SRM can be staked on a node. Each node must have at least 10,000,000 SRM, and must include at least one MSRM. Nodes are expected to play the following roles:
- Each node may be called upon to provide insurance for a cross-chain transaction. They will receive a portion of the fees for any transaction in which they do this. Such collateral may be subject to certain default risks.
- There will be a fund of SRM that will be distributed as staking rewards to each node.
- Each node has a leader – the one who created it. A portion of all the rewards for that node will be given to the leader.
- Nodes perform important duties to optimize the performance and throughput of the Serum ecosystem. Rewards or penalties can be paid based on their execution.