I believe something similar still exists in banks in my country. You make a deposit for a long period (a year or several years) during which you will not be able to withdraw money from the account, where the bonus is higher interest on the deposit. If you withdraw before the end of the deposit, all bonus interest will be lost. Perhaps this is not exactly what you are talking about, because it is not a complete freezing of the account for a certain period of time, but I can’t remember anything more similar.

I am not a supporter of using banking services and such deposits don't seem profitable to me at all, because you lose control over your assets (the impossibility of profitable investment that suddenly arises), and the accrued interest is simply ridiculous (lags behind inflation).

If you want a profitable concept with freezing money, beneficial for you and without the temporary opportunity to use this money, then maybe you should pay attention to investments? Like in the securities market or cryptocurrencies? The invested money is frozen until a profit is made. This will certainly be more profitable than storing money in bank deposits.