Operation code. The basic instructions that the EVM executes when running a smart contract. Each opcode performs a specific action like adding numbers (ADD), storing data (SSTORE), or sending ETH (CALL). Each opcode costs a specific amount of gas. Gas optimization often means reducing expensive opcodes.
Ethereum Virtual Machine.
The fee paid to process transactions on Ethereum and similar blockchains.
The compiled, machine-readable version of a smart contract that runs on the blockchain's virtual machine.
Application Binary Interface.
A way to make crypto wallets behave more like normal apps by turning every account into a smart contract.
The Ethereum standard for account abstraction without changing the core protocol.
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