I am glad to hear that you are doing well! Something that I have learned about the barter system is that it works best in a small enviroment, so if 2-3 neigbors barter then things will work...but bartering can become confusing when many people are involved.

I want to mention something that you sort of hinted at...many people are specialists and not generalists, which can make bartering more difficult.

Years ago, workers were generaists. If a man was in the livestock business he knew how to grow and cut hay, and feed it to cows, and then the cows had babies and the farmer raised the baby cows. But today a cattle man might only know a small segemate https://www.cleverism.com/ultimate-career-choice-generalist-vs-specialist/

The big problem with having a society that is filled with specialists is that when there is a financial hic-up (and the economy in Venezuela does have the hic-ups) Then the ecconomic engine stops. But the ecconomy is hard to start because people only know how to do one job. (its not like getting your car stuck in the mud where you can get a lot of people to 'push the car')

Does Venezuela currently have a postal system? https://en.wikipedia.org/wiki/Mail

In other news I used to think that crypto currencies were alot less restricted, but when communistic/socialistic china starts liking cryptocurrencies https://www.nytimes.com/2019/10/18/technology/china-cryptocurrency-facebook-libra.html , then I do not feel that crypto is a very safe investment