Computing Power: How Miners Verify Bitcoin Transactions
Cryptocurrency mining is the process by which computers verify transactions and add them to the blockchain. This process is used by proof-of-work networks, such as Bitcoin and Litecoin, where miners compete to solve a cryptographic puzzle. The first miner to find a valid solution earns the right to add the next block of transactions to the blockchain and receives a reward in newly minted cryptocurrency.
The mining process consists of five stages: transaction entry into the mempool, bundling transactions into a block, solving the cryptographic puzzle, broadcasting the new block, and collecting the block reward. Miners use specialized hardware, such as ASIC miners, GPU rigs, or mining software tools, to participate in this process.
The Bitcoin network is one of the most powerful computing systems ever built, with over 600 exahashes per second of combined processing power. The difficulty target for solving the cryptographic puzzle adjusts over time to keep competition intense and ensure that transactions are confirmed within a reasonable timeframe.
For those new to Bitcoin, understanding mining is essential for appreciating how the network operates without a central authority or middleman. Mining also has implications for the supply of new coins entering circulation, with block rewards directly affecting the number of new coins minted.