Definition ∞ Validator nodes are specialized computers that participate in a proof-of-stake blockchain network by verifying transactions and creating new blocks. These nodes are responsible for maintaining the integrity and security of the distributed ledger by proposing and confirming blocks according to the network’s consensus rules. To become a validator, participants typically must stake a certain amount of the network’s native cryptocurrency as collateral, which can be subject to slashing if they act maliciously or fail to perform their duties. They are fundamental to the operational security of proof-of-stake systems.
Context ∞ News reports often discuss validator nodes in the context of blockchain network upgrades, decentralization efforts, and discussions about network security and performance. The distribution and number of active validator nodes are critical indicators of a network’s resilience and resistance to censorship. The ongoing efforts to lower the barrier to entry for running validator nodes aim to enhance network decentralization.
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