First, you will need to set up a Phantom Wallet and populate it with Solana. You will need a minimum of 0.25 SOL in your Phantom Wallet.

To create a store, go to https://underworldpics.io/create. From there:

Click the button that says Create/edit NFT Storefront.

First, choose your Underworldpics subdomain and click on Next

Next, Upload your logo.

Review your information, and then if everything looks correct, confirm and submit to link your wallets to your storefront and finish setting up.

A pop-up will come up to connect Underworldpics with your Phantom Wallet. Approve it.

1. Click the Create / Edit Your Store button.
2. Connect the Phantom Wallet associated with your existing Underworldpics store.
3. Edit your store's logo, colors, fonts, metadata, or subdomain, then click the Update button in the lower right corner.

1. Navigate to your store's admin page.
2. Click on the Add Creator button. It should be just under your store's logo/navbar.
3. Paste your co-creator's wallet address into the text field that pops up and click the submit button.
4. Approve the transaction that pops up in Phantom Wallet. It will take some SOL to do this.

Click on the Create button from your storefront, you will be redirected to the Create Section, which is intended for minting NFT assets.

Upload your content to use has an NFT.

Click on Continue to Mint

Next you'll add your content Title, Description, Maximum Supply and Attributes

Maximum Supply - allows you to choose between having a single NFT or multiple copies (prints) from this master edition asset. The main difference between Master Edition and prints is that each print is a numbered edition created from a master edition. Attributes - allow you to define custom properties (key/value pairs) that describe your asset. These attributes are later displayed when viewing the NFT in your wallet or marketplace of choice. For display_type, the default is string but you can also set this to date to hint to downstream tools to format this approprately.

Royalties - declare how you and/or your creators are compensated for your work.

Royalty Percentage - This option specifies, as a percentage, how much of each secondary sale (all sales after the initial sale) will be paid out to the creators. For example, 1%.

Creators Split - allows you to split proceeds from the initial sale between creators. To do this, you first need to add other creators to your store on the admin page.

Once done with royalties, click on Continue to review

Launch your creation - Click on PAY WITH SOL to start minting, it will deduct the cost of the transaction from your wallet. Throughout the process of creation, it may ask you to approve transactions in the wallet. After the upload is finished, you will see it in your collection.

It should be visible in your wallet. If you're Phantom wallet, it should be in the “collectible” section.

As of 1/13/2022 the cost for minting an NFT is between 0.01 and 0.05 SOL.

Once you have finished minting NFT assets, you will be able to sell them. Click on the Sale button in the header. After clicking on the Sale button, you will be redirected to a Sell section. It's intended for selling NFT assets. Here you can select the desired sale type, it may be an instant sale or an auction.

The instant sale allows you to sell a single Master NFT or copies of it at a single price. Other sale types are pretty identical, so you can follow up on this section.

Select which item to sell then select the List For Sale button.

After a successful publish you should see your item listed on the home page under Live Auctions or in the block below the header.

Go to the store that is hosting the auction.

Navigate to the store's Listings page and click on the listing for the auction you're interested in bidding in.

On the page for the individual listing, you should see a button on the right-hand side of the page under the details for that auction that says Connect Your Wallet. Click on this button. Approve the connection as this is not a transaction and will not cost any SOL.

After connecting your wallet, the button on the right-hand side of the page should now say Place Bid. Click on this button again.

Clicking this button will bring you to a section where you can set the details of your bid. This card will show the current bid price or floor price of the auction, depending on if anyone else has bid or not. It will also show the amount of time you have left to place a bid.

Under this information will be a text box to input how much SOL you would like to bid on the NFT. Enter how much SOL you would like to bid. As long as the amount of SOL you are bidding is more than the current bid, and your bid is larger than the minimum tick size of the auction, you should now be able to click the button that says Place Bid below the text box.

A transaction to place your bid will come up. Review this transaction, then if everything looks right, approve it. The amount you bid will be instantly deducted from your wallet. The UI may get stuck loading at this step, but if you see the transaction in your wallet, it should be safe to reload the page.

If you have already placed a bid on an NFT and someone else outbids you, you can raise your bid. To do this, navigate to the auction's listing and click the Place Bid button once more. Counter with a higher bid; the additional amount will be deducted from your wallet. For example, if you bid 1 SOL on a piece, that 1 SOL will be immediately deducted when you place your bid. If someone outbids you and places a bid at 1.5 SOL, and you counter with a 2 SOL bid, the 1 SOL that you raised your bid by will be immediately deducted from your wallet as well.

Navigate to the listing for the auction you previously bid on. This should be under the Listings page for the Underworldpics store that hosted the auction.

Click on the listing for the auction you have bid on. Check that the Phantom Wallet wallet that you placed your winning bid with is connected. You should see a button appear on the right-hand side of the page that says Redeem. Click this button.

Check your Phantom Wallet. The money should appear in your Phantom Wallet as Wrapped SOL within a few minutes.

Navigate to your Underworldpics store's Listings page. Ensure that your Phantom Wallet is connected.

Click on the listing for the auction that just finished. You should see a button that reads Settle Auction on the right-hand side of the page. Click this button, then check your Phantom Wallet.

Navigate to the listing for the auction you have just won. This should be under the Listings page for the Underworldpics storefront that hosted the auction.

Click on the listing for the auction you have won. Check that the Phantom Wallet wallet that you placed your winning bid with is connected. You should see a button appear on the right-hand side of the page that says Redeem. Click this button.

A Phantom Wallet transaction will pop up for you to receive the token. Approve the transaction; this will cost a very small amount of SOL.

Navigate to your Underworldpics store's Listings page. Ensure that your Phantom Wallet is connected.

Click on the listing for the auction that just finished. You should see a button that reads Reclaim Items on the right-hand side of the page. Click this button.

A Phantom Wallet transaction will pop up for you to receive your token. Approve this transaction; it will cost a very small amount of SOL.

A popup will also appear on your Underworldpics storefront warning you that reclaiming an item could affect outstanding bids. If you have not received any bids, you should have no problems and can close this popup.

Underworldpics allows users artists to receive cryptocurrency donations. Coinbase Commerce is the platform we are using to power the donation process.

https://commerce.coinbase.com/signup

Log into your Coinbase Commerce account: https://commerce.coinbase.com/signin

Click on the Accept payments button on the left sidebar

In the popup, click the Accept Donations button

Enter an Organization Name and Brief Description. You'll want to use a name and description that describes the purpose of the donation from Underworldpics.io.

After selecting an appropriate Organization Name and Brief Description click Next.

We suggest that you click on Don't collect any information, but this is up to you to decide.

Click Done once you've selected the desired options.

Copy the link that can be found under Share a permanent link to a hosted page. You need to paste this URL in the Coinbase Checkout URL textbox for Wallet Address Settings.