![image.png](https://cdn.steemitimages.com/DQmR8ujehTE9HHB4Gbph8YqvVqPzgX8wd43SVBX1n24P1eT/image.png) [Source](https://pixabay.com/es/illustrations/tablero-escuela-pizarra-vac%c3%ado-73496/)

Personalized greetings to each of the members of this great academy, moderators, and teachers, I read carefully the very good conference I will begin to answer the instructions that the teacher. @awesononso sent. ![Separador8.png](https://steemitimages.com/DQmVSCKpwxyxCFxQ9anTLc28nRNjH89HSWwzDJ8W6kSiLZs/Separador8.png)

What is a cryptocurrency?

Cryptocurrencies are digital currencies whose value is determined by the supply and demand of the investor, since the appearance of Bitcoin on January 3, 2009 at 18:15 hours, altcoins such as Ethereum, Das, litecoin, etc. began to come out. Each of these on a blockchain and a smart contract, we can see today thousands of cryptocurrencies, token, high and low capitalization different types of tokens such as the ERC-721 The ERC-20 and stable currencies such as USDT, BUSD, which despite the volatility of other currencies these remain in a stable value 1USDT = 1USD American, The Btc has a practical purpose to get out of the way all intermediaries, establish an effective and transparent decentralization, give security and confidence to the user and never depend on a centralized financial institution, in terms of transaction fees is much cheaper than traditional ones, offers speed at the time of transactions and available 24 hours a day, 7 days a week, 365 days a year. Currently we can see different networks or blockchains other than Bitcoin, for example TRON, SOLANA, STEEM, Ethereum. ETC. offer smart contracts one is cheaper than the others and offers more speed but always each of them offers something that the others do not have, always trying to innovate and solve problems that other networks have such as scalability by implementing some kind of consensus different from other networks. All trading orders, regardless of where you do them in a centralized or decentralized exchange, are stored in a blockchain order book, they are free and can be reviewed at any time by anyone in the world, the identity of the user remains anonymous while the transfers are freely published. ![Separador8.png](https://steemitimages.com/DQmVSCKpwxyxCFxQ9anTLc28nRNjH89HSWwzDJ8W6kSiLZs/Separador8.png)

What is cryptography and how does it make cryptocurrencies secure?

They are used through complicated mathematical equations using Algorithms these encrypt a given information which can not be casualized by anyone on the network, if not by the user receiver these encrypted alpha numeric ie letters and numbers to make it more secure. One of the platforms that uses this encryption mechanism is Steemit something extremely important to hide some information and that only the receiver can read using your private key ie we can send information to a user x using our private key while the receiver can read without problem using your private key other users will only see encrypted codes. The security offered by cryptography is very important because it gives confidence to the user to continue using the platform using a mechanism of algorithms confirms the transactions this is carried out thanks to the interconnected nodes or miners that through a mechanism of work or proof of participation forms a mined . a block is created by the hash of each of the transactions, really security is every time a very important factor for the digital ecosystem Cryptografico . and cryptography is the protagosnista and source of ecosystem security. ![Separador8.png](https://steemitimages.com/DQmVSCKpwxyxCFxQ9anTLc28nRNjH89HSWwzDJ8W6kSiLZs/Separador8.png)

Explore the Steem Genesis block and log in as a completion test.

For the explore steem genesis block let's go to the following web page, https://steemworld.org We should start section: ![image.png](https://cdn.steemitimages.com/DQmXNJSjWBNDLJ88gkwQ56k8QN2DrCWVMsvjwr8MaY5Epgt/image.png) [Source](https://steemworld.org) We must log in with our posting key, Then select Block Explorer. ![image.png](https://cdn.steemitimages.com/DQmcivmEcbXkDNySGnmZCkWeh7UJdg9Uw3zGY4pxZENpRWT/image.png) [Source](https://steemworld.org) We have to place block 1 genesis ![image.png](https://cdn.steemitimages.com/DQmcHDR6x9yfA75Tr49MYruztfKHPjztoDPjBZcjLfU4YCo/image.png) [Source](https://steemworld.org) We can see all the characteristics of block 1 genesis. ![image.png](https://cdn.steemitimages.com/DQmXB9GZpu6JGpGU7umS8ZHV3tizHYu8X4smASBLuA3xjzM/image.png) [Source](https://steemworld.org) Timestamp: 2016-03-24, 11:35:00 Block Id: 0000000109833ce528d5bbfb3f6225b39ee10086 Previous: Id 0000000000000000000000000000000000000000 Signing Key: STM8GC13uCZbP44HzMLV6zPZGwVQ8Nt4Kji8PapsPiNq1BK153XTX Witness: initminer25 Witness Signature: 204f8ad56a8f5cf722a02b035a61b500aa59b9519b2c33c77a80c0a714680a5a5a7a340d909d19996613c5e4ae92146b9add8a7a663eef37d837ef881477313043 Transaction Merkle Root: 0000000000000000000000000000000000000000 Extensions: [] ![Separador8.png](https://steemitimages.com/DQmVSCKpwxyxCFxQ9anTLc28nRNjH89HSWwzDJ8W6kSiLZs/Separador8.png)

Conclusion:

Currently every time they are expanding the knowledge of cryptocurrencies, which are for what they serve, education is a fundamental part for users and for new participants who continually enter the decentralized ecosystem of the blockchain, However, we see that this business is quite risky so they must first prepare themselves academically to operate within the platform, so you should know the main thing that we talked about in the past questions of this conference, remember that in the digital world there are many strategies used by large companies or corporations through psychological processes to take advantage of those inexperienced users or those who do not know what cryptocurrencies are. in the report that I made I spoke in detail about all the points that the professor dictated to us clearly and directly to the point so that it is understandable for each of the participants both for the users of the introductory part as for those of intermediate and advanced classes explained quite clearly face one of the assignments I give as culminated my task number 3 of the academy and certify that each of this content is totally unique and free. exclusive of steemit. @nane15