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On Nimbora, keeping track of each processed batch is crucial. Since Starknet and Ethereum are asynchronous in their essence, we need a mechanism to synchronize the contracts state between both chains. To achieve that, each processed and closed batch sent from L2 to L1 contains an epoch. This way we ensure that:

  • Batches are processed in the correct order.
  • No batch can be processed more than once.