Why Is the Gas Fee Model Essential for Maintaining Blockchain Immutability?

Gas fees are the transaction costs paid to network validators for executing operations on the blockchain, including deploying and interacting with smart contracts. This fee structure prevents denial-of-service attacks by making it economically prohibitive to spam the network.

By requiring a cost for every operation, it ensures that only legitimate, resource-justified transactions are processed, which maintains the integrity and immutability of the chain's state.