Why would you use Bitcoin offline, dude?
I wouldn't, but people are complaining that Bitcoin can't be used offline as easily as paper money
I am talking about making offline transactions possible (I see that you didn't learn to read)
In fact, I didn't think it all up. What I described in the OP was a real process how gold certificates came about. People deposited gold (now it would be Bitcoin) at an interest in a bank, and they got certificates confirming that they actually deposited so much gold there. Since these papers were payable to the bearer (i.e. they didn't have the depositor's name in them), they were used as a payment of debts between people and later got used as paper money for the exchange of goods
I get it, but first, the chance for banks to adopt bitcoin is too small. They have different interest to do/manage (fiat money).
If in the future, banks decide to adopt bitcoin and manage it as they did on gold, print paper bitcoin and hold the private key.
It sounds nearly impossible and too complicated, like u said, they could manipulate the number of bitcoin that they have.
Well, I don't like the idea of paper bitcoin. Physical bitcoin such as casascius, denarium or titanbtc seems more interesting for me.
Read hereIt is assumed that Bitcoin adoption will increase greatly in the future
If that should happen, then banks will get interested in Bitcoin and people will get interested in paying offline with bitcoins as well. In fact, I don't see anything complicated in that. When you borrow money from someone, you write an IOU. If you don't specify whom exactly you owe, then it is payable to bearer, i.e. anyone who gets it could come to you and demand payment. You pay out the debt and take back the IOU. I can't imagine anything simpler than this. Physical bitcoins and their keys are rocket science in comparison with this