Cognition-OS/docs/rfcs/RFC-0009-Event-Ledger-Primitive.md

RFC-0009: Event Ledger Primitive

Status: Draft | Updated: 2026-02-17

Properties

• Append-only
• Hash-chained per stream
• Schema-validated
• Tamper-evident
• Supports proof construction for policy enforcement

Envelope

Each event includes: id, ts, stream_id, type, body, prev_hash, hash.