An internal validator is a node within a blockchain network responsible for verifying and validating transactions. These nodes help maintain the integrity and security of the blockchain by ensuring that all transactions meet predefined criteria.When a transaction occurs, internal validators check its authenticity against the network’s rules. They confirm that the sender has sufficient funds and that the transaction is properly formatted. Once verified, they add the transaction to a block, which is then integrated into the blockchain.Internal validators can operate under various consensus mechanisms, such as proof of stake or delegated proof of stake. In these systems, validators often earn rewards for their work through transaction fees or new coins.Unlike external validators, internal validators are typically part of the same blockchain ecosystem and contribute to its overall functionality. Their role is crucial in preventing double-spending fraud and maintaining trust among network participants. Effective internal validation ensures a smooth and secure operation of the entire blockchain, fostering confidence among users.