Marathon Digital Holdings, one of the most important companies in the Bitcoin mining industry, publicly unveiled Anduro, its new development. It is a new layer-two (second layer or L2) network that enables the creation of multiple sidechains in Bitcoin and pursues the goal of "accelerating the development and adoption" of the network.

In its statement, Marathon explains that "while Bitcoin's decentralization, security, and popularity are attractive to developers, the network's current functionality may present challenges for those looking to scale their applications."
Anduro aims to solve that difficulty, they explain, while continuing to take advantage of Bitcoin's security, based on its Proof of Work algorithm and fused mining with financial incentives for miners. In other words, Bitcoin miners could include Anduro transactions in their blocks and earn rewards in bitcoin (BTC).
The L2 launched by Marathon proposes to facilitate the creation of multiple sidechains. Sidechains have their own rules and features, but they are connected to the main chain (Bitcoin) and can exchange assets with it securely.