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Professor @stream4u's lecture is very excellent I am going to make my contribution of assignment 5 for this week's academy free assignments.

What is cryptocurrency?

Cryptocurrencies are divided into 2 assets digital tokens and coins, they are not the same each one fulfills a function usually the coins can be mined use their own blockchain and some are unlimited or limited, for example bitcoin is a limited and minable currency from them and their ecosystem are born Tokens through smart contracts based on these networks for example Ethereum is born after Bitcoin offering smart contracts can create tokens ERC-20 O ERC-721 that would be the NFT token not fungible.

The supply in the market provides a volatility in the price never cryptocurrencies unless it is a stable currency, as for example the USDT, will always be at a fixed price. since its value is determined by the supply and demand of purchase and sale orders that are created in the ecosystem.

Cryptocurrencies such as bitcoin was created with the aim of not relying on centralized financial institutions where the cost of payments by transfer fees to third parties or international, with the advent of the bitcoin everything is much easier plus we avoid large amounts of paperwork and commissions we have at our disposal the assets in bitcoin to be transferred when and where we want, we save the high sums of money in transaction fees.

Every time the bitcoin reaches more places in the world however there are countries that try in some desperate way to block the use of cryptocurrencies, but one of the advantages of Bitcoin is that it is totally free and decentralized so you can use it wherever and however you want anywhere in the world where you have internet connection.

The security of cryptocurrencies depends on its blockchain, basically the decentralized ones are the safest because its ecosystem is not focused on a single server base but on interconnected nodes called miners, these by means of powerful hashes create and evaluate each transaction which in turn is verified to validate or reject it. Through this process each node passes the information to the next to make a sequence of information. Once verified and validated a block is created with each hash, these are stored in the order book of the blockchain which can be viewed in real time.

The wallets are very necessary to store, store, accumulate cryptocurrencies there are several variants hot wallets and cold wallets then the paper wallet has been created where through a QR code is printed and you can, the only problem is that if you lose the printed paper you lose the funds. And in the cold wallets if you lose the secret key or secret words you also lose the account because it can not be recovered. while in the hot wallets are usually Exchange where if you can recover the latter are more dangerous to accumulate and holdear. as the exchanges are usually centralized.

The advantages and disadvantages of holding cryptocurrencies:

Advantages:

Decentralization is a pretty nice advantage to use our assets whenever and wherever we want without depending on someone else to do it.

You can log in the only requirement is to have internet and a device to be able to access the wallet.

Security is quite good because of this depends on the acceptance and trust in the project and above all the prolonged use by users.

It does not depend on a third party in my opinion this is what I like most about decentralized ecosystems.

Disadvantages:

if you lose the secret keys of the cold wallets you lose all the assets stored in it.

If by suport a centralized Exchange decides to just scam you lose all the assets in it.

For money laundering, extortion and kidnapping, cryptocurrencies are very well suited.

Market volatility not anyone just buys BTC and trades the market you must plan , study and grow in the digital ecosystem. at least the basics.

How would you like to see cryptocurrency in the future?

In the last few years of study I have seen, many users enter the ecosystem and have lost almost that 50% of their trading capital out of sheer ignorance, therefore I have invited them to study within the Steemit academy, according to my future view of cryptocurrencies I hope they are not so manipulated by whales, creating false patterns, to try to distract the true market trend in terms of an asset this is always going to happen. as for market volatility this depends on the users and their offerings that are created in the market.

I would like to see in the future, currencies more accepted by government entities around the world. since this for me is the single currency and is free that each of us can rely on their assets when and where we want at low cost of gas. also that each ecosystem can solve the problem of scalability and compatibility between tokens.

I would like that Venezuela and other countries of the americas could implement methods based on the blockchain for example this would end the inflation of some southern countries, they could also implement a voting system based on the blockchain where the results are seen in real time through the blockchai, ie a mechanism to solve all the irregularities that occur in the polling stations of a country in general this mechanism would be accepted immediately by the world's population. This mechanism would be immediately accepted by the world population, since it cannot be manipulated and each user could vote and his vote would be anonymous and could be registered with his identity card and fingerprint anywhere in the country.

The purchase of products and fuel for cars could also work with a decentralized digital free system, this is something innovative where cryptocurrencies can play a fundamental role in the ecosystem of a country and solve many problems. this is the future I would like to see in my country VENEZUELA.

Conclusion:

Cryptocurrencies are still very young and there is still a lot to believe the acceptance of users is already happening and we can see it in stores that accept for example SLP, SHIB, BTC and much more that are currently implementing methods to work with them. In my country there are several businesses and is of South America in other countries for example in Paraguay and legalized the cryptocurrency so there is not much for other countries to adopt this mechanism would fix many problems especially inflation, in the United States in some states are already implementing similar methods for example in New York and Miami, has raised funds of up to 10 million dollars thanks to cryptocurrencies.