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 Reference implementation of the [Stacks blockchain](https://github.com/stacks-network/stacks) in Rust.
 
-Stacks is a layer-1 blockchain that connects to Bitcoin for security and enables decentralized apps and predictable smart contracts using the [Clarity language](https://clarity-lang.org/). Stacks implements [Proof of Transfer (PoX)](https://community.stacks.org/pox) mining that anchors to Bitcoin security. Leader election happens at the Bitcoin blockchain and Stacks (STX) miners write new blocks on the separate Stacks blockchain. With PoX there is no need to modify Bitcoin to enable smart contracts and decentralized apps.
+Stacks is a layer-2 blockchain that uses Bitcoin as a base layer for security and enables decentralized apps and predictable smart contracts using the [Clarity language](https://clarity-lang.org/). Stacks implements [Proof of Transfer (PoX)](https://community.stacks.org/pox) mining that anchors to Bitcoin security. Leader election happens at the Bitcoin blockchain and Stacks (STX) miners write new blocks on the separate Stacks blockchain. With PoX there is no need to modify Bitcoin to enable smart contracts and decentralized apps.
 
 [![License: GPL v3](https://img.shields.io/badge/License-GPLv3-blue.svg?style=flat)](https://www.gnu.org/licenses/gpl-3.0)
 [![Release](https://img.shields.io/github/v/release/stacks-network/stacks-blockchain?style=flat)](https://github.com/stacks-network/stacks-blockchain/releases/latest)