Bitcoin Mining Glossary

Application-Specific Integrated Circuit. A specialized computer chip designed exclusively for Bitcoin mining. ASICs are vastly more efficient than general-purpose CPUs or GPUs for mining, offering higher hashrates with lower power consumption.

The total reward a miner receives for successfully mining a block, consisting of the block subsidy (newly minted bitcoin) plus all transaction fees from included transactions.

The amount of newly created bitcoin awarded to miners for each block. This subsidy halves approximately every four years and is the primary component of miner revenue.

The time interval between consecutive blocks being added to the blockchain. Bitcoin targets an average block time of 10 minutes, maintained through difficulty adjustments.

The Bitcoin price at which mining revenue exactly equals operational costs. Below break-even, mining operates at a loss; above it, mining is profitable.

The total expense incurred to mine one Bitcoin, including electricity costs, pool fees, and potentially hosting or infrastructure costs. A key metric for assessing mining profitability.

The automatic recalibration of mining difficulty that occurs every 2,016 blocks. If blocks are being found faster than 10 minutes on average, difficulty increases; if slower, it decreases.

The price paid for electrical power used in mining operations, typically measured in cents or dollars per kilowatt-hour ($/kWh). Often the largest variable cost in mining.

A period of 2,016 blocks between difficulty adjustments. Each epoch takes approximately two weeks if blocks are found at the target 10-minute average.

The price per unit of block space for a transaction, typically measured in satoshis per virtual byte (sat/vB). Higher fee rates prioritize transaction confirmation.

Full Pay Per Share. Similar to PPS but also includes an estimated share of transaction fees in the payout calculation, providing miners with both block subsidy and fee revenue.

A programmed event that occurs every 210,000 blocks (approximately every four years), reducing the block reward by 50%. The halving controls Bitcoin's inflation and supply schedule.

Return on Investment for mining hardware. The time or conditions required to recover the initial capital expenditure on mining equipment through mining profits.

The output of a cryptographic hash function. In Bitcoin mining, miners repeatedly compute SHA-256 hashes trying to find one below the target difficulty value.

The daily revenue earned per unit of hashrate, typically expressed as USD per TH/s per day ($/TH/day) or per PH/s per day. Hashprice reflects the economic value of mining capacity.

The total computational power being used to mine and process transactions on the Bitcoin network. Measured in hashes per second (H/s), with common units being TH/s (terahashes), PH/s (petahashes), and EH/s (exahashes).

Joules per Terahash. A measure of mining hardware efficiency indicating how much energy (in joules) is consumed to produce one terahash of computational power. Lower J/TH values indicate more efficient hardware.

The memory pool where unconfirmed transactions wait to be included in a block. Miners select transactions from the mempool, typically prioritizing those with higher fee rates.

A collective of miners who combine their computational resources to increase their chances of finding blocks. Rewards are distributed among participants based on contributed hashrate.

A computer system configured specifically for cryptocurrency mining. In Bitcoin mining, this typically refers to an ASIC device with power supply, cooling, and network connectivity.

A measure of how hard it is to find a valid block hash. Bitcoin automatically adjusts difficulty every 2,016 blocks (approximately two weeks) to maintain an average block time of 10 minutes.

A number that miners increment to change the block header hash. By trying different nonces, miners search for a hash that meets the difficulty requirement.

A percentage of mining rewards retained by the pool operator for providing pooling services. Typically ranges from 0% to 3% depending on the pool and payout method.

The ratio of expected blocks to actual blocks found by a pool over a period. Luck above 100% means fewer shares were needed; below 100% means more shares were required.

The amount of electrical energy used by mining hardware, typically measured in watts (W). Power consumption directly impacts operational costs and profitability calculations.

Pay Per Last N Shares. A pool payout method that distributes block rewards based on shares submitted in the last N shares window. Payouts vary based on pool luck but typically have lower fees.

Pay Per Share. A pool payout method that pays miners a fixed amount for each valid share submitted, regardless of whether the pool finds a block. Provides consistent payouts but typically charges higher fees.

The net financial return from mining operations after accounting for all costs including electricity, pool fees, hardware depreciation, and other operational expenses.

The consensus mechanism used by Bitcoin requiring miners to expend computational effort to find valid block hashes. This work secures the network and validates transactions.

The smallest unit of Bitcoin, equal to 0.00000001 BTC. Named after Bitcoin's pseudonymous creator, Satoshi Nakamoto. Transaction fees and small amounts are often expressed in satoshis.

Secure Hash Algorithm 256-bit. The cryptographic hash function used in Bitcoin mining. Miners compute SHA-256 hashes to find valid block solutions.

A valid proof of work submission to a mining pool that demonstrates a miner's contribution. While shares don't meet the full network difficulty, they prove work is being done.

Payments made by users to have their transactions included in blocks. Transaction fees supplement the block subsidy and become increasingly important as halving events reduce the subsidy.