> For the complete documentation index, see [llms.txt](https://docs-kasplex.gitbook.io/l2-network/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs-kasplex.gitbook.io/l2-network/introduction/what-is-kasplex-l2/based-rollup.md).

# Based Rollup

A Based Rollup is a Layer 2 scaling solution where the sequence of transactions is driven by Layer1 rather than by a system within Layer 2 or by centralized sequencers. This model ensures maximum decentralization, economic alignment with L1, and strong censorship resistance.

**How It Works on Kasplex**:

* **L1-Driven Sequencing**: Layer 2 transactions are first submitted to Layer 1 and then ordered by Kaspa miners. These transactions consistently adhere to the sequence defined by Kaspa's Virtual Selected Parent Chain, ensuring full alignment with Layer 1’s consensus mechanism.
* **L2 Execution with zkproof**: L2 exclusively executes transactions sequenced by L1, initiating a status update along with a zero-knowledge proof.
* **No Extra Consensus Mechanism**: There is no separate sequencing layer, reducing complexity and ensuring simplicity.

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