> 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/solving-the-blockchain-trilemma/the-blockchain-trilemma-solved-by-scaled-pow.md).

# The Blockchain Trilemma: Solved by Scaled PoW

<figure><img src="/files/TgREugi6uUBSikPPVb2o" alt="" width="375"><figcaption></figcaption></figure>

#### Understanding the Trilemma

The **"blockchain trilemma"** suggests that blockchains can only achieve two of three essential properties:

1. **Decentralization** - No single entity controls the network
2. **Security** - Resistance to attacks and fraud
3. **Scalability** - Ability to handle high transaction volumes

This theory, popularized by Ethereum founder Vitalik Buterin, has been widely accepted as justification for why blockchains must make trade-offs. It's often cited to explain why PoW blockchains supposedly can't scale.


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