I’m a newbie here. After reading Minimal Viable Plasma, i am wondering about the confirmation signatures.
The process for sending a Plasma coin to someone else is as follows:
- Ask them for their address.
- Send a transaction that sends some of your UTXOs to their address.
- Wait for it to get confirmed in a block.
- Send them a confirm message, signed with the keys that you use for each of > your UTXO inputs.
I couldn’t figure out why we need the step 4, what possible problems can it solve.?