Bug Fixing a NFT Presale smart contract

[@Younes07770]

See this is why I love you bro! Many other KZbinrs would have not followed up on past videos / errors.

[@HashLipsAcademy]

I just listen when you guys ask 😁

[@MundoDeriva]

Posted my question on the other video and the answer was already out, thanks a lot for the great teaching

[@HashLipsAcademy]

Only a pleasure

[@hiranga]

Dude, *Daniel* and the dear community - much love to all of you guys! This is wild💪🏾

[@TINTUHD]

Can not wait for the smartcontracts videos!! :)

[@amampathak]

Thanks for this so much, Your content is so valuable Daniel! I'm really glad you made an update smart contracts video again, I only have one major query left, which is regarding the minting website we make, and how to integrate smart contract into that. know you created the dApp series which gave me a general idea (I'm still learning) but with this updated code, maybe if you find time I would love to see a video about that as well. I've customized websites before but that have been from front end wordpress plugins, not from code, so was curious how to integrate the minting into the website, and customize the look and feel of it, setting up a countdown for the minting date or having it live already like you have on yours. I think I am a little confused there because I got to the IPFS part, and think I understand the opensea testnet part as well, but want to know what to change when we are to switch from test opensea to main opensea, as well as the website setup part. Again, thanks so much for all you do man! and I hope to buy my own NCC soon as I'm able! Take care!

[@DiegoRaulGalmarini]

I think you can make an and put the html of the dApp inside to sell your NFTs

[@amampathak]

@@DiegoRaulGalmarini Hi! thanks for your input, can you share any resources in mind that'll teach me that. what part of the dapp needs to be added to the site?

[@Younes07770]

@@amampathak Alternatively you can also follow this playlist /watch?v=dO5ojkLa-ro&list=PLvfQp12V0hS1aYCrU5CziyxKxie6OPPPS from hashlips or /watch?v=SD1DTrlJeKM&list=PLvfQp12V0hS3YHAyPHBHuFMCDhBPfrPry also hashlips videos One of his videos shows how to add a smart contract address in blockchainActions.js but I forgot which video

[@Younes07770]

I tried to post code instruction here but youtube loves to censor all comments and delete them if they apparently contain code...

[@HashLipsAcademy]

We will have to make a video so you can see exactly what to do. Thank you for the nice comment. I have created a series where in I explain how to setup a Dapp but will relook at the whole process and show you all the extras

[@cryptoprofitstrategies1792]

Hey, Daniel! Thanks for another awesome explanation in the video! A couple of ideas to implement would be: 1. How do we avoid spending too much extra gas fees when adding addresses to the whitelist of the contract? It might be not an issue on Polygon, but I think quite a few people (myself included) want to deploy Ethereum smart contracts, so big gas fees are a problem there. In one of the comments I suggested collecting a whilelist beforehand and adding it into your smart contract before deploying it. It's not the best solution, so maybe you could think of a better one. 2. Another cool thing that could be useful in the contract would be adding a function which would allow the contract to receive royalty fees when each nft is resold after it was minted. I know that opensea allows to set a % of royalty fees in the collection options, but what if we could define it in the smart contract so it would work outside opensea too?

[@HashLipsAcademy]

Yes we can look at that. But as for Royalties it's usually another contract that handles them. So will be creating a Royalties contract soon

[@cryptoprofitstrategies1792]

@@HashLipsAcademy Sounds good and interesting! Can't wait to watch a video about that!)

[@Клоунеско]

As always on top! Thanks and thumbs up!👍

[@HashLipsAcademy]

Thank you too!

[@kingidennis3790]

You are the man!!!

[@HashLipsAcademy]

Thank you 🙏

[@tonyfisher6379]

ANOTHER ONE!!!!!!!! You're the MAN!!! Thanks, Daniel!!

[@HashLipsAcademy]

Thanks again!

[@DiegoRaulGalmarini]

Many thaks Daniel... your the best...

[@HashLipsAcademy]

Thanks

[@kamalchan9756]

thank you very very much bro i learned a lot from you

[@BrodoFaggings]

So awesome, thank you so much! Do you have any knowledge about minting NFT's on Solana? So far it seems it's only possible to mint them manually on SolSea.

[@HashLipsAcademy]

You can also mint in the console but yea it's not very user friendly at the moment.

[@claytong8249]

you can mint them using metaplex and candy machine it's not much better than the console but it helps to smooth things out a little bit. Any chances on doing a solana series? What's your thoughts and opinions about Solana?

[@claytong8249]

also side note I just really want to say thank you I literally went from 0 coding experience to having a fully functioning program and solving the problems faster than the programmer I hired thanks to you and your tutorials! If you have a patreon or anything I'd love to sign up and support you further.

[@Kratos0311]

Thanks for this, your content is great!! question: Do I need two smart contracts in case I want pre-sale and public sale or can I do both only with one smart contract?

[@Ludohs]

Great content 👍 i was wondering the order from creating the art to minting the project, could you tell me wich of your video in order would help me creat my 1st NFT collection ? Thanks and have a great rest of your day 🌞

[@HashLipsAcademy]

Code a NFT Minting Dapp from A-Z on Polygon network

[@dalgonacats1041]

Regarding the 'ONLY WHITELIST', I tried to change value to 'false' and it works properly in JavaScript VM. BUT when I tried to change the value to 'false' in Injected Web3, In the DAPP once click the 'MINT' button error occurred 'Warning! Error encountered during contract execution' Can you help this?

[@sergioamador8095]

Thank you very much for this fantastic tutorial. I have a question. If I add wallets to the whitelist ... how can I see later which are the addresses that are inside the whitelist?

[@TanHanWei]

The loophole wouldn't exist if we remove the safeTransferFrom function, right? Also, can the transfer be handled by Opensea's transfer function without writing our own safeTransferFrom function?

[@user-hk7wh9jm7l]

Hi. Would be awesome if you could make some tutorials about avoiding gas fees as much we can when we write a smart contract. I saw other guys that really have gas low fees than others

[@HashLipsAcademy]

Definitely will focus on that when we get to showcasing the gas levels of different functions

[@theonlykovan]

Hey, really a great video. I have a question, Should i keep my remix webpage in my browser without clearing history so that i can withdraw my balance from time to time? Or else i can clear remix history from my web browser and can withdraw it from the polygon or eth scan?

[@SpirituallyUnorthodox]

Thank You!!!

[@HashLipsAcademy]

You're welcome!

[@apemaniac6370]

I'm also watching ur video nft bee,scrawny. thankyou to All of u guys

[@FailFailz]

Really costly to store whitelist on array. Mapping is expensive too, but better. For low-cost whitelist, I suggest looking into merkle tree. This way you only have to store one 32 bytes long hash on the contract.

[@diogovski2565]

Any upcoming video showing integration of the presale contract on a website?

[@HashLipsAcademy]

We can do that but this already implements it in the contract so you only need to show it visually on the dapp

[@mohmmadanas5324]

This is amazing 🤩 I want ask how we can make another price for whiteliste users ?

[@BrianKHoward]

I would like a way to split the payments from the sales into 5 different accounts by different percentages. This would make it easier for partners to automatically get paid their portion.

[@HashLipsAcademy]

The next video will show how to do that

[@bobbychan9372]

I have deployed my smart contract without the presale whitelist function. If i want to add the presale whitelist function, should i replace the contract part with the presale version contract then deploy again?

[@freekfps]

Nice! It is possible to get the id of the NFT you bought in the dapp application?

[@HashLipsAcademy]

Yes you can use the wallet of owner function to get the array.

[@ICOReviewtoken]

Some NFT game projects use ERC 20 token like AXE to pay when minting NFT, can you guide this function?

[@ethiccash]

How would you whitelist the addresses (front end, manually)?

[@HashLipsAcademy]

In the previous video in the playlist you can see we call the white list Users function to do this

[@AnjarMoslem]

hi sir, how to verify the contract in etherscan? I'm always failed with verifying ABI

[@maqimmo9993]

How to make the button related to the ''mint''

[@lordmyrann]

Can I paste 1,000+ whitelist addresses into Remix or will I need another way to call it? Could I maybe read them from an external file?

[@LegitsTV]

so to withdraw the contract balance into my personal wallet, i have to do it through mixer?

[@HashLipsAcademy]

You use the withdraw function on remix or the contract on polygon or etherscan

[@LegitsTV]

@@HashLipsAcademy from what I understood, you said leave the withdraw button on etherscan alone because it will only add to the contract itself. Did you mean that if I do the withdraw from etherscan, the funds from the contract will be withdrawn into my personal address 🤔?

[@montanaflynn1390]

Would the gas to store addresses be really high? For example would saving 1000 addresses in the whitelist map would cost several eth?

[@sliph304]

Sadly as far as i saw with other whitelist contracts, gas fees for sending whitelist addresses to mainnet are higher than the deploy contract gas fees. Wish there was a way to provide a link containing whitelisted eth address so you could add ass much as you want but only pay like 5 bucks as gas fees

[@cryptoprofitstrategies1792]

@@sliph304 I think you can collect a whitelist of addresses beforehand and add them as an array into your smart contract before deploying it) It's madness that the gas fees are so high for such a regular transaction as adding whitelisted addresses, so we have to use a workaround like this. Maybe Daniel will come up with a better solution for all of us!

[@sliph304]

@@cryptoprofitstrategies1792 yeah, I thought about adding the whitelist addresses directly into the contract and then deploy them. It was a big gas fees saving?

[@cryptoprofitstrategies1792]

@@sliph304 I don't know, I haven't deployed mine yet either)

[@HashLipsAcademy]

Good question, and yes if you store data on the blockchain it does consume gas. On polygon this might be cheap but Eth will be a bit expensive. I will deploy the contract and work out the gas soon.

[@casualtrips9571]

If someone let's say for example won a giveaway and was holding a nft and the mint max is set to 1 can this person still mint 1?

[@osamahaldoaiss]

Funny how this is the Guide I am watching, after the Gooniez Mint Fiasco with the exact bug mentioned here 😂

[@TheHummChannel]

Hey nice video again thanks! I need help on the smart contract (present in your nerdy clone minter project) I tried to deploy on Polygon with remix every thing when find but when I try to deploy it in Ethereum Mainet it's keep telling me this "Invalid transaction params: params specify an EIP-1559 transaction but the current network does not support EIP-1559" thanks if someone can help🙏

[@HashLipsAcademy]

Please can this in our Discord. The most recent erc721 contract only takes on parameter for minting. Maybe that could be the issue

[@angiemartineaux9028]

I think it is impossible limiting the number of NFTs a person can buy. You can limit the number of NFTs an address can buy, but if a person has multiple addresses that person can buy many NFTs above the set limit. Am I right or wrong? The video is so great anyway, and it was quite smart spotting this bug

[@HashLipsAcademy]

That is true but those addresses will not be whitelisted

[@dghhyggffgrdfg3762]

Wow!! this is great, do you allow this smart contract to generate real nft?

[@AnjarMoslem]

17:00 : whitelists format

[@SkeemieTV]

How much for you to add this to my website?

[@savagetradez9567]

Is it real that the fee is 1200usd....I tryed mainnet and that is what it threw at me on the NFT contract

[@HashLipsAcademy]

Yes on Eth but on Polygon it's way less

[@akashmatania]

I was the one who messaged you about the 🐛, 😝 maybe you can send me one hashlips, jk😬😛

[@HashLipsAcademy]

Please send me your metamask address :)

[@akashmatania]

I have also added a addon, for example you can reserve your whitelist presale, ie those who are whitelisted , those tokens are reserved forever for them. They can mint that token whenever the gas fees are low

[@akashmatania]

@@HashLipsAcademy i have sent you my MM wallet address 😬

[@eazye7059]

Wow

[@HashLipsAcademy]

:)

[@bigwin_8518]

Please make this 'Dapp'(Injected web) version. Not JavaScrip VM but On Web version tutorial is helpful than JS VM. Especially, how to show "ERROR" text. Best,

[@ashwinshelton8938]

Hey can you get out a tutorial on how to use nft.storage ? Please

[@HashLipsAcademy]

Yes for sure that's in the pipeline

[@ashwinshelton8938]

@@HashLipsAcademy Wwoh I never thought you'll reply...I feel honoured thank you sir......