HRC721 Token - How to deploy
How to deploy a HRC721 contract (NFT)
This project is an implementation of NFT (non-fungible token) based on ERC721 and OpenZeppelin. You can use it to issue your own NFTs and build corresponding DApps on Hydra chain.
We will use a QRC721 template, based on ERC721 and OpenZeppelin templates. Download this project and install dependencies, like this:
$ git clone https://github.com/qtumproject/QRC721Token.git
$ cd QRC721Token
$ npm install
The QRC721 template tree will be installed in the
QRC721Tokenfolder. There is no need to edit anything in the template.
For npm to work you need to install nodejs, which will also install npm.
- 1.Install the Solidity compiler. You'd better install it from a binary package or the source code. Before you install the compiler check in the headers of the
QRC721.solfile and of the imported OpenZeppelin templates which version of the compiler you will need. In our example SOLC 0.5.5+commit.47a71e8f.Linux.g++ was used.
- 1.Start the full Hydra node with GUI (hydra-qt -testnet). You should have some Hydra coins in the node for contract gas.
- 2.Solar can deploy QRC721 and ERC721 contracts, so for using it with Hydra the source code of Solar should be changed to make the proper RPC calls to our Hydra full node. Then the command
solar deplycan be used. Instead we will use the command with a different option
solar compileto only compile the template and get the BYTECODE and ABI. The command should be run in the
solar compile contracts/QRC721.sol
3. Using the Hydra full node with GUI (
hydra-qt -testnet) and the BYTECODE and ABI you can now deploy your HRC721 contract. You will be able to enter the name and symbol of your smart contract after you populate the ABI field on the Smart Contracts > Create contracts tab of the Hydra node. Also select in the field “Sender Address” the address that will pay for the contract and push the button “Create Contract”. Wait for a confirmation on the blockchain for the contract to be deployed.