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RBF

Definition

Replace-By-Fee — a Bitcoin feature allowing an unconfirmed transaction to be replaced with a new version paying a higher fee. Useful for speeding up stuck transactions during high-fee periods.

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Difficulty

Advanced

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Category

Mining & Consensus

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See Also

8 related

◆ Key Takeaways

1

Replace-By-Fee — a Bitcoin feature allowing an unconfirmed transaction to be replaced with a new version paying a higher fee.

2

Useful for speeding up stuck transactions during high-fee periods.

Why It Matters

This mining concept is essential for understanding how proof-of-work blockchains secure transactions and create new coins. Important for miners evaluating profitability and hardware decisions.

Related Terms in Mining & Consensus

The process of using computational power to validate transactions, create new blocks, and earn cryptocurrency rewards on proof-of-work blockchains. Bitcoin mining uses specialized ASIC hardware consuming significant energy.

A participant or machine that performs mining computations to validate blockchain transactions and earn block rewards. Miners invest in hardware and electricity costs in exchange for newly created cryptocurrency.

A group of miners combining computational resources to increase their chances of finding blocks and sharing rewards proportionally. Pools provide more consistent income than solo mining for individual participants.

Mining independently without joining a pool. Offers full block rewards but with very inconsistent income — may go weeks or months without finding a block. Only viable with substantial hash rate.

Renting mining hardware and capacity from a remote data center. Users pay for hash rate without managing physical equipment. High scam risk — many cloud mining services have been fraudulent.

Application-Specific Integrated Circuit — specialized hardware designed exclusively for cryptocurrency mining. Bitcoin ASICs are millions of times more efficient than general-purpose computers for SHA-256 mining.

Using graphics processing units to mine cryptocurrencies. GPUs are versatile, mining multiple algorithms. Ethereum was primarily GPU-mined before switching to PoS. Still used for other PoW coins.

Mining cryptocurrency with standard computer processors. Viable only for CPU-friendly algorithms like RandomX (Monero). Impractical for Bitcoin or most other PoW chains due to ASIC/GPU efficiency advantages.

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