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Native secure entropy

This excellent blog explains the need for native entropy.

How it works​

TEN provides a "System Contract" (a contract deployed and known by the platform.) You can get the address of the system contract for our testnet here - "??".

The interface you must implement is:

interface IRnd {
    function getRandomNumber() external returns (uint256);
}

Example​


// TEN provides a system contract that provides a unique secure random number generator.
interface IRnd {
    function getRandomNumber() external returns (uint256);
}

contract CoinFlip {
    private IRnd rnd;

    // you have to pass in the address of the system contract
    constructor(address _rndSystemAddress) {
        rnd = IRnd(_rndSystemAddress);
    }

    function getRandomNumber() internal view returns (uint256) {
        return rnd.getRandomNumber();
    }
}