Is the biggest threat to this project that Ethereum might not be able to scale to handle the amount of transactions/API calls that $Hydro will require with increasing adoption? Could someone point me to someplace this is addressed?
Great question - in addition to Shane's response, we also maintain an overarching design philosophy of minimal on-chain activity. We do this by onboarding users by storing information on-chain and then only relying on querying that data from that point on. This is how our 2FA mobile app under development is structured to scale while leveraging the Ethereum blockchain for security.