Block Reward
Block reward is the amount of cryptocurrency given to a miner for successfully validating transactions and adding a new block. It consists of newly created coins and transaction fees included in the block. In Bitcoin, the block reward is reduced over time through a process called halving.
Block Reward Explained in Simple Terms
Block reward is the payment miners receive for doing the work that keeps the blockchain running. When miners process transactions and create a new block, the network rewards them with Bitcoin.
This reward has two parts. The first part is newly generated coins - this is how new Bitcoin enters circulation. The second part comes from transaction fees paid by users who want their transactions processed.
At the beginning of Bitcoin, the reward was much higher. Over time, it decreases automatically through an event called halving, which happens roughly every four years. Each halving cuts the reward in half, reducing the rate at which new Bitcoin is created.
This system helps control supply and ensures scarcity. It also encourages miners to stay active and secure the network, since they earn rewards for their work.
For miners, block reward is the main source of income, making it a key factor in determining whether mining is profitable.
How Block Reward Works
Block reward is distributed through the mining process.
Miners compete to solve a cryptographic puzzle using Proof of Work. The first miner to find a valid solution gets the right to add a new block to the blockchain. Once the block is accepted by the network, the miner receives the reward.
The reward includes:
Newly minted Bitcoin (subsidy)
Transaction fees from all transactions in the block
Bitcoin’s block reward follows a fixed schedule:
It started at 50 BTC per block
It halves every 210,000 blocks
It will eventually reach zero after all 21 million bitcoins are mined
As the reward decreases, transaction fees are expected to become a more important source of miner income.
Mining difficulty and hashrate affect how often miners earn rewards, while electricity costs and hardware efficiency determine overall profitability.
Example of Block Reward in Practice
Imagine a mining pool using ASIC machines to mine Bitcoin. The pool successfully solves a block and adds it to the blockchain.
At the current stage of the network, the block reward might be 3.125 BTC (after multiple halvings), plus transaction fees. If the total reward is 3.5 BTC including fees, this amount is distributed among pool participants.
Each miner receives a share based on their hashrate contribution. For example, a miner providing 2% of the pool’s computing power would earn approximately 2% of the total reward.