that requires nodes to lock in a certain amount of tokens to validate transactions. In return for validating transactions, they receive additional tokens as a reward. However, if the node acts maliciously, they lose its locked tokens. This process is known as staking. Proof-of-Stake (PoS) is a consensus algorithm The PoS system gives holders an equal and random opportunity to mine a new block. Before a new block is mined, a node is selected to validate the transactions within the next block. However, for a node to be selected, it must have a copy of the blockchain downloaded on its device (known as "running a full node"). Additionally, nodes need to be online at all times to validate transactions. For some people, this can prove inefficient or too cumbersome since they must be running a full node at all times. Delegated Proof-of-Stake (DPoS) can help to solve the staking issue for people who don't want to run a full node and be online 24/7. Delegated Proof-of-Stake is similar to Proof-of-Stake since users can stake their tokens to validate transactions within a block. However, DPoS uses a voting and delegation system to encourage users to contribute to network security by providing collateral. So, instead of running a full node and staking their tokens directly, network participants can elect a node to act as a validator on their behalf. Before validators can create a new block, the network must choose witnesses, sometimes referred to as delegates. Only those elected as delegates and voters can take part in this process. The precise number of delegates required to create a block varies with every project, but anything between is typically selected whenever a new block is established. When the block is created, and the data is validated, the delegate receives their reward (additional tokens). 20 and 100 delegates XDPoS and its latest upgrade Digital Contract (XDC) Network is a platform that uses its own form of DPoS, known as XDPoS. They recently revealed the newest update on XDPoS 2.0, now known as the XDC 2.0, its epoch-making consensus protocol upgrade. After a one-year-long incubation and testing, XDPoS 2.0, the advanced version of the XDC's consensus engine, is now embedded on the dev-net and is open for evaluation. XinFin Dr. Fisher Yu, Leader of the XDC Protocol Team, said: "XDC 2.0 is the next-generation consensus engine for the XDC Network. This upgrade will make XDC one of the world's most secure and efficient blockchains. Our team has been building and testing the new consensus engine for 12 months. We are happy to share with you that the engine has been built and fully rested on the dev-net." XDPoS 2.0 is the most pivotal upgrade for XDC Network since its launch in 2019. It aims to confer the utmost security and efficiency to the blockchain. Earlier in Q3 2021, the XDC team published a outlining the entire specifications of XDPoS 2.0. Henceforth, the upgrade required one year of beta testing to reach the end launch date. Fisher Yu the distinctive integrations this upgrade is syncing into the network. detailed paper highlighted Advanced Byzantine Fault Tolerance security with a forensics monitoring system, enhanced block finalization time of only three blocks, and sonic transaction speed is the array of sophisticated features integrated into the XDC platform. Principally, the deployment of BFT and the forensics monitoring system detect and eliminate malicious attackers from the network. In the last update, Andromeda, in December 2021, XDC's novel consensus engine – XDPoS, was enhanced with auxiliary upgrades. In addition, the network's EVM was upgraded to enable code deployment from different EVM chains. Once Andromeda went live on the Apothem testnet, the beta of forensic monitoring was integrated as the new functionality. Once this upgraded consensus engine goes live, XDC Network's automated judicial system will be activated. Subsequently, any malignant network activity on the blockchain would be immediately eliminated. Fisher Yu added that the newest consensus engine would go live on the Apothem testnet after completing the dev-net evaluation. The team ensures to facilitate this upgrade seamlessly without causing any hindrance to the existing network operations and infrastructure. The Ethereum scaling solution, XDC Network, is moving forward into the blockchain arena to boost decentralization, security, and efficiency. Firstly, XDC Foundation introduced XDC Network Improvement Proposals ( ) to its community this year. XIPs It mimics the functionality of EIPs as in Ethereum Network. This initiative aims to level up the standards of decentralization in the network. Favorably, XDC 2.0, also XDPoS 2.0, is expected to launch the epoch of the fourth generation of blockchains – "Blockchain 4.0." How DPoS Works In the Delegated Proof-of-Stake system, the more tokens a node has staked, the more influence they have over the voting process. This is because the number of tokens held determines voting power. Delegates can be removed from the DPoS process if they act maliciously or in an untrustworthy manner. Reputation also plays a part in the DPoS system. A node with a trustworthy reputation is more likely to be selected as a delegate. Nodes that are selected to become delegates are also referred to as "witnesses." For nodes to vote for delegates in a delegated proof of stake system, nodes must deposit their tokens into a staking pool and vote for their chosen delegate. Once selected, delegates must agree on which transactions to approve and which ones to cancel. Next, full nodes on the network validate the blocks. Validation of new blocks occurs only if the network has reached a consensus on the validity of the transactions. The block will not be validated if the delegate does not confirm the transactions in time. Only once the transactions have been confirmed promptly can the block be verified, and the delegate receives their block reward. Conclusion Delegated Proof-of-Stake is another iteration of the Proof-of-Stake system that uses a voting and delegation system to secure the network. Instead of running a full node, participants in the network can elect other nodes to validate transactions by depositing their tokens into a voting pool.

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