Castro and Liskov: practical Byzantine fault tolerance

What changed

Presented and implemented an optimized Byzantine-fault-tolerant state-machine replication protocol with an NFS evaluation.

Scientific scope

The record is the exact two-author OSDI 1999 paper. Its safety, liveness and fault threshold depend on the stated model; the later proactive-recovery journal article and modern BFT protocols remain separate.

Evidence

The linked sources identify this contribution and its scope. WRS has not independently reconstructed the scientific claims. The record is the exact two-author OSDI 1999 paper. Its safety, liveness and fault threshold depend on the stated model; the later proactive-recovery journal article and modern BFT protocols remain separate.

Contributors

• Miguel Castro · SCIENCE: Named source author of the scoped work; individual effort shares are not measured.
• Barbara Liskov · SCIENCE: Named source author of the scoped work; individual effort shares are not measured.

• USENIX record for practical Byzantine fault tolerance

Provisional WRS assessment, edition 2026-10-16.1. Independent expert calibration is pending. This grade does not certify correctness or assign ownership.

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