Nowver NFT

This project is a basic Nowver NFT ERC1155 token. It comes with a NowverERC1155 contract, tests and deployment scripts.

Install the dependencies

This project uses npm and hardhat To install dependencies, run npm install

Compiling the contract

To compile the contract, run npx hardhat compile. To force the compilation, run npx hardhat compile --force

Testing the contract

This contract comes with Unit Tests using Chai. To run the tests, run npx hardhat test --network localhost

Interacting with the contract from the CLI

Hardhat allows us to configure tasks that can be run in the hardhat CLI.

The following tasks have been declared:

• uri
• set-uri
• register
• mint

Tasks are configure in the hardhat.config.js file and can be listed using npx hardhat help:

npx hardhat help
Hardhat version 2.6.4

Usage: hardhat [GLOBAL OPTIONS] <TASK> [TASK OPTIONS]

GLOBAL OPTIONS:

  --config              A Hardhat config file.
  --emoji               Use emoji in messages.
  --help                Shows this message, or a task's help if its name is provided
  --max-memory          The maximum amount of memory that Hardhat can use.
  --network             The network to connect to.
  --show-stack-traces   Show stack traces.
  --tsconfig            Reserved hardhat argument -- Has no effect.
  --verbose             Enables Hardhat verbose logging
  --version             Shows hardhat's version.


AVAILABLE TASKS:

  accounts              Prints the list of accounts
  check                 Check whatever you need
  clean                 Clears the cache and deletes all artifacts
  compile               Compiles the entire project, building all artifacts
  console               Opens a hardhat console
  deploy                Deploy contracts
  etherscan-verify      submit contract source code to etherscan
  export                export contract deployment of the specified network into one file
  export-artifacts
  flatten               Flattens and prints contracts and their dependencies
  help                  Prints this message
  mint                  Mints a new token for a given token type
  node                  Starts a JSON-RPC server on top of Hardhat EVM
  register              Registers a new token with a limited supply
  run                   Runs a user-defined script after compiling the project
  set-uri               Updated the contract's metadata URI to the provided URI
  sourcify              submit contract source code to sourcify (https://sourcify.dev)
  test                  Runs mocha tests
  uri                   Updated the contract's metadata URI to the provided URI

Deploying the contract

When using a local development node, you don't need any wallet to run the project. When using a live Ethereum network (in our case, Polygon Mumbai testnet), we need to configure the two following variables in hardhat.config.js :

• const MUMBAI_RPC = 'https://polygon-mumbai.infura.io/v3/1ffba0d1c5974cb9a79370247af998a4';
• const DEV_MNEMONIC = process.env.NOWVER_MNEMONIC || '';

Then we can deploy the contract using the following command:

npx hardhat deploy --network mumbai

Nothing to compile
Deploying Nowver from deployer 0x20BfE90996ED4ce6382E75A85B3d6989D5Eaf814
contract Nowver deployed at 0xF1700F4A6acb9D32dfE2481572F5F71e9eC8482D using 2365280 gas
transaction hash: 0x11c1b26ab54210434d88386c9dd2a7529759a450f7a591706de5ae6cc8ccbcd7, block number: 19542421

We can also use the --reset flag to force deploying the contract again :

npx hardhat deploy --network mumbai --reset

Nothing to compile
Deploying Nowver from deployer 0x20BfE90996ED4ce6382E75A85B3d6989D5Eaf814
contract Nowver deployed at 0x6e1a05D4F3f87891CE7EFF1EaBA0684EF2b8b216 using 2365280 gas
transaction hash: 0x23df58a6563d842acbf13c5a4d4fbb5bc358233e2a7df73d104c2302b8cf4ab2, block number: 19542500

See the address of Nowver contract changed from 0xF1700F4A6acb9D32dfE2481572F5F71e9eC8482D to 0x6e1a05D4F3f87891CE7EFF1EaBA0684EF2b8b216