Every Bitcoin mining term you need to know, defined clearly with real-world context for home miners. This glossary covers 150+ terms from ASIC chips to zero-confirmation transactions, organized alphabetically with jump navigation. Whether you are setting up your first Bitaxe or optimizing a multi-unit Bitcoin mining cluster, this is your definitive reference.
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A
51% Attack
A theoretical security threat where a single entity or coordinated group gains control of more than 50% of the Bitcoin network’s total hashrate. With majority hashrate, the attacker could double-spend coins, prevent transactions from confirming, or reverse recent transactions. Bitcoin’s massive global hashrate (exceeding 800 EH/s in 2026) makes a 51% attack extraordinarily expensive and practically infeasible. Decentralized mining through open-source hardware like Bitaxe helps distribute hashrate globally, making such attacks even harder to execute. Learn more about why decentralization matters: Bitcoin Mining Decentralization.
Accepted Share
A share submitted by a miner to a mining pool that meets the required difficulty and is confirmed as valid. Accepted shares determine a miner’s payout, proportional to their contribution to the pool’s total hashrate. Low-latency network connections help maximize accepted shares. Learn more: What Are Shares in Bitcoin Mining?
Antminer
The brand name for Bitmain’s line of ASIC mining hardware. Antminer models such as the S19, S21, and T21 are among the most widely deployed industrial Bitcoin miners globally. Bitmain also manufactures the BM1370 ASIC chip used in open-source home miners like the Bitaxe Gamma 602 and NerdQaxe++. While Antminers are designed for large-scale operations, open-source alternatives bring Bitcoin mining to the home.
AntPool
One of the largest Bitcoin mining pools globally, operated by Bitmain Technologies. AntPool commands approximately 17-19% of the global Bitcoin network hashrate in 2026 and supports FPPS, PPS, and PPLNS payout methods. The pool is tightly integrated with Bitmain’s Antminer hardware ecosystem and operates servers across North America, Europe, and Asia. While AntPool offers scale and reliability, its centralized structure contrasts with decentralized alternatives preferred by home miners. Learn more about pool options: Understanding Mining Pools.
ASIC (Application-Specific Integrated Circuit)
A specialized chip engineered exclusively for Bitcoin’s SHA-256 hashing algorithm. ASICs deliver vastly superior hashrate and energy efficiency compared to CPUs, GPUs, or FPGAs. Modern Bitcoin ASICs like the BM1370 (used in the Bitaxe Gamma 602) achieve approximately 15 J/TH efficiency. ASICs are the only viable hardware for Bitcoin mining in 2026. The evolution from CPUs to ASICs is covered in our guide: The Evolution of Bitcoin Mining: From CPUs to ASICs.
ASIC Boost
An optimization technique that exploits the structure of SHA-256 block header hashing to reduce the number of computations needed per hash attempt. ASIC Boost can be implemented overtly (in the block header) or covertly (via the Merkle tree). Most modern ASIC firmware supports ASIC Boost by default, improving energy efficiency without additional hardware cost.
ASIC Frequency
The operating clock speed of an ASIC chip, measured in megahertz (MHz). Higher frequency increases hashrate but also raises power consumption and heat output. Miners adjust frequency through firmware settings to balance performance, cooling, and energy costs. Overclocking increases frequency beyond defaults, while underclocking reduces it for better efficiency. See our practical guide: How to Overclock Bitaxe Gamma.
ASIC-Resistant
A design goal for some cryptocurrency mining algorithms that attempts to minimize the performance advantage of ASIC hardware over general-purpose hardware like GPUs and CPUs. Algorithms like RandomX (used by Monero) and KawPoW (used by Ravencoin) use memory-hard or frequently changing designs to discourage ASIC development. Bitcoin’s SHA-256 algorithm is not ASIC-resistant, which is why dedicated ASIC chips dominate Bitcoin mining.
ASIC Temperature
The heat level of an ASIC chip during operation. Most ASIC chips should be kept below 75-80 degrees Celsius to prevent thermal throttling or hardware damage. Effective cooling solutions extend ASIC lifespan and allow higher stable clock speeds.
Autotuning
A firmware feature that automatically adjusts ASIC frequency and voltage settings to find the optimal balance between hashrate, power consumption, and temperature. Autotuning tests various configurations and selects the best-performing profile for the specific chip. Some third-party firmware like Braiins OS offers advanced autotuning for industrial miners.
Average Hashrate
A smoothed measurement of a miner’s computational output over a period of time, expressed in hashes per second (H/s, KH/s, MH/s, GH/s, TH/s). Average hashrate is more useful than instantaneous hashrate for estimating mining performance and probability of finding a block, as it accounts for natural fluctuations in hashing speed.
AxeOS
The open-source firmware that powers all Bitaxe miners. AxeOS runs on the ESP32-S3 microcontroller and provides a browser-based dashboard accessible over your local Wi-Fi network. It displays real-time hashrate, temperature, share counts, best difficulty, and pool configuration. Firmware updates can be applied through the AxeOS web interface. Learn how: How to Update Bitaxe Firmware.
B
Best Difficulty
The highest difficulty share a miner has ever submitted. This metric reflects the miner’s peak computational achievement and serves as an indicator of hardware capability. For solo miners, tracking best difficulty helps gauge how close the hardware has come to solving a block. A Solo Satoshi customer’s Bitaxe Gamma 602 cluster achieved a best difficulty of 221.39 T before finding block #924,569.
Binance Pool
A Bitcoin mining pool operated by the Binance cryptocurrency exchange. Binance Pool offers FPPS payouts and integrates directly with Binance exchange accounts for seamless BTC management. While convenient for miners already using Binance, it introduces custodial tradeoffs since mined Bitcoin is held within the exchange ecosystem. Binance Pool holds a notable share of the global hashrate in 2026.
Bitaxe
An open-source, compact ASIC Bitcoin miner designed for solo mining at home. Created by hardware engineer Skot, all Bitaxe designs are published at bitaxe.org. Bitaxe miners run AxeOS firmware, connect over 2.4 GHz Wi-Fi, and consume roughly $2/month in electricity at $0.16/kWh. Current models include the Gamma 602 (1.2 TH/s), Duo 650 (1.63 TH/s), GT 801 (2.15 TH/s), Supra (650 GH/s), and Touch (1.0 TH/s with 3.5-inch touchscreen). Learn more: What is Bitaxe?
Bitcoin (BTC)
A decentralized digital currency that operates on a peer-to-peer network without intermediaries. Bitcoin uses proof-of-work mining to validate transactions and secure the blockchain. Its total supply is capped at 21 million coins, with new coins issued through block rewards. Bitcoin is the only cryptocurrency that Bitaxe and other open-source home miners are designed to mine. Learn the fundamentals: What is Bitcoin Mining?
Bitcoin Core
The reference software implementation for running a full Bitcoin node. Bitcoin Core validates all transactions and blocks independently, downloads and stores the entire blockchain, and allows miners to generate their own block templates for solo mining without relying on a third-party pool.
Bitcoin Improvement Proposal (BIP)
A formal document proposing changes, improvements, or new features to the Bitcoin protocol. BIPs go through community review and are implemented through soft forks or hard forks. Notable BIPs include BIP 141 (SegWit), BIP 340-342 (Taproot/Schnorr signatures), and BIP 34 (block height in coinbase). Miners signal support for BIPs through version bits in block headers.
Bitcoin Knots
An alternative full node software implementation for Bitcoin, maintained by developer Luke Dashjr. Bitcoin Knots is based on Bitcoin Core but includes additional features, stricter default policy settings, and patches that have not yet been merged into Core. Some miners and node operators prefer Knots for its more conservative transaction filtering policies, including stricter limits on non-financial data stored in the blockchain. Like Bitcoin Core, Knots can be used to validate transactions, store the blockchain, and generate block templates for solo mining. Ocean Pool notably uses Bitcoin Knots as its reference implementation.
Bitcoin Mining
The process of using computational power to solve SHA-256 cryptographic puzzles, validate transactions, secure the Bitcoin blockchain, and earn rewards in the form of new bitcoins and transaction fees. Mining can be done solo or through a mining pool. In 2026, open-source home miners have made Bitcoin mining accessible to individuals worldwide. Solo Satoshi customers have earned over $342,000 in verified block rewards using home mining hardware. Learn how to get started: How to Start Bitcoin Mining in 2026.
Bitcoin Wallet
Software or hardware that stores the private keys needed to send, receive, and manage Bitcoin. Wallets come in several forms: hot wallets (connected to the internet), cold wallets (offline), hardware wallets (dedicated physical devices like the Blockstream Jade), and paper wallets. Every miner needs a wallet address to receive mining rewards. See our guide: Choosing the Right Wallet.
Block
A batch of verified Bitcoin transactions bundled together and added to the blockchain. Each block contains a block header, a list of transactions, and a reference to the previous block’s hash, forming an unbreakable chain. A new block is added approximately every 10 minutes. What Exactly is My Bitcoin Miner Doing?
Block Explorer
A web-based tool that allows anyone to search and view Bitcoin blockchain data, including transaction details, block heights, addresses, and mining pool information. Popular block explorers include mempool.space and blockstream.info. Miners use block explorers to verify block finds and confirm on-chain transactions.
Block Header
An 80-byte data structure containing metadata for a Bitcoin block. The block header includes the version number, previous block hash, Merkle root, timestamp, difficulty target (nBits), and nonce. Miners repeatedly hash the block header with different nonce values to find a valid hash below the target difficulty. The block header is the only data that miners actually hash during the mining process.
Block Height
The sequential number of a block in the Bitcoin blockchain, counted from the genesis block (block 0). Block height tracks the chain’s length and determines events like halvings, which occur every 210,000 blocks. As of early 2026, Bitcoin’s block height is above 920,000. Track documented block wins by height.
Block Reward
The total payment a miner receives for successfully mining a block. The block reward consists of two parts: the block subsidy (newly created bitcoins) and the transaction fees from all transactions included in that block. After the April 2024 halving, the block subsidy is 3.125 BTC per block. Solo miners who find a block keep the entire reward. A Solo Satoshi customer earned approximately 3.15 BTC (~$342,000) for finding block #920,440.
Block Size
The amount of data a Bitcoin block contains, originally limited to 1 megabyte (MB). Since the SegWit upgrade in 2017, Bitcoin uses block weight instead of block size as the primary constraint. The effective block size limit is now approximately 1-4 MB depending on the mix of transaction types. Larger blocks can hold more transactions, increasing total fee revenue for the miner who finds the block.
Block Subsidy
The portion of the block reward consisting of newly minted bitcoins. The subsidy started at 50 BTC per block in 2009 and halves every 210,000 blocks (approximately every four years). The current subsidy is 3.125 BTC, set during the April 2024 halving. The next halving is expected around 2028. As subsidies decrease, transaction fees become an increasingly important part of miner revenue.
Block Template
A data structure generated by a Bitcoin node or pool that provides miners with the information needed to construct a valid block. Block templates include the previous block hash, candidate transactions, target difficulty, and coinbase transaction data. Miners running their own nodes can build custom block templates, giving them control over which transactions to include. Protocols like DATUM and Stratum V2 allow even pool miners to build their own templates. Learn more: DATUM and Stratum V2.
Block Time
The average interval between mined blocks on a blockchain. Bitcoin targets a 10-minute block time, maintained through automatic difficulty adjustments every 2,016 blocks. Actual block times vary from seconds to over an hour depending on mining luck and hashrate fluctuations.
Block Weight
The measurement system introduced by SegWit in 2017 that replaced the simple block size limit. Block weight is measured in weight units (wu), with a maximum of 4 million weight units per block. Non-witness transaction data counts as 4 weight units per byte, while witness (signature) data counts as 1 weight unit per byte. This gives SegWit transactions a “discount” on block space. One virtual byte (vByte) equals 4 weight units, so the maximum block size in vBytes is 1 million (approximately 1-4 MB in raw data depending on transaction types).
Blockchain
A distributed, immutable digital ledger that records every Bitcoin transaction chronologically in linked blocks. Each block references the previous block’s hash, making it computationally infeasible to alter past records. The blockchain is maintained by thousands of nodes worldwide, and miners secure it through proof-of-work.
BM1370
A Bitcoin mining ASIC chip manufactured by Bitmain, used in the Bitaxe Gamma 602, Bitaxe Duo 650, Bitaxe GT 801, and NerdQaxe++. The BM1370 delivers approximately 15 J/TH efficiency and is the most widely used chip in open-source home mining hardware in 2026.
Braiins Pool (formerly Slush Pool)
The first Bitcoin mining pool ever created, founded in 2010 by Marek Palatinus. Originally known as Slush Pool, it was rebranded to Braiins Pool. The pool uses PPLNS payouts with 0% stated pool fees and is closely tied to the Braiins development team, which also created the Stratum V2 protocol and Braiins OS firmware. Braiins Pool attracts technically proficient miners who prioritize decentralization and transparency. Participants have collectively mined over 1.25 million BTC since 2010. Learn more about pools: Understanding Mining Pools.
Buck Converter
A DC-to-DC power converter that steps down voltage to the level required by ASIC chips. Buck converters improve energy efficiency by reducing voltage with minimal power loss. In Bitaxe miners, the buck converter regulates the 5V DC input down to the ASIC’s operating voltage.
C
Candidate Block
A block that a miner has assembled from mempool transactions and is actively trying to mine by finding a valid proof-of-work hash. The candidate block includes a coinbase transaction paying the miner, selected transactions ordered by fee priority, and a block header with the current difficulty target. Once a valid hash is found, the candidate block becomes a confirmed block and is broadcast to the network.
CKPool
A solo mining pool operated by Con Kolivas that enables individual miners to submit shares while attempting to find a full block independently. CKPool is one of the most popular destinations for Bitaxe and NerdQaxe++ solo miners. A Solo Satoshi customer’s Bitaxe cluster found block #924,569 on CKPool, earning 3.08349744 BTC.
Cloud Mining
A service where users rent remote mining hardware or hashrate to earn Bitcoin without owning or managing physical equipment. Cloud mining carries significant risks including scams, low returns, opaque hashrate allocation, and hidden fees. Most experienced miners prefer owning their own hardware for control, transparency, and self-sovereignty. See: Is Bitcoin Mining Still Profitable?
Coinbase (Field)
A special data field within the coinbase transaction that allows miners to include up to 100 bytes of arbitrary data. This field is distinct from the coinbase transaction itself. The most famous use of the coinbase field is Satoshi Nakamoto’s embedded message in the genesis block: “The Times 03/Jan/2009 Chancellor on brink of second bailout for banks.” Miners commonly use this field for their pool identification tag, extraNonce values, and occasionally custom messages.
Coinbase Maturity (Reward Maturity)
A Bitcoin protocol rule requiring that newly mined coins from a coinbase transaction cannot be spent until 100 additional blocks have been added to the blockchain after the block containing them. This 100-block waiting period (approximately 16.5 hours) protects against chain reorganizations that could invalidate the mined block. Solo miners who find a block must wait for 100 confirmations before their reward becomes spendable.
Coinbase Transaction
The first transaction in every Bitcoin block, created by the miner who solves the block. The coinbase transaction has no inputs and generates new bitcoins equal to the block subsidy plus collected transaction fees. This is the mechanism through which all new Bitcoin enters circulation. Miners can split the coinbase output across multiple addresses and include custom data in the coinbase field.
Cold Wallet
An offline Bitcoin storage method that keeps private keys completely disconnected from the internet. Cold wallets include hardware wallets like the Blockstream Jade and Jade Plus, air-gapped computers, and paper wallets. Cold storage is the most secure way to protect mining rewards from cyber threats. Learn more: Choosing the Right Wallet.
Confirmation
The inclusion of a Bitcoin transaction in a mined block. Each subsequent block added after a transaction’s block adds another confirmation, increasing the transaction’s security. Most exchanges require 3-6 confirmations before crediting a deposit. Miners receiving block rewards must wait for 100 confirmations (coinbase maturity) before the coins become spendable.
Cooling System
Hardware or methods used to manage heat generated by ASIC chips during mining. Common cooling approaches include passive heatsinks, active fans, and immersion cooling (submerging hardware in non-conductive liquid). Proper cooling prevents thermal throttling, extends hardware lifespan, and enables higher overclocking. See: Choosing the Best Cooling Solution for Your Bitaxe.
Core Clock / Memory Clock
Tunable settings that control the operating speed of an ASIC or GPU mining chip. Core clock affects the calculation speed of the hashing algorithm. Adjusting these settings is the primary method of overclocking (increasing speed for more hashrate) or underclocking (decreasing speed for better efficiency). Proper tuning balances hashrate, power draw, and temperatures.
CPU Mining
Mining Bitcoin using a computer’s central processing unit. CPU mining was viable from 2009 to approximately 2010, when Satoshi Nakamoto and early adopters mined Bitcoin on standard computers. CPUs are completely obsolete for Bitcoin mining in 2026, as ASICs are millions of times more efficient. Read the full history: The Evolution of Bitcoin Mining: From CPUs to ASICs.
Curtailment
The practice of reducing or shutting down mining operations during periods of high electricity demand or prices. Industrial miners use curtailment to sell power back to the grid during peak demand events, turning their mining facility into a flexible energy resource. Home miners may schedule operations around time-of-use electricity rates to reduce costs.
D
DATUM
A decentralized mining protocol that allows individual miners to construct their own block templates while still participating in a pool. DATUM shifts block construction authority from pools to miners, supporting Bitcoin’s decentralization by preventing pools from unilaterally deciding which transactions to include in blocks. Learn more: DATUM and Stratum V2: Decentralization.
Decentralization
The distribution of power, control, and decision-making across a network rather than concentrating it in a single entity. In Bitcoin mining, decentralization means no single pool, company, or government controls transaction validation. Solo mining and open-source hardware like Bitaxe strengthen decentralization by distributing hashrate globally across 70+ countries. See: Bitcoin Mining Decentralization.
Difficulty
A numerical value that determines how hard it is to find a valid block hash. Bitcoin’s difficulty adjusts automatically every 2,016 blocks (approximately two weeks) to maintain a 10-minute average block time. When more miners join the network and total hashrate increases, difficulty rises. When miners leave, difficulty decreases. As of early 2026, Bitcoin’s mining difficulty exceeds 148 trillion. Higher difficulty means each individual miner has a lower probability of finding a block. For a deeper explanation, see: Understanding Bitcoin’s Network Difficulty.
Difficulty Adjustment
The automatic recalculation of Bitcoin’s mining difficulty every 2,016 blocks. The adjustment compares the actual time taken to mine those blocks against the target time of 20,160 minutes (2,016 blocks at 10 minutes each). If blocks were found too quickly, difficulty increases. If too slowly, it decreases. This self-regulating mechanism ensures consistent block production regardless of total network hashrate. The maximum adjustment per period is a factor of 4 (either up or down).
Difficulty Ribbon
An analytical tool created by Willy Woo that plots multiple moving averages of Bitcoin’s mining difficulty on a chart. When the difficulty ribbon compresses (the moving averages converge), it signals that weaker miners are capitulating and shutting off machines, often indicating a market bottom and a potential buying opportunity. When the ribbon expands, it signals strong miner confidence and growing network hashrate.
Double Spend
An attack where someone attempts to spend the same Bitcoin twice. Bitcoin’s proof-of-work consensus mechanism and blockchain structure prevent double spending by requiring network-wide agreement on transaction validity. Each confirmation makes a double spend exponentially more difficult. This is the fundamental problem that Bitcoin’s mining system was designed to solve.
Dust / Dust Limit
Dust refers to a tiny amount of Bitcoin that is smaller than the transaction fee required to spend it. Bitcoin Core defines the dust limit as 546 satoshis for standard transactions and 294 satoshis for native SegWit transactions. Outputs below this threshold are considered “dust” and are typically rejected by nodes to prevent blockchain bloat. Miners receiving very small pool payouts may accumulate dust that is economically impractical to move. A dust attack is a privacy threat where an attacker sends tiny amounts to many wallets to track spending patterns and deanonymize users.
E
Efficiency (J/TH)
A measure of how effectively a mining device converts electricity into hashrate, expressed in joules per terahash (J/TH). Lower J/TH values indicate better efficiency and lower electricity costs per unit of work. The Bitaxe Gamma 602 achieves approximately 15 J/TH, while the NerdQaxe++ achieves approximately 15.65 J/TH. Efficiency is the single most important factor in long-term mining profitability, especially in regions with higher electricity costs. Use our Bitcoin Mining Profitability Calculator to model costs.
Epoch
A period in Bitcoin’s timeline defined by halving events, occurring approximately every four years (210,000 blocks). Each epoch reduces the block subsidy by half. Bitcoin is currently in its fifth epoch (blocks 840,001 through 1,050,000), with a 3.125 BTC subsidy per block. The first epoch (2009-2012) had a 50 BTC subsidy.
ESP32-S3
A Wi-Fi and Bluetooth-enabled microcontroller manufactured by Espressif Systems. The ESP32-S3 powers the AxeOS firmware on all Bitaxe miners, handling Wi-Fi connectivity, web dashboard hosting, pool communication, and real-time monitoring of hashrate, temperature, and shares.
Exahash (EH/s)
A unit of hashrate equal to one quintillion (10^18) hashes per second. Bitcoin’s total network hashrate is measured in exahashes per second. As of early 2026, the Bitcoin network exceeds 800 EH/s, representing an enormous amount of computational power securing the blockchain.
ExtraNonce
An additional nonce value embedded in the coinbase transaction that provides miners with extra hash search space beyond the 32-bit nonce in the block header. When a miner exhausts all approximately 4.3 billion possible nonce values without finding a valid hash, the extraNonce is incremented, which changes the Merkle root and creates an entirely new set of block header hashes to try. This is essential for modern ASIC miners that can exhaust the standard nonce space in under a second.
F
F2Pool
One of the oldest and largest Bitcoin mining pools, established in 2013. F2Pool provides approximately 10% of the total Bitcoin network hashrate in 2026 and supports multiple payout methods including PPS+ and FPPS. The pool supports mining multiple cryptocurrencies beyond Bitcoin and operates global server infrastructure. F2Pool is known for its early adoption of merged mining and transparent operations, though fees (2-4% depending on payout method) are higher than some competitors. Learn more about pools: Understanding Mining Pools.
Fallback Pool
A secondary mining pool configured as a backup in case the primary pool server goes offline. Configuring a fallback pool URL, port, and user credentials in your miner’s settings prevents downtime and ensures continuous hashing. Most mining firmware, including AxeOS, supports at least one fallback pool configuration.
Fan Speed
The rotational speed of a miner’s cooling fans, measured in RPM (revolutions per minute) or as a percentage of maximum speed. Higher fan speeds improve cooling but increase noise and power consumption. Home miners often balance fan speed against noise levels for comfortable residential operation.
Fee Rate (sat/vB)
The transaction fee measured per unit of transaction data, expressed in satoshis per virtual byte (sat/vB) in Bitcoin. Miners prioritize transactions with higher fee rates when building blocks, as they maximize revenue from limited block space. Fee rates increase when the mempool is congested with many pending transactions. Checking the current fee rate at mempool.space helps users send timely transactions without overpaying.
Firmware
Software embedded in mining hardware that controls operations including hashrate management, temperature regulation, pool communication, and user interfaces. Open-source firmware like AxeOS (for Bitaxe) allows community-driven development and transparency. Third-party firmware options like Braiins OS and LuxOS offer advanced features for industrial miners. Keeping firmware updated ensures compatibility, performance, and security. Guide: How to Update Bitaxe Firmware.
Fork
A divergence in the blockchain or protocol. Forks come in several forms. A soft fork is a backward-compatible protocol upgrade that tightens rules (e.g., SegWit). A hard fork is a non-backward-compatible change that creates a permanent chain split (e.g., Bitcoin Cash splitting from Bitcoin). A temporary fork occurs when two miners find valid blocks at nearly the same time, with the longer chain ultimately winning. Miners signal support for proposed soft forks through version bits in block headers.
Foundry USA
The largest Bitcoin mining pool in 2026, controlling over 20% of the global network hashrate. Foundry is operated by Digital Currency Group (DCG) and is anchored in the United States. The pool uses FPPS payouts and requires KYC/AML compliance for all participants. Foundry offers institutional-grade services including treasury management, BTC custody, and derivatives products. While Foundry provides scale and regulatory clarity, its KYC requirements and centralized structure may deter miners seeking privacy and decentralization. Learn about pool types: Understanding Mining Pools.
FPGA (Field-Programmable Gate Array)
A type of integrated circuit that can be configured after manufacturing for specific tasks, including cryptocurrency mining. FPGAs were used in Bitcoin mining between the CPU and ASIC eras (approximately 2011-2012) but are now obsolete for Bitcoin mining, as purpose-built ASICs are far more efficient at SHA-256 hashing.
FPPS (Full Pay-Per-Share)
A mining pool payout method that pays miners for each valid share submitted, including both the block subsidy and estimated transaction fee revenue. FPPS provides the most predictable income for pool miners, as payouts are not affected by whether the pool actually finds a block during that period. The pool absorbs the variance risk. Foundry USA, AntPool, and F2Pool offer FPPS payouts.
Full Node
A computer running Bitcoin software (such as Bitcoin Core or StartOS on a Start9 Server One) that independently validates every transaction and block against consensus rules, stores the entire blockchain, and relays data to other nodes. Running a full node is essential for trustless solo mining and strengthens the Bitcoin network by adding an independent verifier. Learn more: Bitcoin Node: Benefits, Requirements and Setup.
G
Genesis Block
Block 0, the very first block in the Bitcoin blockchain, mined by Satoshi Nakamoto on January 3, 2009. The genesis block contains the famous embedded message in its coinbase field: “The Times 03/Jan/2009 Chancellor on brink of second bailout for banks.” It is hardcoded into every Bitcoin node’s software, cannot be spent, and serves as the immutable foundation of the entire blockchain.
Gigahash (GH/s)
A unit of hashrate equal to one billion (10^9) hashes per second. Entry-level home miners like the Bitaxe Supra produce approximately 650 GH/s, while the Bitaxe Gamma 602 produces approximately 1,200 GH/s (1.2 TH/s).
Glass Frit Residue
Visual spots or residue that may appear on ASIC chip surfaces as a byproduct of the semiconductor manufacturing process. Glass frit is cosmetic and does not affect mining performance or chip lifespan. Some buyers mistake it for damage, but it is entirely normal. Learn more: Glass Frit Residue Explained.
GPU Mining
Mining cryptocurrency using a graphics processing unit (GPU). GPU mining was viable for Bitcoin from approximately 2010 to 2013. GPUs are completely obsolete for Bitcoin mining in 2026, as ASIC miners are orders of magnitude more efficient at SHA-256 hashing. GPUs are still used for mining some altcoins with ASIC-resistant algorithms. Read the history: The Evolution of Bitcoin Mining: From CPUs to ASICs.
H
Halving
A programmed event that cuts the Bitcoin block subsidy in half every 210,000 blocks (approximately every four years). Halvings reduce the rate of new Bitcoin creation, enforce scarcity, and have historically preceded significant price increases. The most recent halving occurred in April 2024, reducing the subsidy from 6.25 BTC to 3.125 BTC per block. The next halving is expected around 2028, reducing the subsidy to 1.5625 BTC.
Hard Fork
A non-backward-compatible change to Bitcoin’s consensus rules that creates a permanent split in the blockchain. Nodes that do not upgrade to the new rules will reject blocks created under those rules, resulting in two separate chains. The most notable Bitcoin hard fork was the creation of Bitcoin Cash (BCH) in August 2017. Hard forks differ from soft forks, which are backward-compatible and do not create permanent splits.
Hash
The output of a cryptographic hash function. In Bitcoin mining, miners repeatedly compute SHA-256 hashes of block headers to find an output that falls below the current difficulty target. A valid hash is the proof-of-work that allows a miner to add a new block to the blockchain. Each hash is a 256-bit (64 hexadecimal character) string that appears random but is entirely deterministic.
Hash Function
A mathematical algorithm that converts any input data into a fixed-length output (hash). Bitcoin uses SHA-256, which produces a 256-bit hash. Hash functions are deterministic (same input always produces the same output), fast to compute, and practically impossible to reverse-engineer. Even a single bit change in the input produces a completely different output, a property called the avalanche effect.
Hashing
The act of feeding data into a cryptographic hash function to produce a hash output. In Bitcoin mining, hashing refers to the continuous process of running block header data through the SHA-256 algorithm billions or trillions of times per second to find a valid proof-of-work. Every ASIC miner is essentially a dedicated hashing machine. The Bitaxe Gamma 602 performs approximately 1.2 trillion hashes per second.
Hashprice
The estimated daily revenue per unit of hashrate, typically expressed in USD per TH/s per day. Hashprice is influenced by Bitcoin’s price, network difficulty, transaction fees, and the block subsidy. It is a key metric for evaluating mining profitability across different hardware and time periods. When hashprice drops, less efficient miners become unprofitable and may shut down. Use our Mining Calculator to estimate current earnings.
Hashrate
The total computational power a miner or network produces, measured in hashes per second. Common units include GH/s (gigahash), TH/s (terahash), PH/s (petahash), and EH/s (exahash). Higher hashrate increases the probability of finding a valid block. For home miners, hashrate ranges from 650 GH/s (Bitaxe Supra) to 37.5 TH/s (Canaan Avalon Mini 3). The total Bitcoin network hashrate exceeds 800 EH/s in 2026.
Hashrate Heating
The practice of capturing waste heat from Bitcoin mining hardware to heat a home, office, or water supply. Mining hardware converts nearly 100% of consumed electricity into heat, making it a functional space heater that also earns Bitcoin. Products like the Canaan Avalon Mini 3 and the Superheat H1 are designed specifically for this purpose. Learn more: What is Hashrate Heating?
Hashrate Index
A data platform operated by Luxor that tracks Bitcoin mining economics including hashprice, network hashrate, difficulty adjustments, miner revenue, and ASIC market prices. Hashrate Index is widely used by miners and analysts to monitor profitability trends, compare hardware, and make informed decisions about when to buy, sell, or deploy mining equipment.
Heatsink
A passive cooling component (typically aluminum or copper) attached to an ASIC chip to dissipate heat through thermal conduction and convection. Upgraded heatsinks and copper MOSFET kits can improve cooling performance and enable higher stable hashrates on open-source miners.
HODL
A term originating from a misspelled Bitcoin forum post in 2013, now commonly interpreted as “Hold On for Dear Life.” In mining context, HODLing refers to the strategy of accumulating mined Bitcoin rather than selling it immediately, betting on long-term price appreciation. Many home miners HODL their block rewards and mining pool payouts.
Home Mining
The practice of operating Bitcoin mining hardware in a residential setting. Home mining has become increasingly accessible through low-power, open-source devices like Bitaxe and NerdQaxe++ that consume minimal electricity and produce manageable noise levels. Solo Satoshi has shipped over 40,000 home mining devices to 70+ countries since May 2024. See: How to Start Bitcoin Mining in 2026.
Home Server
A personal computer running server software to host applications, store data, and run services privately in your home. The Start9 Server One 2026 runs StartOS with a Ryzen 7 6800H processor and can host a Bitcoin node, Lightning node, and other self-hosted applications. Solo Satoshi is Start9’s first official US distributor. Learn more: Home Server: The Complete 2026 Guide.
Hot Wallet
A Bitcoin wallet connected to the internet, offering convenience for frequent transactions but carrying higher security risk than cold storage. Software wallets on phones, desktops, and web browsers are hot wallets. Miners typically use hot wallets for small operational amounts and cold wallets for long-term storage of rewards.
I
Immersion Cooling
A cooling method where mining hardware is submerged in non-conductive dielectric liquid. Immersion cooling eliminates fan noise, enables higher overclocking, reduces temperatures more effectively than air cooling, and extends hardware lifespan. It is popular among industrial miners and advanced home miners seeking silent, high-performance setups.
Invalid Share
A share submitted to a mining pool that fails basic validation checks or does not meet the minimum pool difficulty requirement. Invalid shares are typically caused by bad overclocks, hardware errors, firmware bugs, or network corruption. A high rate of invalid shares indicates a problem with the miner’s hardware configuration and should be investigated immediately, as invalid shares earn no credit.
IP Address
A unique numerical identifier assigned to each device on a network. Miners access their miner’s AxeOS dashboard by entering its local IP address (e.g., 192.168.1.100) in a web browser. Static IP assignment prevents the dashboard address from changing after router restarts. Setting up your Bitaxe: Bitaxe Setup Made Simple.
J
Job
A unit of work assigned by a mining pool or node to a miner. Each job contains the data needed to compute hashes against a specific block template, including the block header and transaction data. Miners process jobs continuously, submitting valid shares back to the pool. When a new block is found on the network, all current jobs become stale and new jobs are issued.
Joules per Terahash (J/TH)
The standard unit for measuring mining hardware efficiency. It represents the amount of energy (in joules) consumed to produce one terahash of computational work. Lower values indicate better efficiency and lower operating costs. For reference, the Bitaxe Gamma 602 achieves approximately 15 J/TH, making it one of the most efficient open-source home miners available.
K
Kilowatt-Hour (kWh)
A unit of energy equal to one kilowatt of power sustained for one hour. Electricity is billed in kWh, making it the primary metric for calculating mining operational costs. A Bitaxe Gamma 602 consuming approximately 18 watts runs at about 0.432 kWh per day, costing roughly $0.07/day at $0.16/kWh. Use our Mining Calculator to estimate your costs.
KYC (Know Your Customer)
Identity verification requirements imposed by regulated financial institutions and some mining pools. KYC typically requires submitting government-issued identification, proof of address, and other personal information. Some mining pools like Foundry USA require KYC for participation. Many exchanges require KYC before miners can sell their mined Bitcoin for fiat currency. Non-KYC options include peer-to-peer exchanges, decentralized exchanges, and spending Bitcoin directly. Solo mining and connecting to non-KYC pools like CKPool or Ocean allows miners to earn Bitcoin without identity verification.
L
Latency
The time delay between a miner computing a share and the pool or node receiving it. Low latency reduces rejected and stale shares, improving mining efficiency. Wired network connections and geographically close pool servers minimize latency. For home miners on Wi-Fi, ensuring a strong 2.4 GHz signal to the Bitaxe is important for minimizing share rejections.
Lightning Network
A Layer 2 payment protocol built on top of Bitcoin that enables fast, low-cost off-chain transactions. Lightning payments are settled instantly and can handle micropayments as small as a single satoshi. Some mining pools offer Lightning payouts for faster, cheaper withdrawal of mining rewards, avoiding on-chain transaction fees entirely.
Lottery Mining
A colloquial term for solo mining with low-hashrate hardware, where the probability of finding a block is extremely small but the full block reward is earned if successful. Open-source miners like Bitaxe are often called “lottery miners” because each hash is a ticket with a chance to win the full block reward (currently 3.125+ BTC). Despite the long odds, multiple users have found blocks with home mining hardware purchased from Solo Satoshi. Learn more: What is Bitcoin Lottery Mining?
Luck
The random, probabilistic factor in determining whether a miner finds a valid block. Mining is fundamentally a game of probability. A miner with 1 TH/s has the same chance per hash as any other miner, and luck determines which miner finds the winning hash first. Pool luck is expressed as a percentage: above 100% means a block was found faster than statistically expected, below 100% means it took longer. Solo mining with low hashrate has extremely high variance, meaning luck plays an outsized role.
Luxor Pool
A US-based Bitcoin mining pool known for its institutional-grade services including SOC 2 compliance, API access, and granular workspace controls. Luxor uses FPPS payouts and has expanded beyond pooling into firmware development (LuxOS), hashrate derivatives, and the Hashrate Index analytics platform. Luxor is popular among professional miners who need enterprise features and regulatory compliance.
M
MARA Pool
A mining pool operated by Marathon Digital Holdings (MARA), a publicly traded Bitcoin mining company. MARA Pool represents Marathon’s effort to vertically integrate into the pool business, combining their own substantial hashrate with third-party miners. The pool primarily serves institutional and large-scale mining operations.
Mean Well Power Supply
A brand of reliable, industrial-grade power supply units commonly used in Bitcoin home mining. The Mean Well LRS-50-5 is recommended for single-chip 5V Bitaxe models, the LRS-350-5 for multi-chip 5V setups, and the LRS-600-12 for 12V models like the Bitaxe GT 801. See: Mean Well Power Supplies for Home Mining.
Mempool (Memory Pool)
The waiting area where unconfirmed Bitcoin transactions are held by nodes before being selected by miners for inclusion in a block. Miners typically prioritize transactions with the highest fee rates to maximize revenue. When the mempool is congested, transaction fees increase as users compete for limited block space. The mempool can be monitored in real-time at mempool.space. Each node maintains its own mempool, so the exact contents may vary slightly between nodes.
Merged Mining
A technique that allows miners to simultaneously mine multiple cryptocurrencies that use the same hashing algorithm without additional computational cost. For example, Bitcoin miners can merge-mine Namecoin or RSK at the same time as Bitcoin. The miner’s SHA-256 work applies to both chains, effectively earning rewards on multiple blockchains with the same hashrate.
Merkle Root
A single hash value in the block header that summarizes all transactions in a block using a Merkle tree data structure. The Merkle root allows efficient verification that a specific transaction is included in a block without downloading every transaction. Changing any transaction in the block changes the Merkle root entirely, ensuring data integrity.
Miner
A term referring to both the hardware device and the person or entity operating it to perform Bitcoin mining. Mining hardware ranges from compact home devices like the Bitaxe Gamma 602 (1.2 TH/s, ~18W) to industrial machines producing hundreds of TH/s at thousands of watts. See the full selection: Shop Bitcoin Miners.
Mining Algorithm
The specific cryptographic hash function a proof-of-work cryptocurrency uses for its mining process. Bitcoin uses SHA-256. Other algorithms include Scrypt (Litecoin, Dogecoin), Ethash (formerly Ethereum), KawPoW (Ravencoin), and RandomX (Monero). The mining algorithm determines which type of hardware (ASIC, GPU, or CPU) is most efficient for mining that particular coin.
Mining Calculator
A tool that estimates mining profitability based on inputs such as hashrate, power consumption, electricity cost, and current Bitcoin price and network difficulty. Solo Satoshi offers a free Bitcoin Mining Profitability Calculator that also estimates solo mining odds and daily satoshi earnings.
Mining Farm
A large-scale facility dedicated to Bitcoin mining, housing hundreds or thousands of ASIC miners. Mining farms typically operate in locations with cheap electricity, favorable climate for cooling, and supportive regulations. They invest heavily in power distribution, cooling infrastructure, and network connectivity. Mining farms represent the industrial side of Bitcoin mining, while home mining with devices like Bitaxe represents the decentralized, individual side.
Mining Log
A record of a miner’s operational data including accepted shares, rejected shares, best difficulty, hashrate, temperature, and errors. Monitoring the mining log helps diagnose issues and optimize performance. See: Understanding the Bitaxe Mining Log.
Mining Pool
A group of miners who combine their hashrate and share block rewards proportionally based on each miner’s contribution. Pools provide more consistent (but smaller) payouts compared to solo mining. In 2026, over 95% of all Bitcoin blocks are mined by pools. Popular pools include Foundry USA, AntPool, ViaBTC, F2Pool, Braiins Pool, Ocean, CKPool, Luxor, Binance Pool, SpiderPool, SBI Crypto, and MARA Pool. Solo mining pools like CKPool and Public Pool offer a hybrid approach where miners use pool infrastructure but keep the full reward if they find a block. See: Understanding Mining Pools.
Mining Rig
A complete mining system or setup. For GPU mining (altcoins), a rig typically includes a motherboard, multiple graphics cards, riser cables, power supplies, and a frame. For ASIC mining, each standalone miner device is often called a rig. A home mining rig might consist of a single Bitaxe Gamma 602 and a Mean Well power supply, or it could be a multi-unit cluster of NerdQaxe++ miners.
Mining Software
Software that connects mining hardware to the Bitcoin network or a mining pool and manages the mining process. Examples include AxeOS (built into Bitaxe), CGMiner, BFGMiner, Braiins OS, and LuxOS. Mining software handles pool communication, job processing, share submission, and hardware monitoring.
MiningOS (Tether MiningOS)
An open-source Bitcoin mining management platform launched by Tether in 2025. MiningOS provides firmware and tools for managing fleets of ASIC miners, including monitoring, autotuning, and remote management capabilities. The platform represents a significant investment in open-source mining infrastructure by a major company in the Bitcoin ecosystem. Learn more: Tether Launches MiningOS.
MOSFET
Metal-Oxide-Semiconductor Field-Effect Transistor, a component used in the power delivery circuitry of mining hardware. MOSFETs regulate the voltage and current flowing to ASIC chips. Upgrading to copper MOSFET cooling kits can improve thermal performance and allow for higher stable ASIC frequencies. Solo Satoshi offers copper MOSFET heatsink upgrades.
N
NerdQaxe++
A quad-chip open-source Bitcoin miner using four BM1370 ASICs to produce approximately 6+ TH/s at around 100W (12V). The NerdQaxe++ delivers approximately 15.65 J/TH efficiency and is assembled in the USA. Two confirmed Bitcoin blocks have been found using NerdQaxe++ hardware, including block #920,440, which earned approximately 3.15 BTC (about $342,000). The customer who mined that block shared that the reward would be used to pay off his home. Shop the latest: NerdQaxe++ Rev 6.1.
Network Hashrate (Nethash)
The total combined hashrate of all miners on the Bitcoin network. Network hashrate is estimated from recent block times and current difficulty. A rising network hashrate indicates more miners are active, increasing competition for block rewards. As of early 2026, Bitcoin’s network hashrate exceeds 800 EH/s. Network hashrate data can be tracked at platforms like Hashrate Index, mempool.space, and blockchain explorers.
Node
A computer running Bitcoin software that validates transactions and blocks, stores the blockchain, and relays data to peers. Running a node is essential for trustless solo mining, as it generates independent block templates and verifies blocks without relying on third parties. Nodes can be run on dedicated hardware like the Start9 Server One or general-purpose computers. See: Bitcoin Node: Benefits, Requirements and Setup.
Nonce
A 32-bit (4-byte) number in the block header that miners increment or randomize with each hash attempt. The nonce is the primary variable miners change when searching for a hash below the target difficulty. Because the nonce space is limited to approximately 4.3 billion values, miners also modify other header fields (timestamp, extraNonce in the coinbase transaction) to extend their search space. Modern ASICs can exhaust all nonce values in well under one second.
O
Ocean Pool
A transparent, non-custodial Bitcoin mining pool co-founded by Jack Dorsey. Ocean pays miners directly via coinbase transaction outputs (no withdrawal delays or custodial holding) and supports the DATUM protocol, which allows miners to select their own transactions when constructing block templates. Ocean does not require KYC and emphasizes decentralization, transparency, and miner sovereignty. It is popular among privacy-focused and decentralization-minded home miners. Learn about pools: Understanding Mining Pools.
Open-Source Mining
Bitcoin mining using hardware and software with publicly available designs, schematics, and code. The open-source mining movement, led by projects like Bitaxe and NerdQaxe++, allows anyone to verify, modify, and build mining hardware. All Bitaxe designs are published at bitaxe.org. Solo Satoshi is a verified seller recognized by bitaxe.org and a key distributor of open-source mining products.
Orphan Block (Stale Block)
A valid block that is not included in the main blockchain because another block at the same height was propagated and accepted by the network first. Orphaned blocks cost the miner who found them the full block reward. Fast block propagation and low-latency network connections reduce orphan risk. The term “stale block” is technically more accurate, as “orphan block” historically referred to blocks with unknown parents.
OSMU (Open Source Miners United)
The primary community hub for open-source Bitcoin mining enthusiasts. OSMU operates a Discord server where Bitaxe, NerdQaxe++, and other open-source mining projects are discussed, firmware updates are shared, and troubleshooting support is provided. OSMU serves as the central gathering point for the open-source mining community.
Overclocking
Increasing an ASIC’s clock frequency and/or voltage beyond default settings to achieve higher hashrate. Overclocking requires adequate cooling and increases power consumption. It also increases heat output and may reduce hardware lifespan if done improperly. See guides: How to Overclock Bitaxe Gamma and NerdQaxe++ Overclocking Guide.
Overheat Mode
A firmware safety feature that automatically reduces ASIC frequency or shuts down the miner when chip temperature exceeds a set threshold. Overheat mode protects hardware from thermal damage but reduces hashrate while active. Advanced users with proper cooling setups may adjust or disable overheat mode to maintain peak performance. See: How to Disable Overheat Mode.
P
Parasite Pool
A mining pool concept where miners direct their hashrate to support Bitcoin network security through specific pool configurations. Parasite Pool allows home miners to contribute to decentralization while attempting to find solo blocks. See the setup guide: How to Connect Your Bitaxe to Parasite Pool.
Payback Period
The amount of time required for mining hardware to generate revenue equal to its purchase cost. Payback period depends on Bitcoin’s price, network difficulty, electricity costs, hardware efficiency, and whether the miner operates solo or in a pool. For home miners, payback periods vary widely. Solo miners who find a block achieve instant payback and substantial profit.
Payout Method
The formula a mining pool uses to distribute block rewards among its participants. Common methods include PPS (Pay-Per-Share), FPPS (Full Pay-Per-Share), PPS+ (PPS plus shared transaction fees), PPLNS (Pay Per Last N Shares), and proportional. Each method offers different tradeoffs between payout consistency, risk allocation, and total expected earnings. FPPS is the most predictable, while PPLNS rewards long-term, consistent miners.
Petahash (PH/s)
A unit of hashrate equal to one quadrillion (10^15) hashes per second. Large mining operations, hosting facilities, and mid-tier pools measure their combined hashrate in petahashes.
Pool Mining
Mining Bitcoin collaboratively by combining hashrate with other miners in a pool. Block rewards are distributed among pool participants based on their contributed shares. Pool mining provides more frequent, smaller payouts compared to solo mining, reducing income variance. In 2026, pool mining accounts for over 95% of all Bitcoin blocks found. See: Understanding Mining Pools.
Power Supply Unit (PSU)
A device that converts AC mains power to the DC voltage required by mining hardware. Choosing the correct PSU is essential for safe and efficient operation. Bitaxe models require 5V DC (via Mean Well LRS-50-5), while the Bitaxe GT 801 requires 12V DC. Always follow the 80% rule when sizing your power supply for continuous loads. See: Mean Well PSU Guide.
PPLNS (Pay Per Last N Shares)
A mining pool payout method that distributes rewards based on the number of shares a miner contributed during the last N shares submitted to the pool before a block is found. PPLNS rewards consistent, long-term miners and penalizes pool hoppers who switch pools frequently. Payouts are less predictable than PPS or FPPS methods but can yield higher returns over time because pool fees are typically lower. Braiins Pool uses PPLNS exclusively.
PPS (Pay-Per-Share)
A mining pool payout method that pays miners a fixed amount for each valid share submitted, based on the expected value of a share given the current difficulty and block reward. PPS provides predictable, steady income and shifts all variance risk to the pool operator. PPS typically excludes transaction fees from payouts (unlike FPPS, which includes them). Pool fees for PPS are usually higher to compensate for the risk the pool assumes.
PPS+ (PPS Plus)
A hybrid mining pool payout method that combines PPS for the block subsidy portion with PPLNS for the transaction fee portion. The block reward is paid at a fixed rate per share (PPS), providing stable base income. Transaction fees are distributed variably based on shares contributed to the last N shares (PPLNS), allowing miners to benefit from periods of high transaction fees. F2Pool offers PPS+ as one of its primary payout methods.
Private Key
A secret cryptographic key that proves ownership of Bitcoin and authorizes transactions from a wallet address. Private keys must be kept secure and never shared. Loss of a private key means permanent loss of access to the associated Bitcoin. Hardware wallets like the Blockstream Jade store private keys offline for maximum security.
Proof-of-Work (PoW)
Bitcoin’s consensus mechanism requiring miners to expend computational energy to find a valid block hash below the current difficulty target. Proof-of-work secures the network by making it prohibitively expensive to attack, incentivizes honest participation through block rewards, and enables trustless consensus without a central authority. Every hash computed by a Bitcoin miner is part of the proof-of-work process. Bitcoin is the most prominent proof-of-work cryptocurrency.
Propagation
The process of distributing a newly found block across the Bitcoin network. Fast propagation is critical for miners because blocks that reach the network slowly may be orphaned if another miner finds a competing block first. Well-connected nodes and low-latency networks improve propagation speed. Compact block relay (BIP 152) significantly reduced propagation times.
Public Key
A cryptographic key derived from a private key that can be shared publicly. Public keys are used to generate Bitcoin addresses for receiving payments and mining rewards. They cannot be used to reverse-engineer the private key.
Public Pool
A solo mining pool that allows individual miners to attempt finding blocks independently while using pool infrastructure for block submission. Public Pool can be self-hosted on platforms like Umbrel. A Solo Satoshi customer ran a self-hosted Public Pool instance on Umbrel when their NerdQaxe++ cluster found block #920,440, earning approximately 3.15 BTC (~$342,000). The miner shared that the reward would be used to pay off his home.
Q
Quiet Mining
Operating Bitcoin mining hardware with minimal noise output, a priority for home miners in residential environments. Strategies include using low-RPM fans, passive heatsink cooling, immersion cooling, or inherently quiet devices like Bitaxe miners that produce minimal noise during operation. The Bitaxe Gamma 602 operates at whisper-quiet levels, making it suitable for a desk, living room, or bedroom.
R
Rejected Share
A share submitted to a mining pool that is not accepted because it arrived too late (stale), contained errors, or did not meet the required difficulty. A high rejection rate typically indicates network latency issues, misconfiguration, or unstable hardware. Monitoring rejected shares through your mining log is essential for optimizing efficiency. See: Understanding the Bitaxe Mining Log.
Renewable Energy Mining
Mining Bitcoin using solar, wind, hydroelectric, or other renewable energy sources. Renewable energy reduces operational costs and environmental impact. Home miners increasingly use solar panels to power low-wattage devices like Bitaxe miners, achieving near-zero electricity costs during daylight hours. See: Is Bitcoin Mining Still Profitable?
Replace-By-Fee (RBF)
A Bitcoin transaction feature that allows a sender to replace an unconfirmed transaction in the mempool with a new version that pays a higher fee. RBF helps users speed up stuck transactions during periods of high network congestion. Miners benefit from RBF because it increases the fees available in the mempool, as users bid up fees to get their transactions confirmed faster.
ROI (Return on Investment)
The time or percentage measure of when mining hardware generates revenue equal to its purchase cost. ROI for home mining hardware depends on Bitcoin’s price, network difficulty, electricity costs, and hardware efficiency. Solo miners who find a block achieve instant, massive ROI. Pool miners accumulate smaller returns over time. Use our Mining Calculator to estimate your ROI.
S
Satoshi (sat)
The smallest unit of Bitcoin, named after Bitcoin’s creator Satoshi Nakamoto. One Bitcoin equals 100,000,000 satoshis. Mining rewards and transaction fees are often denominated in satoshis. At a Bitcoin price of $100,000, one satoshi equals $0.001. Many home miners measure their daily earnings in sats. Use our Mining Calculator for sat/USD conversions.
Satoshi Nakamoto
The pseudonymous creator of Bitcoin, who published the Bitcoin whitepaper in October 2008 and mined the genesis block on January 3, 2009. Satoshi communicated through forums and email, contributed to early Bitcoin development, and then disappeared from public activity in 2011. Satoshi’s true identity has never been conclusively determined. The ethos of decentralization established by Nakamoto continues to inspire open-source mining and solo mining communities.
SBI Crypto Pool
A Bitcoin mining pool owned by Japanese conglomerate SBI Group. SBI Crypto Pool caters to a global miner base with an emphasis on operational reliability and institutional alignment. While holding a smaller hashrate share than the largest pools, it remains strategically relevant in the Asian mining market.
Seed Phrase (Recovery Phrase)
A set of 12 or 24 words generated by a Bitcoin wallet that serves as a backup for all private keys and addresses in that wallet. The seed phrase is the master key to an entire wallet. If a hardware wallet is lost or damaged, the seed phrase can restore complete access to all funds on a new device. Seed phrases must be stored securely offline and never shared, photographed, or entered into websites. Every miner storing Bitcoin rewards should keep their seed phrase safe. See: Choosing the Right Wallet.
SegWit (Segregated Witness)
A Bitcoin protocol upgrade activated in August 2017 (BIP 141) that restructures how transaction data is stored by separating (segregating) signature data (witness) from transaction data. SegWit fixed the transaction malleability bug, enabled the Lightning Network, and increased effective block capacity by introducing the block weight measurement system. SegWit addresses begin with “bc1” (bech32 format) and benefit from lower transaction fees due to the witness data discount. Miners and pools widely support SegWit transactions.
SHA-256
Secure Hash Algorithm 256-bit, the cryptographic hash function used in Bitcoin’s proof-of-work system. SHA-256 takes any input and produces a fixed 256-bit (32-byte) hash. Bitcoin miners must find a SHA-256 hash of a block header that falls below the current difficulty target. All Bitcoin ASIC chips, including the BM1370 used in Bitaxe miners, are designed specifically to compute SHA-256 at maximum speed. Bitcoin actually applies SHA-256 twice (double SHA-256) to block headers.
Share
A partial proof-of-work solution submitted by a miner to a pool. Shares prove that a miner is actively hashing and contributing computational power. While most shares do not meet the full network difficulty required to solve a block, they demonstrate proportional work for payout purposes in pool mining. See: What Are Shares in Bitcoin Mining?
Silicon Lottery
The natural variation in performance between individual ASIC chips produced in the same manufacturing batch. Due to microscopic differences in silicon fabrication, some chips achieve higher hashrates or better efficiency than others at the same voltage and frequency settings. This is why two identical Bitaxe Gamma 602 units may perform slightly differently. Learn more: The Silicon Lottery in Bitcoin Mining.
Soft Fork
A backward-compatible change to Bitcoin’s consensus rules that tightens the existing rules without creating a permanent blockchain split. Nodes that do not upgrade still accept blocks created under the new rules. Notable soft forks include SegWit (2017) and Taproot (2021). Miners signal support for proposed soft forks through version bits in mined block headers, and activation requires sufficient miner signaling.
Solo Miner
An individual miner operating independently, attempting to solve Bitcoin blocks alone for the full block reward. Solo miners use their own hardware and typically run a full node or connect to a solo mining pool like CKPool or Public Pool. Solo mining supports network decentralization and offers the chance to earn the entire block reward (currently 3.125+ BTC). See: What is a Solo Miner?
Solo Mining
Mining Bitcoin independently without joining a traditional mining pool. Solo miners submit their own blocks to the network and keep the full reward if they find a valid block. While the odds of finding a block with a single home miner are low, documented wins prove it is possible. Solo Satoshi customers have earned verified block rewards exceeding $342,000. The interval between confirmed open-source miner block finds has been shrinking: 229 days, then 179 days, then 52 days, then 25 days, reflecting the growing installed base. Browse solo miners to get started.
Solo Mining Pool
A pool-like service that provides infrastructure for submitting blocks while allowing miners to keep the full block reward if they find one. Unlike traditional pools, solo mining pools do not split rewards among participants. Popular solo mining pools include CKPool, Public Pool, and Ocean (in solo mode). Learn how to set up: Solo Mine with Bitaxe Using UmbrelOS.
SpiderPool
A Bitcoin mining pool that has rapidly risen to prominence with stable infrastructure and competitive FPPS settlement. SpiderPool is designed specifically for institutional users and operates US-centric infrastructure, making it a choice for professional and large-scale miners seeking stability and compliance services.
Stale Share
A share that arrives at the mining pool after the pool has already moved on to a new block template because a new block was found on the network. Stale shares are valid work but are no longer useful because they reference an outdated job. They do not count toward payouts. High stale share rates indicate latency issues between the miner and pool server. Stale shares differ from rejected shares, which fail validation checks entirely.
Stratum Protocol
The standard communication protocol between mining hardware and mining pools, originally developed in 2012. Stratum defines how pools send jobs (work units) to miners and how miners submit completed shares back to pools. The protocol operates over TCP connections and uses JSON-RPC messaging. While the original Stratum (v1) remains widely used, it sends data unencrypted and gives pools full control over block template construction.
Stratum V2
An upgraded mining communication protocol that adds end-to-end encryption, allows miners to construct their own block templates (job negotiation), and reduces bandwidth usage through binary encoding. Stratum V2 increases miner privacy, supports decentralization by removing pool control over transaction selection, and improves security against man-in-the-middle attacks. Braiins Pool was among the first to implement Stratum V2. See: DATUM and Stratum V2: Decentralization.
Stratum URL
The server address a miner connects to for receiving mining jobs, formatted as stratum+tcp://pool.com:port. Configuring the correct Stratum URL is the first step in connecting any miner to a pool. Most miners also support a fallback URL for redundancy. Setup guide: Bitaxe Setup Made Simple.
T
Taproot
A Bitcoin protocol upgrade activated in November 2021 (BIPs 340, 341, 342) that introduced Schnorr signatures, improved scripting capabilities, and enhanced privacy. Taproot makes complex transactions (such as multisig or Lightning channel opens) look identical to simple transactions on the blockchain, improving privacy for all users. Miners benefit from Taproot because Schnorr signature aggregation reduces transaction data size, potentially increasing the number of transactions (and fees) that fit in a block.
Target
A 256-bit number that a block header’s hash must be less than or equal to for the block to be considered valid. The target is derived from the current difficulty and is stored in compact form (nBits) in the block header. A lower target means higher difficulty and harder mining. The target is recalculated every 2,016 blocks during the difficulty adjustment.
Terahash (TH/s)
A unit of hashrate equal to one trillion (10^12) hashes per second. Most home mining hardware is measured in TH/s. The Bitaxe Gamma 602 produces 1.2 TH/s, the NerdQaxe++ produces 6+ TH/s, and the Canaan Avalon Mini 3 produces 37.5 TH/s.
The 80% Rule
A safety guideline for home mining stating that continuous electrical loads should not exceed 80% of a circuit’s rated capacity. For a standard 15-amp circuit in the US, continuous load should not exceed 12 amps (1,440 watts at 120V). Following this rule prevents overheating, tripped breakers, and fire hazards when running mining hardware 24/7. See: The 80% Rule for Home Mining.
Thermal Throttling
An automatic reduction in ASIC clock speed triggered when chip temperature exceeds safe operating limits. Thermal throttling protects hardware from damage but reduces hashrate and mining output. Proper cooling prevents throttling and maintains consistent performance.
Timestamp
A field in the block header recording the approximate time a block was mined, expressed as Unix time (seconds since January 1, 1970). Miners can adjust the timestamp within protocol-defined bounds (must be greater than the median of the last 11 blocks and less than 2 hours in the future), providing additional hash search space beyond the nonce.
Transaction Fee
A payment in satoshis attached to a Bitcoin transaction by the sender to incentivize miners to include it in a block. Transaction fees vary based on network congestion and transaction data size (measured in sat/vB). Miners collect all fees from transactions included in the blocks they mine, supplementing the block subsidy. As block subsidies decrease through halvings, transaction fees become an increasingly important part of mining revenue.
Transaction Malleability
A vulnerability in Bitcoin’s original transaction format that allowed the transaction ID (TXID) to be changed before confirmation without invalidating the transaction itself. This made it difficult to build reliable second-layer protocols. SegWit fixed transaction malleability in 2017 by moving signature data to a separate witness structure, enabling the Lightning Network and other Layer 2 solutions.
U
Umbrel / UmbrelOS
A user-friendly operating system for running a personal Bitcoin node, Lightning node, and self-hosted applications on home hardware. UmbrelOS can host Public Pool for trustless solo mining. A Solo Satoshi customer ran a self-hosted Public Pool instance on Umbrel when their NerdQaxe++ cluster found block #920,440, earning approximately $342,000. Setup guide: Solo Mine with Bitaxe Using UmbrelOS.
Underclocking
Reducing an ASIC’s clock frequency below default settings to decrease power consumption and heat output at the expense of lower hashrate. Underclocking improves efficiency (J/TH) and extends hardware lifespan, making it useful for miners in regions with higher electricity costs or limited cooling capacity.
Unconfirmed Transaction
A Bitcoin transaction that has been broadcast to the network and is sitting in the mempool but has not yet been included in a mined block. Unconfirmed transactions are pending and can be replaced via RBF (Replace-By-Fee) or may be dropped if the mempool fills beyond capacity. Miners select unconfirmed transactions from the mempool to include in blocks.
UTXO (Unspent Transaction Output)
The fundamental unit of Bitcoin ownership. Every Bitcoin balance is composed of UTXOs, which are outputs from previous transactions that have not yet been spent. When a miner receives a block reward, it creates a new UTXO in the coinbase transaction. Efficient UTXO management (consolidating small UTXOs during low-fee periods) helps reduce future transaction fees. A wallet’s balance is the sum of all its UTXOs.
V
Variance
The statistical deviation between expected and actual mining results. High variance means results can differ dramatically from expectations in the short term. Solo mining with low hashrate has extremely high variance, meaning a miner might find a block in one day or wait years. Pool mining reduces variance by distributing rewards across all participants, smoothing income over time.
vByte (Virtual Byte)
A unit of measurement for the size of Bitcoin transactions after the SegWit upgrade. One vByte equals 4 weight units. The maximum block size in vBytes is 1 million (equivalent to 4 million weight units). Transaction fees are quoted in sat/vB (satoshis per virtual byte). SegWit transactions have smaller vByte sizes than legacy transactions because witness data receives a 75% discount.
ViaBTC
One of the most established global Bitcoin mining pools, founded in 2016 and holding approximately 10% of the global hashrate in 2026. ViaBTC was one of the first pools to adopt the PPS payout method and supports multiple payout options including PPS, PPLNS, and solo mining. The pool supports over 20 cryptocurrency assets and operates distributed servers worldwide. ViaBTC mining fees are 4% for PPS and 2% for PPLNS. Learn more about pools: Understanding Mining Pools.
Voltage
The electrical potential difference supplied to ASIC chips, measured in volts (V). Proper voltage is critical for stable mining operation. Bitaxe models operate on 5V DC input, while the Bitaxe GT 801 requires 12V DC. Adjusting core voltage (along with frequency) is a key part of overclocking and tuning.
W
Waste Heat
Thermal energy produced by mining hardware as a byproduct of computation. ASIC miners convert nearly 100% of consumed electricity into heat. This “waste” can be repurposed for home heating, water heating, greenhouse warming, or other productive uses, turning an operational cost into a dual benefit. See: Hashrate Heating and Heatpunks: Bitcoin Mining Heat Reuse.
Watt (W)
The standard unit of electrical power. Mining hardware power consumption is measured in watts. The Bitaxe Gamma 602 draws approximately 18W, the NerdQaxe++ draws approximately 100W, and the Canaan Avalon Mini 3 draws approximately 1,100W. Lower wattage per terahash indicates better efficiency.
Weight Unit (wu)
The base unit used to measure the size of Bitcoin transactions and blocks since the SegWit upgrade. Each block is limited to 4 million weight units. For legacy transaction data, each byte counts as 4 weight units. For SegWit witness data, each byte counts as 1 weight unit. This gives SegWit transactions a discount on block space. One vByte equals 4 weight units.
Whitepaper (Bitcoin Whitepaper)
The foundational document titled “Bitcoin: A Peer-to-Peer Electronic Cash System,” published by Satoshi Nakamoto on October 31, 2008. The whitepaper describes Bitcoin’s proof-of-work mining system, blockchain structure, and economic incentives. It remains the definitive reference for understanding Bitcoin’s design and is freely available at bitcoin.org/bitcoin.pdf.
Wi-Fi (2.4 GHz)
The wireless networking standard used by Bitaxe and other ESP32-based miners to connect to a local network and the internet. All Bitaxe models use 2.4 GHz Wi-Fi only (5 GHz is not supported). A stable Wi-Fi connection is essential for consistent pool communication and share submission. Ethernet adapters are not natively supported on Bitaxe hardware. Setup guide: Bitaxe Setup Made Simple.
Worker
An identifier assigned to an individual mining device within a pool setup. Worker names are typically appended to the wallet address in the Stratum user field (e.g., bc1q…xyz.worker1). Workers allow miners to track the performance and contribution of each device separately in pool dashboards. Home miners running multiple Bitaxe units often assign unique worker names to each device.
Z
Zero-Confirmation Transaction
A Bitcoin transaction that has been broadcast to the network but not yet included in any mined block (zero confirmations). Zero-confirmation transactions carry a risk of being reversed or double-spent, as they have not yet been secured by proof-of-work. Merchants and exchanges typically wait for one or more confirmations before considering a payment final. Mining rewards require 100 confirmations (coinbase maturity) before they can be spent.
