NameMarketplace

Elixir SDK team decided to build name marketplace showcase application. Name marketplace allows everyone who owns some name - list it for his own price. We decided to build backend part only by using our SDK and Elixir language. The app in future would act as a middleman between sellers and buyers,(but currently only selling functionality is supported). In order to sell a name - a potential seller would have to:

1. Make a Spend transaction, which includes a price and a name, that he wants to sell and he must put 10% of the payload's given price(could be adjusted by the owner of marketplace) in the amount of the transaction, this is a request service fee. This information should be included in a payload of a SpendTx, in a following format: price-name.
2. Make a transfer transaction after the spend transaction is verified and confirmed. User has 2 minutes(by default, could be set in a config.exs file, under :gc_time option in seconds) in order to transfer a name to us, otherwise he will lose his transferred amount.

Under-development section

This app will also provide functionality for everyone who is looking for some name to buy - name listing and buying in future.

A potential buyer would have to:

1. List all available names
2. Pick a desired name
3. Make a spend transaction, with a payload in following format: name-price , and amount of that transaction should be also equal to the price of the listed name + 5% service fee.
4. If the transaction is valid and our middleman still owns a given name - we will transfer it to the buyer.

Usage

1. Clone the project:

git clone https://github.com/DanielaIvanova/name_marketplace
cd name_marketplace

2. You have to set your own app configuration, like keys, network id , etc. An example config can be found in config\config.exs file.

3. After all things set up, we have to get dependencies, compile everything and run our project:

mix deps.get
iex -S mix

4. In the IEX shell, you will have to start the Websocket process:

NameMarketplace.start_link()

4. As the service is running, you can subscribe() for a defined middleman account, or you can subscribe("ak_someaccount").Subscribing will try to start listening for the incomming/outcomming transactions of the given account public key, by making use of Websocket protocol:

NameMarketplace.subscribe()