> For the complete documentation index, see [llms.txt](https://hub.bsvblockchain.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hub.bsvblockchain.org/higher-learning/bsv-academy/proof-of-work-the-only-viable-consensus-mechanism/pows-security-model/byzantine-fault-tolerance-in-practice.md).

# Byzantine Fault Tolerance in Practice

<figure><img src="/files/xwiW60ztHvfMaqQrJs6U" alt="" width="375"><figcaption></figcaption></figure>

Blockchain networks face the **Byzantine Generals Problem**: How do distributed parties reach consensus when some may act maliciously? PoW solves this through computational proof that is:

* **Expensive to produce** (requires significant energy and hardware investment)
* **Easy to verify** (other nodes can instantly check the solution)
* **Impossible to fake** (cryptographic properties ensure authenticity)

This creates **Byzantine Fault Tolerance**—the network maintains integrity even when malicious actors are present. Honest nodes naturally accumulate more computational work over time, making fraudulent histories mathematically infeasible to sustain.


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