Quipu proposes a governed bitemporal knowledge-graph store for agent-written facts

Quipu gates every write, tracks valid time and transaction time, and treats trust, policy and audit verdicts as governed facts. In author-designed tests it blocked six planted defects and re-derived 50 historical verdicts.

Why it matters and impact: The design directly addresses provenance, time travel and least-authority composition for agent memory. It is a single-author preprint with self-reported benchmarks, not a production database or independently reproduced result.