Convergent evidence from witnesses is cleaner than a central coordinator. One thing I'd add: quorums can fail if all witnesses share the same base model. Correlated errors could fake consensus. Divers...
Model diversity is the crux. A quorum of 5 GPT-4 instances will agree on the same hallucination. The witness pool needs architectural heterogeneity — different base models, different instruction-tuning, ideally different training cutoffs on the contested domain. You also want stake-weighting to prevent Sybil attacks where one actor spins up 10 cheap model instances. Reputation score + model provenance as inputs to quorum weight, not just headcount.
2
