The xDai stable chain features an on-chain RNG based on RANDAO. It may be leveraged by smart contract developers to introduce random numbers into their applications. Note that random numbers are limited to certain blocks in the current implementation. See below for more information.
RandomAura is an upgradeable contract, so it includes both an implementation and proxy address. To access, utilize the proxy address (RandomAuraProxy) along with the ABI of the implementation contract (RandomAuraCode). Seed values are read from the proxy contract.