Hello friends how are you I hope you will be fine and live a peaceful life? This is my homework post for the fixed introductory courses Task 3. Which is about the Genesis Block.

• What is Cryptocurrency?
• What is Cryptography and how does it make cryptocurrencies secure?
• Explore the Steem Genesis Block and Sign in as proof of completion.

What is Cryptocurrency?

Cryptocurrency

A cryptocurrency is a form of digital currency. Today is the age of technology. Technology has revolutionized the world. with the advent of technology, the way of life has changed. Everyone has moved their business to a computer and you can order anything in any part of the world through the computer. Similarly, cryptocurrency is one of them and we use it for online trading and we can buy things to meet our needs.

In the past when we used to buy something we used to pay gold for it but today we are able to do it. We can use cryptocurrency for whatever we do and it is very big in the world of internet success. Cryptocurrency is a digital currency and we use it to buy goods and it is built with the help of blockchain technology. Cryptocurrency is decentralized blockchain technology. Cryptocurrency uses digital ledger and cryptography to safe and secure users transactions.

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The world's first cryptocurrency coin was created in 2008 known as Bitcoin. promoted by Satoshi Nakamoto. The popularity of Bitcoin is evident from its name. That's why Bitcoin has gained a special place in cryptocurrency. Bitcoin is also known as BTC and its price is $61721. In addition, many companies and countries have created their own coins and tokens that are very useful in cryptocurrency. Some important cryptocurrencies are Bitcoin, Ethereum, Steem, Litecoin, Cardano, and Tenup Nation.

Cryptocurrency will gain prominence in the next few years. With the advent of cryptocurrency, the economy of other countries became stronger.

What is Cryptography and how does it make cryptocurrencies secure?

Cryptography

The technique in which we protect our data from unauthorized is known as cryptography. In cryptography, we protect information and communications through code. It is made to save people's data. Cryptography stands for two words ''crypt'' and ''graph'' the word crypt means secret and graphy means writing. That is, we write data that is perfectly secure.

Cryptography is a technique in which we hide our data in encryption and decryption form. In the encryption form, we write data in the form of codes which is not readable. In the decryption form of data, we write data in the form of codes which is readable.

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In computer science, cryptography means to write the most secure information in the form of codes called algorithms. Information is exchanged in ways that make it difficult to understand and keep our information safe.

Cryptography provides us with public and private keys. The public key is used to encrypt code and the private key is used to decrypt. With the help of a private key, we can protect our coins from theft.
There are some properties provided by cryptography to secure our cryptocurrencies. Some types are confidentiality, integrity, Non-repudiation, and Authentication.

• Confidentiality: No one can understand the information for which it was given.
• Authentication: The sender and receiver can confirm each other identity and origin information.

Cryptography is the best way to secure our cryptocurrencies. It contains information written in the form of code that is very difficult to break. It converts chipper text into plain text.

Explore the Steem Genesis Block and Sign in as proof of completion.

For this purpose, we type https://steemworld.org/ in our browser. After this, a page will be open.

When we go on the home page we see different types of tools in the dashboard and we click on the block explorer.

After clicking on block explorer a pop-up will appear and we click it ok.

After clicking this a page will appear with some details such as Timestamp, Block Id, Previous Id, Signing key, Witness, Witness signature, Transaction Merkle root, and Extensions.

We see a small sign-in button in the top corner and click it after clicking it a pop-up page will appear on the screen and put the information of our account.

In the last step, we can see the Bitcoin block explorer with my account profile with complete detail as proof.

Conclusion

Cryptocurrencies are digital currencies. In this lecture, I will be able to differentiate between cryptocurrency and cryptography. This is a very informative lecture for me. We all need to know about cryptocurrency. I am very grateful to Steemit who gave us the opportunity to learn about cryptocurrency and it is a great platform.

Thanks for your kindness...

By @tasmiya