Weak Subjectivity
| Weak Subjectivity - the need for specific nodes to rely on other nodes when identifying the current state of a Proof-of-Stake blockchain. In a Proof-of-Stake blockchain, specific nodes are tasked with validating blocks and maintaining the blockchain. These nodes, known as validators, must come to a consensus in order to add new blocks to the chain. This consensus is reached through a process of staking, where validators put up a certain amount of the cryptocurrency as a deposit. The more that is staked, the more weight a validator's vote carries. The problem with this system is that it is reliant on validators being online and active in order to reach consensus. If too many validators are offline or inactive, the blockchain can grind to a halt. This is known as the Weak Subjectivity Problem. There are a few ways to solve the Weak Subjectivity Problem. One is to have a minimum number of validators required in order to reach consensus. This number can be set by the developers of the blockchain or voted on by the community. Another solution is to have a backup group of validators that can take over if the primary group is unable to reach consensus. The Weak Subjectivity Problem is a major issue that needs to be addressed in order to make Proof-of-Stake blockchains more secure and reliable. Without a solution, Proof-of-Stake blockchains are at risk of being taken over by malicious actors or becoming bogged down by inactivity. |
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