$XEC Satoshi emphasized the need for a system where nodes agree on the temporal order to maintain the integrity of transactions. eCash takes this idea and optimizes it for modern use cases by integrating Avalanche, which allows nodes to coordinate faster and with less energy consumption than PoW. Essentially, eCash addresses the same consensus problem that Satoshi described, but with a different technical solution, adapted for fast payments and scalability. 💳💲