A simple chain which restricts blockchain addresses ending with letter s
Branch: approach-1-sdk-fork
In this approach, I essentially forked the v0.47.3 tag of cosmos-sdk (tagged it v0.47.3-bank.rev-1), and added validation check in Send and MultiSend keepers which prevented address ending with letter s from recieving funds.
Branch: approach-2-ante-handlers
In this approach, I created a module x/address which defines an Ante Handler that looks for MsgSend and MsgMultiSend messages in a transaction. If present, an error is returned if the reciever's address ends with the letter "s".