In many blockchain networks, transaction fees play a major role in motivating block producers to include transactions in their blocks. However, Midnight operates differently because its transaction resource, DUST, is not transferable and cannot function as a store of value. This creates a unique challenge: block producers might be tempted to produce empty blocks instead of filling them with transactions.
To solve this, Midnight introduces a smart reward structure designed to encourage efficient block production and maximize network utilization.
Splitting the Block Reward
Midnight block reward system divides the base reward into two parts:
Fixed Subsidy
Variable Reward
This mechanism ensures that block producers are rewarded fairly while still encouraging them to include as many transactions as possible.
Fixed Subsidy: Guaranteed Incentive
The fixed subsidy acts as a guaranteed baseline reward for block producers. Regardless of whether a block contains many transactions or very few, the block producer will always receive this portion of the reward.
This ensures that block producers remain incentivized to participate in the network even during periods of low activity.
Variable Reward: Incentive for Full Blocks
The second portion of the reward is the variable component, which depends on how full the block is.
If a block contains many transactions and utilizes more block space, the block producer receives a larger share of this variable reward. However, if the block is not fully utilized, the remaining portion of the reward is directed to the on-chain Treasury.
This design encourages block producers to maximize block usage by including as many transactions as possible.
Understanding the Subsidy Rate
The proportion between the fixed subsidy and the variable reward is controlled by a system parameter known as the subsidy rate.
For example, if the subsidy rate is 80%, it means that:
80% of the base reward is guaranteed to the block producer
The remaining 20% becomes the variable reward that depends on block utilization
This flexible design allows the protocol to balance network participation with efficiency.
Early Network Strategy
At the launch of the Midnight network, the subsidy rate is set very high—around 95%. This ensures that early block producers have strong incentives to participate even when network activity is still developing.
As the network grows and more transactions occur, the subsidy rate can gradually be adjusted through governance. Over time, it may move closer to 50%, increasing the incentive for block producers to create fuller blocks and improving overall network efficiency.
Why This Design Matters
Midnight’s block reward mechanism is carefully designed to maintain both network security and efficiency.
By combining guaranteed rewards with performance-based incentives, the system ensures that:
Block producers remain active even in the early stages
Transactions are processed efficiently
Network resources are utilized effectively
The ecosystem treasury continues to receive funding
This balanced incentive model plays a crucial role in maintaining the long-term sustainability and performance of the @MidnightNetwork .