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We are very close to the "London Hard Fork" from which a hybrid system of Tip and Basefee for Ethereum blockchain network is expected to implement so everyone is talking about the EIP-1559 proposal and ETH 2.0 but there should be other special events like these in the crypto and the blockchain sphere. So I would like to know your personal opinions: What are the best upcoming crypto events which would make huge sense in the crypto world?

Friends, I'm confused about Blockchain technology. I asked these questions in many online forums but I've not found a great explanation yet. I found a topic when searching in CTT forum but a senior member has only answered data is stored in blockchain & it's not enough.I hope CTT forum members will make me happy by answering these technical questions. My questions are.. 1) In blockchain technology there is no central server. So where are our data asset, price, wallet address stored? 2) If data is stored in all nodes across the blockchain system, is it true our data will be lost if all nodes are damaged across the blockchain system? Note: Just a theory to assume all nodes are damaged.

Understanding blockchain technology in-depth is not an easier task, is it? Today, I am trying my best to provide all the necessary core concepts of blockchain technology. I believe it will help you to learn so many things effortlessly. So no need to wrap your head around blockchain anymore. It was invented by Satoshi Nakamoto but it is still not clear if it was a person or a group. What is blockchain technology? The core point is to be noted, blockchain is immutable records of databases followed by specific time stamps and managed by a cluster of computers from all around the world. It has no central authority so it is a Distributed Ledger Technology(DLT). Rather than copied data, blockchain allows information to be distributed with security, trust, and transparency. A block from a chain consists of a bundle of transactions protected by advanced encryption and chain is principles followed by complex codes(belong to cryptography) that bound blocks with each other. A block contains the following things Data:- Data stored in a block is determined by the type of blockchain. For example -A block from the Bitcoin blockchain network consists of information about the receiver, sender, and amounts of Bitcoin. Files in a block can be in ”.txt” format or other specific files to belong in a database. Hash:- A hash in the blockchain is a special function that converts input data into encrypted output. Hashing is carried out based on the complex mathematical operation. For your better understanding, Bitcoin addresses are from hashing, and they use SHA2-256 and RIPEMD 160. Transactions on the blockchain can be thought of as two hashes are communicating with each other for a successful transaction . Nonce:- Full form of the nonce is number only used once. A nonce value(32-bit whole number) is a unique number that is interconnected with hash. By locating nonce value on the blockchain, you can say a transaction has happened and it can not be done with conventional currency. Check the diagram, you can see the relation of nonce and hash on the blockchain. Blockchain is much more than a tool used in the financial sector. It has a wide range of applications like voter fraud prevention, improving the working efficiency of government, helping people to have financial freedom, and many more due to its features as shown in the following figure. Types of blockchain networks Security of Blockchain Security in blockchain technology is ensured by advanced encryption that is followed by cryptography and complex mathematical operations. So if you can not trust hashing or mathematics, you can not trust blockchain. Secure Hash Algorithm (SHA) 256-bit encryption is the most valuable encryption to ensure top-class security to the blockchain. Codes followed by it are unique and provides the outputs(64 alphanumeric characters long every time) when we give the different inputs so the same input can never generate the different hash. Information on the block can not be changed because it already consists of a hash from the previous block. If some malicious user tries to change something in a block, that block will be broken down and the community can immediately know something is wrong there and that something wrong can do nothing. Hash is important to protect identity in the blockchain. The hash is your private key and public key to identify you uniquely. A hash can be deciphered but it would possibly take around 1 billion years with all computing powers. So this is the reason, once you lost your wallet accessing private key or secret phrases, no one would be there to recover the lost private key because reversing work done by the algorithm is extremely complicated. Blockchain network hack Not all blockchain network can be easily hacked but some of them can be hacked, here are some possibilities:- You can also create your blockchain network if you have an excellent technical background related to computer science. Thank You!

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