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  1. Home
  2. /Glossary
  3. /Soft Fork
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blockchain

Soft Fork

A backward-compatible upgrade to a blockchain where old nodes can still validate the new rules.

Definition

A backward-compatible upgrade to a blockchain where old nodes can still validate the new rules. Unlike a hard fork, it doesn't split the chain. Bitcoin's SegWit upgrade was a soft fork that improved transaction capacity without requiring everyone to upgrade immediately.

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Related Terms

Hard Fork

A permanent, backward-incompatible change to a blockchain's rules that creates a split.

Fork

A change to a blockchain's protocol that creates a new version.

Protocol

A set of rules governing how a network or application operates.

ABI

Application Binary Interface.

Account Abstraction

A way to make crypto wallets behave more like normal apps by turning every account into a smart contract.

ERC-4337

The Ethereum standard for account abstraction without changing the core protocol.

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