CS4 — Legal Filings & Contracts

Setting. Counterparties negotiate and amend contracts; provenance must survive across law firms and courts.

Design

EP per filing; OKB proves organizational control; m‑of‑n cosign; weekly BTC archival; receipts record amendments with invariants of totals/dates.

Policy Profile

BTC archival weekly; ETH daily; min_sigs=2; DAVS≥0.6 with court‑operated replica.

Workflow

Draft → EP → countersign → anchor → file with court → each amendment links to prior by receipt and invariants.

Evidence & Verification

Offline courts verify signatures and anchors; catalogs locate replicas; tombstones mark confidential annexes.

Cost & Operations

Batch by docket; low frequency BTC; ETH for daily rhythm.

Outcomes

Reduced dispute windows; clear authorship and timing without relying on mail servers or portals.

Risks & Mitigations

Loss of access → replicas and catalogs; revoked keys → as‑of semantics.

KPIs

All filings with EP; time‑to‑verify ≤ 150 ms; zero ambiguous DIDs in registry.