Oldtimers Rent & Buy SC

Deploy Oldtimers (Rent & Buy) smart contract on EOS EVM testnet.

Usage

Pre Requisites

Before running any command, you need to create a .env file and set a PRIVATE_KEY.

PRIVATE_KEY = "..."

Then, proceed with installing dependencies:

yarn install

Compile

Compile the smart contracts with Hardhat:

$ yarn compile

Test

Run the tests:

$ yarn hardhat test

Deploy

Deploy the contracts to blockchain network (EOS EVM testnet):

$ yarn deploy --network eosevm

Verify

Verify the contract:

$ yarn hardhat verify --network eosevm "oldtimersrentbuy"

Oldtimers Rent & Buy SC Details

Oldtimers (Rent & Buy) SC is made up of experienced blockchain developers (team members) from the Oldtimers Offer platform. The SC is a Proof of Concept for Renting & Buying Classic Vehicles and belongs as a part of applying for the ENF Grant program. Our hard work is open source and helps developers a lot to create similar SCs for the marketplace on the blockchain (EVM is compatible, but our approach is strict to EOS EVM). It can be very easy to use for real estate, sea vessels, or book projects. Our approach is highly innovative in the blockchain industry and we are so proud of it. The solution is for renting, selling, and reviewing classic vehicles. The SC has the following advantages and rules:

• 1. Easy to list a classic vehicle on blockchain: Users can very simply add a vehicle to the blockchain. It is a free service.

• 2. Owner of a vehicle has privilege: The vehicle owner can add and change details of the vehicle. Except for simple details such as Exterior Color, Transmission, Miles,... the owner can set the option is the vehicle available for rent or sale (maybe both solutions) and what is the price for that.

• 2.b. An advantage in addDetails Function: When a vehicle is rented, the owner can not put an available for rent option and in that way, we build trust and reputation among application users. (Innovative Solution!)

• 3. Vehicle Reviews: In the smart contract exist the function "giveReviewScore" which allow users to give review points from 0 to 10 to some vehicle. The smart contract has a view function "getReviews" which allows us to see all points for some particular vehicle.

• 3.b. An advantage in Vehicle Reviews: The review point to a vehicle can give only users who rent that vehicle and the smart contract is secured so that users can make it only one time. In that way, we prevent some kind of manipulation. We have finally trusted review points on market (Innovative Solution!).

• 4. Service fee: We already mentioned that listing is free, but we put on our smart contract fee for renting and selling and in that way we create a profitable blockchain solution. The creator of the SC can change the fee for renting or selling. Also, with "accumulatedProfit" we can follow how much money make our application (smart contract).

• 5. Renting a vehicle (Innovative Solution!): During the creation of renting function in our smart contract we tried to make high light of the blockchain function. We certainly think that we succeeded in that. Why? Let's explain in the next step.

• 5.b Advantage in Vehicle Rent function: In our function, we covered the following issues: a. Only the owner of the vehicle can add or remove the vehicle from the renting list. That is a decentralized approach. b. The owner can't rent owned vehicle, and in that way, we secure a review score. c. When the user pays exactly or more for rent, the money goes automatically to the vehicle owner (smart contract calculated the profit). d. We map who rents the vehicle last and what time, on that way owner has clear evidence for the court if something happens with the vehicle (Innovative Solution!). e. The owner of the vehicle can't put an available-for-rent option at the moment when the vehicle is rented. f. We map how much is vehicle rented and which wallet address

• 6. Buying a vehicle (Innovative Solution!): During the creation of this smart contract, our idea was first to make a brand new smart contract only for buying a vehicle. After research, we find out that if we add the buying option we can not just have more options for owners of the vehicle but make the best covered smart contract for the marketplace. We decided to add that future as well. Let's explain in the next step, what we covered with buying a vehicle option.

• 6.b Advantage in Vehicle Buy function: In our function, we covered the following rules: a. Only the owner of the vehicle can add or remove the vehicle from the buying list. That is a decentralized approach. b. When the user pays exactly or more for buying the vehicle, the money goes automatically to the previous vehicle owner (smart contract calculated the profit). c. We map who buys the vehicle, in that way the new owner has the option to add details and a rent/buy option. The previous owner is automatically removed for that privilege.

Business Architecture

If you are confused because of the previous explanation, don't worry. We have prepared it for you Business Architecture. Enjoy! We are available for all questions at the email address office@oldtimersoffer.com