Well, it's not quite how it works in today's world
As in today's world most money is created by commercial banks through credit. It is actually a fascinating system as money gets created when the economy most needs it ("for needs related to business transactions") as well as destroyed as soon as the latter doesn't need it any more. Indeed, the central bank still plays a significant role in this process, but it only interferes if the system gets out of balance and can't readjust itself on its own
If what you mean is to print banknotes not by underlying gold or USD but by guaranteeing productive projects, then I hope that there is a government that dares to carry out this revolutionary strategy. Now there is the emergence of anti-mainstream economic theory that is counter to Keynesian economic theory because it is considered ancient and not applicable.
Since 1971, the United States has not printed dollars with an underlying gold. China has two currencies namely Renmimbi and Yuan. One of the two currencies is the official currency of the Chinese trade, while the other is part of the main currency, so both are the same and only have different mentions. That's according to general knowledge, but in truth the two are different from their own currency while the yuan itself.
Renminbi in the country, and Yuan abroad. In its application Yuan is printed based on IMF regulations with underlying debt, USD, gold, etc. while Renmimbi is printed based on the project. The simulation is like this. The Chinese government is targeting Vietnam to be included in its OBOR program. So China will lobby so that the Vietnamese government makes many infrastructure or manufacturing projects in the long run, such as toll roads, airports, power plants, or the metal processing industry. China will be happy to finance the project by starting to print Renmimbi for the amount of the project.
But China will require, the technology must be 100% from China, 100% of the raw materials must be from China, even if the workforce can be 100% from all China. Once the project is completed, China only needs to wait for Vietnam to pay China by using the dollar, every dollar that comes from the project's payment then the dollar bill will be destroyed to avoid inflation. Because the foreign exchange dollar continues to enter the Yuan value will be stronger. Therefore China is carrying out large-scale industrial development in the country to sustain its expansion to many countries. That is an explanation of what China has done for Yuanization and after almost four decades China began to adjust the renminbi to Yuan to 1:1.
What if this strategy was copied by Vietnam to solve its domestic problems without debt. The illustration is that the country of Vietnam will build 1 million livable homes for the poor. and for this project, 10 trillion is needed. then the Central Bank of Vietnam scored 10 trillion. The 10 trillion was handed over to the official in charge of building houses (the public works department) and then the money was used to build housing until completion. But all raw materials must be from local Vietnam, so that the steel industry, cement industry, industry, bricks, paint industry, and Vietnamese workers enjoy the results of printing money.
After the project is completed and the house starts to be sold, the money generated from the sale of the house must be returned to the Ministry of Finance up to 10 trillion Dong (VND), and each dong that enters from the project will be burned immediately. If it practices like this, it will not cause inflation in Vietnam.
So the printing of the underlying money is not gold or dollars but projects owned by a country. It's just that the state must make strict safeguards against the use of money so as not to be misused. China and America have carried out this practice so far.