Blockchain
OP Stack
Also known as: Optimism OP Stack
The open-source modular software stack that powers Optimism and Base, defining how an Ethereum Layer 2 rollup is built.
The OP Stack is the open-source codebase that defines how to build an Ethereum Layer 2 rollup in the Optimism family. It's modular: node software (op-node), execution engine (op-geth), rollup batcher (op-batcher), and proposer (op-proposer) are separate components that can be swapped or extended.
Both Optimism Mainnet and Base run the OP Stack. So does a growing set of "Superchain" L2s — Zora, Mode, Redstone, and others — that share the same security model and can interoperate natively.
For LearnCoin, the OP Stack is an implementation detail of Base. What matters is the settlement guarantee: OP Stack chains commit transaction batches to Ethereum L1, and the fraud-proof window means any incorrect state can be challenged and reverted. That's the trust chain LearnCoin's credential anchors inherit.
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