Webpage with coding and NFT

I have a domain on Bluehost with WordPress. Now I need to create a webpage itself or update a template.  


Description: The website is simple but with the integration of a couple of features that require some coding skills. The website will be dealing with crypto, crypto wallets, NFT, emails database. An example, user will input their wallet address, then it will be compared with a transaction database of previous purchases and further logic will do NFT transfers or generate a window/link to download a file. Also, there will be a checkout page taking crypto or $ as payment for NFT.

I will ask for support and fix bugs for 1-3 months after release.  


Requirements: 

1. The candidate should have coding experience working with cryptocurrency. 

2. Website creation.  


I'm not a company, just a regular guy from Ukraine with a very limited budget. The optimal budget for me is $300-600.

Additional details:

The general problem that I’m trying to solve is selling NFTs with hidden content from the public, which will be revealed to the purchaser, but still be hidden from the public. Then it will be up to the owner - reveal the content or not. I don’t know how exactly to implement this idea, so that I will need your expertise in crypto and coding. Slide 2.1 This page requires back-end coding and high attention to detail. Fail or bugs may cause huge losses for clients and me as a Website owner. The purpose of this page is to allow clients to receive the Master NFT (with hidden content) to their wallet after they purchased a Key NFT (that is visible and has on it a unique ID code) on platforms like OpenSea. The client will need to fill the form on page 2.1. Then he will receive Master NFT to his wallet. Logic: At purchase of the Key NFT, from OpenSea / ETH blockchain will be pulled transaction information (purchaser wallet address). This wallet will be assigned to the purchased Key ID code and stored in a database. When customer goes to the webpage and put his information on the form and click ‘Recieve’, the system should check his wallet and ID code. If a combination exists in the database, then Master NFT sends to customer wallet. 

Main questions:

- Is it possible to automatically send Master NFT after customer made a purchase of the Key NFT using the same principle of pulling transaction information? If so, there is no need for page 2.1 which is preferable. 

- During automatic sending Master NFT will it keep a hidden state?

This is the main part, other elements are simple.