Glossary

Terms used across the Blockops documentation.

Here’s a blockchain lingo guide to help you navigate the exciting frontier of Web3.

Application

A decentralized application is a program running on a distributed ledger system.

Network

The actual blockchain network that comprises nodes.

Node

Any computer connected to other computers as part of the network protocol. Nodes comprise a network.

Project

A project organizes your blockchain networks and nodes.

Rollup terms

Term	Definition
OP Stack	Optimism’s open-source software stack for building L2 blockchains
Settlement Layer	L1 blockchain (Ethereum) where rollup state is finalized
Data Availability (DA)	Guarantee that transaction data is available for verification
Sequencer	Component that orders and executes L2 transactions
Prover	System that generates cryptographic proofs of L2 state
Fault Proof	Mechanism allowing challenges to invalid state transitions
Genesis	Initial state of the blockchain at block 0
Chain ID	Unique numeric identifier for a blockchain network
RPC	Remote Procedure Call - endpoint for blockchain interactions
Blob (EIP-4844)	Temporary data storage on Ethereum for L2 data availability