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Verifiable Randomness Function

Unfortunately at the moment there is no way to generate randomness using ink! The available options are:

  • Creating a VRF oracle contract that will generate randomness.
    • (DIA is working on it for Astar.)
  • On the runtime level, adding a Chain Extension to the RandomnessCollectiveFlip pallet so it's accessible within ink! contracts.
    • Astar team is working on this.
  • Add a function in the ink_env to retrieve the current and previous block hashes, on which to base randomness.