Bitcoin's second-layer scalability solution, Fractal Bitcoin, has significantly improved network security by partnering with one of the largest cryptocurrency mining pools.

Fractal Bitcoin (FB), a layer 2 solution for the Bitcoin (BTC) network, has recently achieved a major security success. On Thursday, April 24, the project managed to gain support from Foundry, one of the leading Bitcoin mining pools, to begin mining FB.

🔓 Major milestone reached: @FoundryServices now enables merged mining of Fractal using our innovative Cadence Mining technology.

✅ >719 EH/s is now Fractal merged mining
✅ Increased network security thanks to merged mining of 93% of Bitcoin hashrate
✅ Support for miners without the need for new hardware pic.twitter.com/kPefEZ8Lyl

— Fractal Bitcoin (@fractal_bitcoin) April 24, 2025

Thanks to the integration with Foundry, Fractal Bitcoin now has 93% of the Bitcoin hashrate. This means that 93% of the computing power used to mine Bitcoin is now also used to mine Fractal Bitcoin. According to the project, this makes it the most secure Bitcoin-compatible network.

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This is in line with the company's goals to leverage the security of Bitcoin while maintaining the scalability needed to support complex DeFi applications.

How Fractal Bitcoin Convinced Miners to Join

Most crypto miners split their resources between multiple chains, such as Bitcoin, Litecoin, Doge, or Monero. This is despite the fact that mining on each network usually requires separate computing and energy resources. However, depending on the token prices and mining difficulty, it is profitable to split the resources.

Fractal and Bitcoin use the same hashing algorithm, SHA-256. Notably, networks using the same algorithm support merged mining. This means that miners can secure both networks at the same time using the same computing power that they would use to secure only one chain.

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For this reason, Fractal Bitcoin is able to easily attract Bitcoin miners, who can earn additional rewards without significant costs. However, Bitcoin miners do not receive all the rewards, as Fractal Bitcoin uses the Cadence Mining model.

This model splits block rewards between merged and permissionless mining, with one-third of the rewards going to Bitcoin miners. The remaining two-thirds go to those with the right hardware. This broadens access, as potential miners don’t have to rely on expensive BTC mining infrastructure.

Read more: Bitcoin Mining in 2025: How to Maximize Profits with Cost-Effective Cloud Mining

Source: cryptonews.net