> For the complete documentation index, see [llms.txt](https://hub.bsvblockchain.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hub.bsvblockchain.org/higher-learning/bsv-academy/bsv-network-topology/essentials-of-bsvs-mandala-network-architecture/difference-from-layer-2-solutions.md).
# Difference from Layer 2 Solutions
The Mandala architecture introduces a fundamentally different approach compared to other blockchains that implement layer-two scaling solutions. Many blockchains, such as Ethereum, utilize a two-layer system where the primary layer (layer one) is complemented by secondary layers (layer two) to enhance scalability. This approach, however, presents inherent challenges, particularly concerning the **double-spend problem**.
In traditional layer-two solutions, the risk of double-spending persists, as transactions are processed across multiple layers. This necessitates the grouping of transactions from layer two back to layer one, complicating the integrity of the blockchain.
In contrast, the Mandala architecture ensures that the majority of activity occurs within layer one, where all **UTXOs (Unspent Transaction Outputs)**, spending actions, and double-spend prevention mechanisms reside. The overlays and applications operate atop this foundational layer, ensuring that the **core security and integrity of the network remain intact.**
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