B² Network is a project aimed at scaling Bitcoin (BTC) using a multi-layer architecture that includes an L2 solution, a DA (Data Availability) layer, and mining products that allow users to earn BTC. Let's break down each component in detail:

---

1. L2 (Layer 2) for Bitcoin

Problem: Bitcoin as L1 (base layer) has limited throughput (~7 transactions per second) and high fees under load.

Solution: B² Network implements L2 (layer two) — a technology that processes transactions off the Bitcoin blockchain but ensures their security and finality through the main chain.

- Examples of L2 technologies: Rollups (optimistic or zk), sidechains, state channels.

- How it works: Users transfer BTC to L2, where transactions are executed quickly and cheaply, and then the results are "anchored" in L1 Bitcoin for security.

---

2. DA Layer (Data Availability)

Problem: To operate L2 (especially Rollups), it is necessary to ensure that transaction data is available for verification; otherwise, fraudulent actions are possible.

Solution: B² Network uses a separate DA layer that stores and provides access to L2 transaction data.

- Implementation options:

- Dedicated DA chain (for example, based on Celestia or EigenDA).

- Storing data in Bitcoin (via OP_RETURN or similar methods, but with limitations).

- Hybrid solutions (for example, hashing data in Bitcoin, complete data in a separate network).

---

3. Products for BTC mining

Problem: Bitcoin mining requires expensive equipment (ASIC) and high energy costs, making it inaccessible to ordinary users.

Solution: B² Network offers alternative ways to participate in mining or earn BTC:

- Cloud mining: Renting power from the network.

- Staking/contribution in L2: Users lock their assets (for example, B² tokens) and receive rewards in BTC.

- Participation in nodes: Running L2 or DA nodes with rewards in bitcoins.

---

Conclusion

B² Network creates an ecosystem that:

1. Accelerates and reduces the cost of Bitcoin transactions through L2.

2. Ensures data security through the DA layer.

3. Allows users to earn BTC without traditional mining.

This expands the functionality of Bitcoin while maintaining its decentralization and security.