We are currently in the process of developing a payment plugin for merchants to accept crypto payments. We are currently generating a unique order for every order which is placed in the merchant store. We easily implemented BTC, BCH and LTC since they support multiple UTXO transactions.
I went through most of the posts in the forum and noticed that this is not possible in ethereum using JSON RPCs just outside the box. Can someone please guide me if there is an alternate way to implement transactions from multiple addresses to a single address using Ethereum or if there is a better way to deal with merchant based transactions?