BlockchainIntermediate#Infrastructure#Security
Mining
M
Definition
In a proof-of-work system, the process of building candidate blocks and repeatedly hashing their headers until one meets the network target. A valid block is still accepted only if it follows the network's consensus rules.
Source reviewed
- Bitcoin Developer Guide: Mining opens in a new tab
Supports: Documents Bitcoin mining, solo and pool workflows, target thresholds, shares, and reward distribution concepts; pool terms vary.
- Bitcoin Developer Guide: Block Chain opens in a new tab
Supports: Documents proof of work, consensus validation, competing blocks, historical modification cost, and the limits of majority hash power in Bitcoin.
Concept Diagram
Key Takeaways
1
Mining attempts proof-of-work for candidate blocks; full nodes still enforce consensus validity
2
Finding a block and receiving a final reward are probabilistic and pool-specific outcomes
3
Majority hash power can affect history revision but cannot override every consensus or ownership rule
4
Rewards, fees, difficulty, costs, and mining economics change by network and time
Practical Example
A miner considers joining a pool. They inspect its payout method, fees, minimum payout, custody, jurisdiction, hardware and power costs, and the network's current rules. They do not treat an estimated hashrate share or a past block subsidy as a promised payment.
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Related Terms
Blockchain
ASIC (Application-Specific Integrated Circuit)Special-purpose hardware designed to perform a narrow computation efficiently. In proof-of-work mining, an ASIC is normally built for a particular hashing algorithm; it cannot be assumed to work for every network or remain profitable.
Blockchain
Consensus MechanismThe protocols, incentives, and rules that let distributed network participants select and validate a shared ledger state despite delays, faults, or conflicting proposals.
Blockchain
NodeSoftware connected to a blockchain network that can relay data and, depending on its operating mode, validate blocks and transactions under that network's rules. Node capabilities, data retained, privacy, and trust assumptions vary by implementation.
Blockchain
Proof of Work (PoW)A consensus approach in which a candidate block must demonstrate hashing work below a network target before nodes can accept it if all other consensus rules are met. Its security, energy use, and attack costs are network- and time-specific.
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