# How it Works

## The Business Model

The business model is similar to any marketplace or exchange. The DOOR user (Seller) has a valuable product (Data) and is publishing to an open marketplace Door+ network. The Advertiser (Buyer) is looking for new customer opportunities (Leads) and will buy Data on the marketplace.

## The Transaction Process

The User Data lives on the Door+ network. The Advertiser who has already configured their account will be able to serve their ads to users whose intention data is most likely to resonate with the advertiser's content. The advertiser's daily DOOR ad spend is contributed to a daily reward pool. When there is a match, the transaction is executed, and DOOR is transferred from the Reward Pool to the User's Balance.

## How many Advertisers will have access to the Property Data?

Currently, there is no limit set to how many advertisers can license data from the DOOR+ user base.

## Is the Transaction between User and Advertiser on the Ethereum Blockchain?

No. There are two primary reasons this is not feasible. The first is the cost of Gas fees (Ethereum network transaction fees) is too high. The second is the inability to scale. The best way to explain is to refer to a common use case. When a User registers on the DOOR+ app, their data could be licensed by hundreds of advertisers. This would essentially create 100+ transactions (very small amounts of Door per transaction) being paid to the User. Each one of those transactions would be from a unique wallet, and since the transaction fees would most likely be greater than the cost of the DOOR Token, it is not feasible. Instead, the architecture allows for the balance of DOOR for every account to be maintained in a central database, but still visible on the Ethereum blockchain under the Door Holding Account.&#x20;

When a user wants to withdraw or deposit DOOR from/to their balance, then it will be seen as a transaction on the Ethereum blockchain. All DOOR Tokens will be accounted for on the Ethereum blockchain since the Holding Account will have a dedicated wallet that will match the current Balance in the Door App.

![](https://1831135173-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MWyCHPLrSjh7rj1JLLi%2F-MWyo1ZW39dw1dwj30Bu%2F-MWzKu6LlopYTtv042Wv%2Ftransactions.png?alt=media\&token=c720e71d-8b17-4878-b55c-b8ce665b6f25)
