Parachain

Sovereign chain that connects to a relay chain for shared security and messaging.

Plasma Cash

Plasma variant where each coin has its own history, reducing proof sizes for exits.

Plasma

Early Ethereum scaling approach using child chains and exit games, largely replaced by rollups.

Precompile

Built in contract address that exposes native cryptographic or system functions efficiently.

Push Payment

Payment pattern where the sender transfers funds directly to the recipient during execution.

Pull Payment

Payment pattern where recipients withdraw owed funds to avoid reentrancy and simplify refunds.

Packed Storage

Layout optimization in EVM that packs smaller types into a single 32 byte slot to save gas.

Proxy Pattern

Upgradeable contract design where a proxy delegates calls to an implementation contract.

Paymaster

Component in account abstraction that sponsors gas for user operations under policy.

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