# What Is 'Finality' in a Blockchain Context like Ethereum? ⎊ Path

**Published:** 2025-12-04
**Author:** Greeks.live
**Categories:** Path

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## What Is ‘Finality’ in a Blockchain Context like Ethereum?

Finality refers to the guarantee that once a transaction is included in the blockchain, it cannot be reverted, altered, or canceled. In Proof-of-Stake systems, finality is achieved when a supermajority of validators attests to a block, making the cost of reversing the transaction economically prohibitive.

This is a critical security feature that ensures trust in the transaction history.

- [What Is the Concept of “Finality” in a Blockchain and How Does It Relate to Confirmation Speed?](https://learn.greeks.live/path/what-is-the-concept-of-finality-in-a-blockchain-and-how-does-it-relate-to-confirmation-speed/)

- [What Is ‘Finality’ in a Blockchain Context?](https://learn.greeks.live/path/what-is-finality-in-a-blockchain-context/)

- [What Is the ‘Finality’ Concept in Blockchain Consensus Mechanisms?](https://learn.greeks.live/path/what-is-the-finality-concept-in-blockchain-consensus-mechanisms/)

- [Define “Finality” in the Context of Blockchain Transactions](https://learn.greeks.live/path/define-finality-in-the-context-of-blockchain-transactions/)

- [What Is ‘Transaction Finality’ and How Does Double-Spending Affect It?](https://learn.greeks.live/path/what-is-transaction-finality-and-how-does-double-spending-affect-it/)

- [Can a Smart Contract Execution Be Reversed after Consensus Is Reached?](https://learn.greeks.live/path/can-a-smart-contract-execution-be-reversed-after-consensus-is-reached/)

- [Explain the Concept of “Finality” in a PoS Blockchain](https://learn.greeks.live/path/explain-the-concept-of-finality-in-a-pos-blockchain/)

- [How Does the Concept of ‘Finality’ Relate to Blockchain Security and the Risk of a 51% Attack?](https://learn.greeks.live/path/how-does-the-concept-of-finality-relate-to-blockchain-security-and-the-risk-of-a-51-attack/)

## Discover More

### [What Are the Key Differences between a Consortium Blockchain and a Private Blockchain in Financial Settlements?](https://learn.greeks.live/path/what-are-the-key-differences-between-a-consortium-blockchain-and-a-private-blockchain-in-financial-settlements/?utm_source=crypto.greeks.live&utm_medium=referral&utm_campaign=satellite)
![What Are the Key Differences between a Consortium Blockchain and a Private Blockchain in Financial Settlements?](https://learn.greeks.live/wp-content/uploads/2025/10/Ergonomic-Cryptocurrency-Wallet-Interface-and-On-Chain-Derivative-Execution-Stylus-Mechanism.webp)

A private blockchain has one owner; a consortium has multiple owners, decentralizing control over settlements.

### [What Is 'Finality' in the Context of a Blockchain Consensus Mechanism?](https://learn.greeks.live/path/what-is-finality-in-the-context-of-a-blockchain-consensus-mechanism/?utm_source=crypto.greeks.live&utm_medium=referral&utm_campaign=satellite)
![What Is 'Finality' in the Context of a Blockchain Consensus Mechanism?](https://learn.greeks.live/wp-content/uploads/2025/10/Teal-Encapsulation-of-Digital-Asset-Securitization-Mechanism-and-Option-Hedging-Exposure.webp)

Finality is the assurance that a confirmed transaction is irreversible; it is probabilistic in PoW and absolute in PoS.

### [How Does the Concept of 'Finality' Relate to Blockchain Security and the Risk of a 51% Attack?](https://learn.greeks.live/path/how-does-the-concept-of-finality-relate-to-blockchain-security-and-the-risk-of-a-51-attack/?utm_source=crypto.greeks.live&utm_medium=referral&utm_campaign=satellite)
![How Does the Concept of 'Finality' Relate to Blockchain Security and the Risk of a 51% Attack?](https://learn.greeks.live/wp-content/uploads/2025/10/Macro-Visualization-of-Hardware-Security-Module-Cryptographic-Key-Material-Securitization-Mechanism.webp)

Finality is the assurance that a confirmed transaction cannot be reversed; higher finality makes chain-rewriting attacks impossible.

### [How Does the Transition to Proof-of-Stake Affect MEV on the Ethereum Network?](https://learn.greeks.live/path/how-does-the-transition-to-proof-of-stake-affect-mev-on-the-ethereum-network/?utm_source=crypto.greeks.live&utm_medium=referral&utm_campaign=satellite)
![How Does the Transition to Proof-of-Stake Affect MEV on the Ethereum Network?](https://learn.greeks.live/wp-content/uploads/2025/10/Decentralized-Finance-Asset-Tokenization-Under-High-Frequency-Algorithmic-Trading-Apparatus.webp)

The PoS transition changed MEV to VEV, shifting the extraction power from competitive miners to block-proposing validators.

### [Is the Base58Check Algorithm Used in Ethereum Addresses?](https://learn.greeks.live/path/is-the-base58check-algorithm-used-in-ethereum-addresses/?utm_source=crypto.greeks.live&utm_medium=referral&utm_campaign=satellite)
![Is the Base58Check Algorithm Used in Ethereum Addresses?](https://learn.greeks.live/wp-content/uploads/2025/10/Abstract-Visualization-of-Quantized-Settlement-Layer-Edge-Case-Interaction-in-Decentralized-Finance-Protocols.webp)

No, Ethereum addresses use 40 hexadecimal characters with a "0x" prefix and a mixed-case checksum for integrity, not Base58Check.

### [How Does EIP-1559 Relate to Ethereum's Supply and Deflationary Mechanism?](https://learn.greeks.live/path/how-does-eip-1559-relate-to-ethereums-supply-and-deflationary-mechanism/?utm_source=crypto.greeks.live&utm_medium=referral&utm_campaign=satellite)
![How Does EIP-1559 Relate to Ethereum's Supply and Deflationary Mechanism?](https://learn.greeks.live/wp-content/uploads/2025/10/Decentralized-Finance-Collateralized-Crosshair-Structure-Representing-Volatility-Skew-and-Gamma-Exposure-Management.webp)

EIP-1559 burns the transaction base fee, making Ethereum's supply deflationary when the burn rate exceeds issuance.

### [What Is the Difference between Ethereum (ETH) and Ethereum Classic (ETC) in This Context?](https://learn.greeks.live/path/what-is-the-difference-between-ethereum-eth-and-ethereum-classic-etc-in-this-context/?utm_source=crypto.greeks.live&utm_medium=referral&utm_campaign=satellite)
![What Is the Difference between Ethereum (ETH) and Ethereum Classic (ETC) in This Context?](https://learn.greeks.live/wp-content/uploads/2025/10/Close-Up-Examination-of-Deconstructed-Digital-Asset-Collateralization-Mechanism-Spindle-Assembly.webp)

ETH is the chain that forked to reverse the attack; ETC is the original chain that upheld immutability.

### [Does Burning Guarantee a Net Deflationary State for Ethereum?](https://learn.greeks.live/path/does-burning-guarantee-a-net-deflationary-state-for-ethereum/?utm_source=crypto.greeks.live&utm_medium=referral&utm_campaign=satellite)
![Does Burning Guarantee a Net Deflationary State for Ethereum?](https://learn.greeks.live/wp-content/uploads/2025/10/Metallic-Device-Interface-Probing-Binary-State-Differential-Via-Actuation-Mechanism-in-High-Frequency-Trading.webp)

No, deflation only happens if the burned base fee amount exceeds the newly issued staking rewards in a given period.

### [What Is the Maximum Block Size or Gas Limit on Ethereum?](https://learn.greeks.live/path/what-is-the-maximum-block-size-or-gas-limit-on-ethereum/?utm_source=crypto.greeks.live&utm_medium=referral&utm_campaign=satellite)
![What Is the Maximum Block Size or Gas Limit on Ethereum?](https://learn.greeks.live/wp-content/uploads/2025/10/Lunar-Surface-Digital-Asset-Volatility-Surface-Intersected-by-Forward-Settlement-Strips.webp)

The target is 15 million gas, but the maximum gas limit can temporarily be pushed up to 30 million during high network demand.

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