This contract allows users to generate Basic Bandwidth Credentials (BBCs) on the Nyx blockchain using ERC20 NYM as payment, utilising the Gravity Bridge for cross-chain payment.

By default 1 NYM = 1 GB of bandwidth. The ratio of NYM - bandwidth is denominated in bytes, and represented in the smart contract by the BytesPerToken variable. This variable can be adjusted by the contract owner.

The amount of bandwidth bought is calculated according to the following formula: (Token amount in 'wei' * BytesPerToken) / 10**18

Usage

npm install
npx hardhat compile
npx hardhat test

If you are planning to interact with contracts on either Rinkeby or mainnet, or deploy new contract instances, create an .env file with the following:

RINKEBY_URL=https://rinkeby.infura.io/v3/<INFURA_KEY>
MAINNET_URL=https://mainnet.infura.io/v3/<INFURA_KEY>
PRIV_KEY=<YOUR_PRIVATE_KEY>
ETHERSCAN_API_KEY=<ETHERSCAN_API_KEY>

Deployed addresses

Find deployed instances of the smart contract on the Rinkeby testnet and the Ethereum mainnet in contractAddresses.json.

This json file is automatically updated when any of the scripts in scripts/mainnet or scripts/rinkeby are run.