CUSTODY BY LUNAR RAILS / KNOWLEDGE BASE
Institutional-grade custody,
transparency based.
Custody is a zero trust custody solution for digital assets. These docs are for any audience that needs to understand how custody works under the hood.
Read the architecture overview →v0.0.1 · April 2026
Start here
01 — ORIENTATION
01
Introduction
What Custody is, the threat model it assumes, and where it fits in a digital-asset stack.
Read introduction →
02
Architecture overview
Signing layer, policy engine, key-management subsystem and how they interact.
View diagram →
03
Cryptography
Why DKLS23 for threshold ECDSA, and what the protocol does and does not give us.
Read primer →
04
Key management
MPC-backed key lifecycle: generation, refresh, reshare, decommission.
Learn key model →
05
Policy engine
Declarative rules for approvals, velocity limits, allow-lists and quorum.
Policy reference →
06
Compliance
Compliance posture and attestations.
View attestations →
02 — BY TOPIC
Go deep on the surfaces that matter.
Each topic is a self-contained track. Read in order, or jump to the section that maps to your integration.