System-level consensus layer refers to the protocol that ensures agreement among distributed nodes on the state of a blockchain. It plays a critical role in maintaining the integrity and security of the network by validating transactions and updating the shared ledger.This layer establishes rules for how nodes communicate and reach a consensus, preventing issues like double spending and ensuring that all participants have a consistent view of the blockchain. Common consensus mechanisms include Proof of Work, Proof of Stake, and Delegated Proof of Stake.By defining how nodes achieve consensus, the system-level consensus layer helps to secure the network against attacks and enhances efficiency. It determines factors such as block creation time, transaction throughput, and overall network governance. The effectiveness of this layer is crucial for the scalability and resilience of the entire blockchain ecosystem, influencing how well the network can adapt to changes and maintain trust among its users.