> For the complete documentation index, see [llms.txt](https://docs.entangle.fi/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.entangle.fi/entangle-interoperable-blockchain/overview.md).
# Overview
EIB is at the core of Entangle's ecosystem. Built on the Cosmos SDK and powered by the Ethermint framework, this highly customised Layer-1 blockchain is designed to function as a central hub, coordinating cross-chain message processing and transaction validation across networks. It employs Merkle tree structures for efficient and secure data storage and retrieval, ensuring data integrity and optimizing storage for high-volume cross-chain applications.
## Explore
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