LMD GHOST Definition
LMD GHOST (Latest Message Driven Greedy Heaviest Observed Sub-tree) is a consensus algorithm used predominantly in the Ethereum blockchain. The algorithm helps to secure the network and decide on the correct version of the blockchain when forks occur, that is divergences in the chain. LMD GHOST determines the main chain by weighing the votes of validators based on the most recently created block, or “latest message,” thereby ensuring a majority consensus for the acceptance of new blocks.
LMD GHOST Key Points
- LMD GHOST is a consensus algorithm used primarily in Ethereum’s blockchain.
- It’s designed to help specify the accurate version of the blockchain during forks.
- The algorithm weighs the votes of validators based on the latest created block.
- LMD GHOST ensures a majority consensus in acceptance of new blocks.
What is LMD GHOST?
Built upon the GHOST (Greedy Heaviest Observed Subtree) protocol, LMD GHOST is a modification specifically designed for Proof of Stake (PoS) systems like Ethereum 2.0. While GHOST was originally created for Proof of Work (PoW) blockchains such as Bitcoin, the shift to PoS led to the birth of LMD GHOST.
Who uses LMD GHOST?
LMD GHOST is used by validators within the Ethereum network. These validators propose and vote on blocks, maintaining the integrity and smooth functioning of the system. By utilizing LMD GHOST, they can protect the network from conflicting transactions and attacks.
Where is LMD GHOST used?
LMD GHOST is implemented in the Ethereum blockchain, particularly in its transition into Ethereum 2.0. With the move from a PoW system to a PoS system, new consensus mechanisms such as LMD GHOST are necessary for maintaining stability and security.
Why is LMD GHOST important?
LMD GHOST plays a crucial role in safeguarding security and decision making within the Ethereum network. Through this algorithm, the system is able to efficiently address and handle forks in the chain, ensuring that the most widely agreed upon version of the blockchain is followed, thereby enhancing reliability.
How does LMD GHOST work?
As its name indicates, LMD GHOST follows a ‘greedy’ protocol, always favoring the heaviest or most popular subtree in the event of a diverging blockchain. Validators place their vote based on their latest message or most recent block. Hence, the subtree with the largest number of votes, influenced by more recent blocks, becomes the accepted blockchain.
