Can consensus take place between only 2 peers?
Scenario: I am a patient who is visiting a doctor and all the communication/transaction between the both of us happen via a blockchain based app. So the transaction at that time would mainly be about my diagnosis, medicines prescribed and so on. And before this data gets committed on the ledger it needs to get validated via a consensus algorithm. So how would consensus take place in such a scenario.
All the suggestions/helps/comments are appreciated and welcome. Thanks!