on? let’s take a quick lookconstructor() ERC721A("Women of Crypto", "WOC") {} function preSaleMint(bytes32[] calldata _proof, uint256 nMints) external payable { looks good, you need the calldata_proof to mint. then the calldata_proof will get from herelike every second the page tries to get the proof from an external service. And the service will be DDOS with all the WL holders are open the webpage for minting.What is the next?we can either wait for the fix from the project owners or we can just calc the data by ourselves, then call the smart contract to mintWhat we learned hereCrypto doesn’t mean you don’t need to care about the web2 performance, do you work to learn how to write a scalable system so people can start their journey to web3 without hitting unnecessary issues.

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