Mining rewards are the incentives miners receive for successfully adding a new block of transactions to a proof-of-work blockchain. Often called a block reward, mining rewards are what motivate miners to spend computing power and electricity to secure the network.
What makes up a mining reward
In many networks, mining rewards are a combination of two elements. The first is the block subsidy, which is newly minted cryptocurrency created by the protocol and paid to the miner (or mining pool) that proposes a valid block. The second is transaction fees, which are paid by users to have their transactions included in that block. In practice, a miner’s payout typically reflects both components, although the balance between them can shift depending on network rules and how congested block space is.
On Bitcoin, for example, miners compete to find a valid proof of work. The miner who finds it first earns the block subsidy plus the fees from the transactions they included. On Ethereum’s current proof-of-stake design, there is no mining reward in the same sense, which highlights that “mining rewards” are specific to mining-based security models.
How mining rewards influence security and network behavior
Mining rewards directly affect the economics of network security. Higher rewards can attract more miners, increasing total hash rate and making attacks more expensive. Lower rewards can reduce miner participation, potentially lowering security if not balanced by fee income.
Most proof-of-work chains also have a monetary schedule that changes the subsidy over time, such as periodic “halving” events on Bitcoin. As the subsidy trends downward, transaction fees are expected to play a larger role in sustaining miner incentives.
Mining rewards matter because they align miner profits with honest validation, helping keep transactions reliable, blocks timely, and the blockchain resistant to censorship and double-spending.