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What Is Byzantine Fault Tolerance?

By Lyle Daly – Updated Oct 8, 2025 at 3:10AM

Key Points

  • Byzantine Fault Tolerance ensures crypto systems run despite some nodes failing or being deceptive.
  • It is critical for blockchains, helping them function even with sabotaged or faulty nodes.
  • Investors should note that different consensus algorithms incorporate Byzantine Fault Tolerance.
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