Q: Which blockchains do you support?

We currently offer support for the following blockchains: <ul> <li>Ethereum: Standard NFT Contract, Dynamic NFTs and Staking</li> <li>Polygon:Standard NFT Contract, Dynamic NFTs and Staking</li> <li>Avalanche: Standard NFT Contract</li> <li>Fantom: Standard NFT Contract</li> <li>Binance Smart Chain: Standard NFT Contract</li> <li>Solana: Standard NFT Contract</li> <li>Multiverse X (Elrond): Standard NFT Contract</li> <li>Q Chain: Standard NFT Contract</li> </ul>

Question 1

How to upload a collection to IPFS?

Accepted Answer

We currently only handle collections of 24GB or less but you can still deploy a smart contract by uploading your collection to IPFS yourself. This 4 step guide will help you through the process.

Step 1 - Uploading the assets folder

You will need to create an account on one of the services below to upload your files to IPFS. Once your account is created, you will need to upload the assets folder.

Once uploaded, you should see an IPFS cid. Save this value somewhere since we will need in the next step.

https://filebase.com/

Step 2 - Regenerate your metadata

Visit https://nft-generator.art/metadata, click "choose file" and find the file named metadata.json in your metadata folder. This should populate the collection name and description if you had one. In the "Image Url Prefix" text box, you will paste the following information: ipfs://REPLACE_WITH_CID_FROM_PREVIOUS_STEP/ (do not forget the ending /) and click "Generate". CID FROM PREVIOUS STEP

PASTE ON "Image Url Prefix"

Step 3 - Upload the metadata

Repeat Step 1 but select ALL the metadata files (complete folder) that you just regenerated.

Step 4 - Smart

Question 2

How much does it cost to deploy a smart contract?

Accepted Answer

To deploy a smart contract using onemint you will only need to pay gas fees. Onemint does not charge to create a smart-contract.

Question 3

How long does it take for my NFT to appear on Opensea?

Accepted Answer

There are two ways to import a collection to Opensea: by creating a smart contract or by manually uploading your images. When you deploy a smart contract, Opensea will automatically import the collection after the first NFT has been minted. As more NFTs are minted, they will gradually appear on Opensea.

If you see your NFT on Opensea but the image or name is not displayed, you may need to refresh the metadata. To do this, follow the instructions in this article: How to refresh the metadata on Opensea?

Question 4

Which blockchains do you support?

Accepted Answer

We currently offer support for the following blockchains:

Ethereum: Standard NFT Contract, Dynamic NFTs and Staking
Polygon:Standard NFT Contract, Dynamic NFTs and Staking
Avalanche: Standard NFT Contract
Fantom: Standard NFT Contract
Binance Smart Chain: Standard NFT Contract
Solana: Standard NFT Contract
Multiverse X (Elrond): Standard NFT Contract
Q Chain: Standard NFT Contract

Question 5

How to verify a smart contract?

Accepted Answer

First go to contract and click "verify":

When verifying a smart contract on Etherscan or Polygonscan, those are the options you need to specify:

On the next page we set optimisation to "yes"

Now we go to step 4 on our dashboard and find the smart contract source code:

We copy the contract source code and we paste it on ETH/Poly scan:

We now delete the constructor ABI displayed as an example on ETH/Poly scan:

And we copy our constructor ABI from step 4 under the smart contract source code:

Once all this has been done we can click verify and it will be done.

After verifying you can activate the proxy features of the contract to be able to interact with it: [Activate proxy features on a contract](/en/article/activate-pr

Question 6

How do I upload my collection to opensea?

Accepted Answer

Marketplaces such as Opensea are like Ebay, they are a platform for people to resale their NFTs. The majority of NFT collections first do what is called an "initial sale". An initial sale happens from the collection website where people can buy one or many NFTs, also called minting. Once an NFT is minted, it will automatically appear on marketplaces like Opensea where you can choose to resale your NFTs.

In order to do an initial sale, you have to first deploy a smart contract. A smart contract is required because this is where the NFT ownership is stored and can prove you are the owner of which NFT.

Your alternative is to upload your entire collection to Opensea manually (it cannot be automated) or deploy a smart contract and airdrop the entire collection to yourself (costly).

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