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22nd World Blockchain Summit Begins in Dubai

World Blockchain Summit in Dubai is taking place on Oct. 17 and 18, 2022 at Atlantis, The Palm. It is one of the most elite gatherings of the global crypto and blockchain ecosystem. The 22nd global edition of the World Blockchain Summit will bring together some of the world’s leading crypto influencers, policymakers, key government delegates, media, family offices, HNIs and other curated investors, among others, to foster the crypto and blockchain community across the globe.

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What Is Blockchain Technology:

Blockchain technology is a technology that leads to a chain of blocks, containing digital information stored in a public database. It is a distributed database existing on multiple computers at the same time, which constantly grows as new sets of recordings or blocks are added to it.

How Does Blockchain Work:

  • Blockchain consists of three important concepts: blocks, nodes and miners.

What Are Blocks:

  • Every chain consists of multiple blocks and each block has three basic elements:
  • The data in the block. A 32-bit whole number called a nonce. The nonce is randomly generated when a block is created, which then generates a block header hash.
  • The hash is a 256-bit number wedded to the nonce. It must start with a huge number of zeroes (i.e., be extremely small).
  • When the first block of a chain is created, a nonce generates the cryptographic hash. The data in the block is considered signed and forever tied to the nonce and hash unless it is mined.

What Are Miners:

  • Miners create new blocks on the chain through a process called mining.
  • In a blockchain every block has its own unique nonce and hash, but also references the hash of the previous block in the chain, so mining a block isn’t easy, especially on large chains.
  • Miners use special software to solve the incredibly complex math problem of finding a nonce that generates an accepted hash. Because the nonce is only 32 bits and the hash is 256, there are roughly four billion possible nonce-hash combinations that must be mined before the right one is found. When that happens miners are said to have found the “golden nonce” and their block is added to the chain.
  • Making a change to any block earlier in the chain requires re-mining not just the block with the change, but all of the blocks that come after. This is why it’s extremely difficult to manipulate blockchain technology. Think of it as “safety in math” since finding golden nonces requires an enormous amount of time and computing power.
  • When a block is successfully mined, the change is accepted by all of the nodes on the network and the miner is rewarded financially.

What Are Nodes:

  • One of the most important concepts in blockchain technology is decentralization. No one computer or organization can own the chain. Instead, it is a distributed ledger via the nodes connected to the chain. Nodes can be any kind of electronic device that maintains copies of the blockchain and keeps the network functioning.
  • Every node has its own copy of the blockchain and the network must algorithmically approve any newly mined block for the chain to be updated, trusted and verified. Since blockchains are transparent, every action in the ledger can be easily checked and viewed. Each participant is given a unique alphanumeric identification number that shows their transactions.

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