To receive anything, you must have an address (the public key).
All coins (UTXO) are associated with addresses which must have private keys.
It's impossible to only have a public/private keypair for the instant a transaction is being made because the UXTOs must be owned spendable by some public/private keypair while a transaction containing them is not immediately happening.
You clearly don't understand what you're talking about.
All coins (UTXO) are associated with addresses which must have private keys.
It's impossible to only have a public/private keypair for the instant a transaction is being made because the UXTOs must be owned spendable by some public/private keypair while a transaction containing them is not immediately happening.
You clearly don't understand what you're talking about.